JP5324271B2 - Numerical value setter and inverter device - Google Patents

Description

  The present invention relates to a numerical value setter for setting a frequency and a parameter value, and an inverter device provided with the numerical value setter.

  Conventionally, devices that can be set with operating conditions, such as inverter devices and measuring instruments, display operation means for changing various parameters that set the operating conditions, and numerical values corresponding to the parameters. And a numerical display for the purpose. (For example, see Patent Documents 1 to 3). Some of these parameters have a wide range of numerical values that can be set. For example, the operation frequency command value in the inverter device can be set in units of 0.1 Hz in a range extending from several hundred Hz to several thousand Hz.

  When setting a parameter having such a wide settable range to a desired target set value, if the current set value and the target set value are greatly different, many operations are required for the setting. That is, if the operation means is a push switch, it is necessary to push the switch many times. Further, if the operating means is a rotary operating device, the rotating operating device has to be rotated many times, and such an operation requires a great deal of labor and time.

  As a countermeasure for this, for example, Patent Document 2 discloses a technique for moving a digit to be changed according to the rotation speed of a rotary operation device. Patent Document 3 discloses a technique for changing a numerical increase / decrease amount based on a change amount per unit time of a pulse generated in response to an operation of a rotary operation device. According to these techniques, even when the difference between the current set value and the target set value is large, it is possible to set the target set value with a small operation amount.

Japanese Patent Laid-Open No. 9-247948 JP-A-9-062345 Japanese Patent No. 3783625

  However, the techniques described in Patent Documents 2 and 3 all reduce the operation amount based on the rotation speed of the rotary operation device. For this reason, there is a problem that it is difficult for a user who is difficult to quickly rotate the rotary operation device.

  The present invention has been made in view of the above circumstances, and its purpose is to set numerical values that can improve the operability of operations for setting even when the frequency and parameter values can be set in a wide range. And an inverter device including the numerical value setting device.

In order to achieve the above-described object, the numerical value setting device of the present invention is a numerical value setting device for setting a frequency and a parameter value, and a numerical value display for displaying a numerical value of a plurality of digits corresponding to the frequency and the parameter value. An operation means configured to enable a rotation operation and a pressing operation in the rotation axis direction of the rotation operation, and sets the frequency and the parameter value according to the operation of the operation means, and displays the numerical value display And a controller that controls the numerical value corresponding to the frequency and the parameter value according to the rotation operation based on a predetermined magnification, and the numerical indicator And the magnification is changed according to a magnification change operation including the rotation operation and the pressing operation.
According to the means described in claim 1, the control unit determines that the magnification changing operation is performed when the rotating operation is performed in a state where the pressing operation is performed, and The rotation operation performed from the start time to the time after a predetermined time has elapsed is ignored. According to the means described in claim 2, the control unit determines that the magnification change operation is performed when the rotation operation is performed after the pressing operation is performed, and the start time of the pressing operation is determined. The rotation operation performed until a time after a predetermined time elapses is ignored.

  If comprised in this way, the magnification change operation including the rotation operation and press operation of an operation means will be performed, and the magnification of the increase / decrease value at the time of increasing / decreasing the numerical value corresponding to a frequency and a parameter value will be changed. Even when the frequency and parameter values can be set in a wide range, if the magnification is changed and the increase / decrease value is adjusted as described above, the rotational operation amount of the operating means is not required without requiring a quick rotational operation. Each numerical value can be set to a desired target value without increasing it.

  According to the present invention, each numerical value is set to a desired target value without requiring a quick rotation operation and a rotation operation with a small operation amount even when the frequency and parameter values can be set in a wide range. Therefore, the operability of the operation for setting the frequency and the parameter value can be improved.

The electrical block diagram of the inverter apparatus which shows the 1st Embodiment of this invention External view schematically showing front configuration of inverter device It is a figure which shows a pulse signal and a switch state signal, and is a figure which shows an example judged that short press operation was made | formed FIG. 3 equivalent diagram showing an example in which it is determined that a long press operation has been performed. FIG. 3 equivalent view showing an example in which it is determined that there is no pressing operation FIG. 3 equivalent view showing an example in which it is determined that a rotation operation has been performed. FIG. 3 equivalent view showing a first example in which it is determined that a rotation operation has been performed while pressing. FIG. 3 equivalent diagram showing a second example in which it is determined that a rotation operation has been performed while pressing. State transition diagram showing each monitor mode State transition diagram showing each state in standard monitor mode State transition diagram showing each state in the setting monitor mode Figure showing the numerical value setting procedure when digit shift is not performed FIG. 12 equivalent diagram when digit shift is performed FIG. 10 equivalent view showing the second embodiment of the present invention FIG. 3 equivalent diagram showing an example in which it is determined that a short press operation is performed during the rotation operation. FIG. 3 equivalent diagram showing an example in which it is determined that a long press operation is performed during the rotation operation. FIG. 10 equivalent view showing the third embodiment of the present invention

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
FIG. 2 is an external view schematically showing a front configuration of the inverter device. As shown in FIG. 2, a display unit 4 including a numerical indicator 2 and a display lamp group 3 and an operation unit 7 including an operation knob 5 and an operation key group 6 are provided on the front surface of the inverter device 1. .

  The numerical display 2 has a configuration in which four 7-segment LEDs (with a decimal point) are provided, and can display 4-digit alphanumeric characters. The display lamp group 3 includes a% lamp 3a, a Hz lamp 3b, a RUN lamp 3c, a PRG lamp 3d, and a MON lamp 3e, all of which are constituted by LEDs. The% lamp 3a and the Hz lamp 3b are provided for displaying the unit of the numerical value displayed on the numerical indicator 2. The RUN lamp 3c, the PRG lamp 3d, and the MON lamp 3e are provided to display the operation state, the operation mode, and the like of the inverter device 1.

  The operation knob 5 (corresponding to the operation means) is configured to be rotatable, and is configured to be able to be pressed in the direction of the rotation axis and toward the housing 8 of the inverter device 1. With such a configuration, it is possible to perform a pressing operation (a short pressing operation and a long pressing operation described later), a rotating operation, and a rotating operation while pressing the operating knob 5. The operation key group 6 includes a LOCREM key 6a, a RUN key 6b, a MODE key 6c, and a STOP key 6d, all of which are constituted by push switches.

  FIG. 1 schematically shows an electrical configuration relating to a control unit of the inverter device 1. However, in FIG. 1, a main circuit unit including a converter unit configured by bridge-connecting diodes and an inverter unit configured by bridge-connecting switching elements is not illustrated. The control unit 9 is mainly composed of a microcomputer including a CPU, a ROM, a RAM, and the like.

  A pulse generator 10, a push switch 11, an operation key group 6, a numerical display 2 and a display lamp group 3 are connected to the control unit 9. The pulse generator 10 is, for example, an incremental rotary encoder. The rotation shaft of the pulse generator 10 is rotated in conjunction with the rotation of the operation knob 5. Therefore, the pulse generator 10 generates a two-phase pulse signal corresponding to the rotation amount and the rotation direction of the operation knob 5. The pressing switch 11 is a normally open switch that performs a momentary operation, for example, and is turned on in accordance with the pressing operation of the operation knob 5. The pulse generator 10 may be of another type such as an absolute type rotary encoder. The pressing switch 11 may be a normally closed switch that performs a momentary operation.

  A pulse signal output from the pulse generator 10 and a signal indicating the operation state of the push switch 11 and the operation key group 6 are given to the control unit 9. The control unit 9 detects an operation on the operation knob 5 and the operation key group 6 based on the signals given from the operation unit 7, sets operation conditions such as frequency and parameter numerical values, and sets the operation conditions. Based on the above, the control of the inverter unit and the like described above is executed. The control unit 9 also performs control such as displaying the set operating conditions and the inverter unit and, consequently, the operating state of the load, on the display unit 4 including the numerical indicator 2 and the display lamp group 3. In the present embodiment, the numerical value setting unit 12 is configured by the display unit 4, the operation unit 7, the pulse generator 10, and the push switch 11 described above.

  Next, a determination method for detecting each operation state (short press operation, long press operation, rotation operation, rotation operation while pressing) on the operation knob 5 in the control unit 9 will be described with reference to FIGS. 3 to 8 show a pulse signal output from the pulse generator 10 and a switch state signal whose level changes according to the opening and closing of the push switch 11. This pulse signal represents one of the two-phase pulse signals generated by the pulse generator 10. The switch state signal is L level when the push switch 11 is off, and is H level when the push switch 11 is on. The control unit 9 determines each operation state with respect to the operation knob 5 based on the pulse signal and the switch state signal as follows (1) to (3).

(1) Determination of pressing operation When the control unit 9 has a time from when the operation knob 5 is pressed (time t1) to when it is released (time t2) is equal to or longer than the predetermined time T1 and less than the predetermined time T2. It is determined that a short press operation has been performed (see FIG. 3). Further, when a predetermined time T2 or more has elapsed since the time when the operation knob 5 was pressed (time t1), it is determined that a long press operation has been performed (see FIG. 4). If the time from when the operation knob 5 is pressed (time t2) to when it is released (time t3) is less than the predetermined time T1, it is determined that no pressing operation has been performed (see FIG. 5). In the present embodiment, the predetermined time T1 is set to 0.03 seconds and the predetermined time T2 is set to 0.5 seconds, but these values can be appropriately changed.

  When the user performs a pressing operation on the operation knob 5, when the operation knob 5 starts to be pressed or when the operation knob 5 is released after being pressed, the operation knob 5 may slightly change depending on the operation state, for example, the pressing angle. There are cases where it will rotate. In the present embodiment, such a rotation is not regarded as a rotation operation, but is simply determined as a pressing operation.

  That is, when the operation knob 5 starts to be pushed slightly, a pulse signal is generated from time t1 when the switch state signal changes from L level to H level (see FIGS. 3 to 5). Since this pulse signal is generated instantaneously by a slight rotation of the operation knob 5, its generation time is short. Therefore, the control unit 9 of the present embodiment assumes that the operation knob 5 has been rotated even if a pulse signal is generated from the time t1 when the pressing operation starts until the predetermined time T1 elapses. Does not judge.

  Further, when the operation knob 5 is released slightly when it is released, a pulse signal is generated from time t2 when the switch state signal changes from H level to L level (see FIG. 3). Since this pulse signal is also generated instantaneously by a slight rotation of the operation knob 5, its generation time is short. Therefore, even when a pulse signal is generated from the time t2, which is the end point of the pressing operation, until the predetermined time T1 has elapsed, the control unit 9 according to the present embodiment is similar to when the operation knob 5 is started to be pressed. It is not determined that the operation knob 5 has been rotated. As described above, the control unit 9 detects the pulse signal generated between the time when the operation knob 5 is pressed and the predetermined time T1 elapses and between the time when the operation knob 5 is released and the predetermined time T1 elapses. Is ignored regardless of the number of pulses.

(2) Determination of Rotation Operation The control unit 9 determines that the rotation operation for the operation knob 5 has been performed once every time two pulse signals are generated. For example, in the case of FIG. 6, it is determined that six rotation operations have been performed. In addition, when the user performs a rotation operation on the operation knob 5, the operation knob 5 may be accidentally pressed depending on the operation state, for example, addition or subtraction of force. In the present embodiment, such pressing is not regarded as a pressing operation, but is simply determined as a rotating operation.

  That is, when the operation knob 5 is pressed while rotating, the switch state signal changes from the L level to the H level (see FIG. 6). Since the change of the switch state signal is due to the momentary pressing of the operation knob 5, the time of the H level is extremely short. Therefore, the control unit 9 of the present embodiment does not determine that the pressing operation has been performed on the operation knob 5 even if the switch state signal becomes H level for a time shorter than the predetermined time T1.

(3) Judgment of rotation operation while pushing The control unit 9 judges that the rotation operation is performed once while pushing the operation knob 5 every time two pulse signals are generated while the switch state signal is at the H level. (See FIGS. 7 and 8). FIG. 7 shows a case where, after the pressing operation, the rotating operation is performed while maintaining the pressing state. FIG. 8 shows a case where the pressing operation is performed during the rotating operation, and the rotating operation is continued while the pressed state is maintained.

  However, also in these cases, the control unit 9 ignores the pulse signal generated between the time when the operation knob 5 is pressed and the predetermined time T1 elapses as described above. For example, in the case of FIG. 7, the 4 pulses generated until the predetermined time T1 elapses from when the operation knob 5 is pressed are ignored, and only the 8 pulses generated thereafter are detected. In the case of FIG. 8, two pulses generated until the predetermined time T1 elapses after the operation knob 5 is pressed are ignored, and only the 8 pulses generated thereafter are detected. Therefore, in both cases of FIGS. 7 and 8, the control unit 9 determines that the rotation operation has been performed four times while being pressed against the operation knob 5.

In FIG. 7, the reason why the pulse width is different between the first 4 pulses and the subsequent 8 pulses is as follows. That is, since the pulse width of the pulse signal depends on the rotation speed of the operation knob 5, the pulse width is narrow when the rotation speed is high. For this reason, in FIG. 7, the pulse width of the pulse signal instantaneously generated unintentionally immediately after the pressing switch 11 is pressed is narrower than the pulse width of the pulse signal generated thereafter.
The number of pulses for determining that the rotation operation (or the rotation operation while pressing) on the operation knob 5 is not limited to the above-described two pulses, and may be, for example, one pulse or three pulses or more. .

  The control unit 9 has the following three monitor modes, and the parameters that can be set for each monitor mode and the contents displayed on the display unit 4 are changed. That is, in the standard monitor mode, the operation frequency command value (corresponding to the frequency) of the inverter device 1 can be set by operating the operation unit 7, and the numerical value or the like is displayed on the display unit 4. In the setting monitor mode, various parameter values for setting the operating conditions of the inverter device 1 and the like can be set by operating the operation unit 7, and the item names and numerical values are displayed on the display unit 4. In the state monitor mode, the operation state (input / output voltage value, load current value, etc.) of the inverter device 1 is displayed on the display unit 4.

  FIG. 9 is a state transition diagram showing three monitor modes. As shown in FIG. 9, each monitor mode is shifted to the standard monitor mode, the setting monitor mode, and the state monitor mode every time the MODE key 6c is operated. Of the three monitor modes, the standard monitor mode and the setting monitor mode include a numerical value change mode for changing the operation frequency command value or various parameter values, and a digit movement mode for moving the digit of the changeable numerical value. .

FIG. 10 is a state transition diagram during the standard monitor mode. If it shifts to standard monitor mode, it will be in the numerical display state which displays the numerical value of the operating frequency of the inverter apparatus 1 on the numerical indicator 2 (operating frequency display). Here, when a rotation operation or a short press operation is performed, the mode changes to a numerical value change mode.
In the numerical value change mode, the numerical value of the digit to be changed among the multiple digits corresponding to the operation frequency command value is increased or decreased according to the number of rotation operations. Specifically, each time a clockwise rotation operation is performed, the value of the change target digit is incremented by one, and each time a counterclockwise rotation operation is performed, the value of the change target digit is decreased by one. To do. It should be noted that the lowest digit is the digit to be changed at this stage of shifting from the numerical value display state to the numerical value change mode. If a short press operation is performed during this numerical value change mode, the operating frequency command value is determined (set) and the numerical value display state is restored.

  In addition, when a long press operation or a rotation operation is performed while pressing during this numerical value change mode, the mode shifts to the digit movement mode. The mode transition condition may be changed only to a rotation operation while being pressed. In this digit movement mode, the digit to be changed in the numerical value change mode is changed according to the number of rotation operations while being pressed. Specifically, each time a rotation operation is performed while being rotated clockwise, the digit to be changed is moved to the right by one, and every time a rotation operation is performed while being counterclockwise pressed, Moves one digit to the left. When the pressing state of the operation knob 5 is released during the digit movement mode, the value change mode is restored. At the stage of shifting from the digit movement mode to the numerical value change mode, the numerical value of the digit to be changed set in the digit movement mode is increased or decreased according to the number of rotation operations.

  In the numerical value change mode, each digit is sequentially changed from 0 to 9. That is, in this embodiment, when the first digit after the decimal point is a change target, the operation frequency command value is increased or decreased by 0.1 Hz each time the rotation operation is performed once. Similarly, if the 1st digit is to be changed, increase / decrease by 1Hz, if the 10th digit is to be changed, increase / decrease by 10Hz, and the 1st digit is to be changed Is increased or decreased by 100 Hz. In the numerical value change mode, the carry and carry of the digit are automatically performed. For this reason, it can be said that the digit movement mode is a mode for setting a magnification for an increase / decrease value of a numerical value that is changed according to the number of rotation operations in the numerical value changing mode. Therefore, in this embodiment, “rotating operation while pressing” in the digit movement mode corresponds to a magnification changing operation.

  The control unit 9 blinks the numerical value of the digit to be changed and displays the numerical values of the other digits on the numerical value displayed on the numerical value display 2 during the numerical value changing mode and the digit moving mode. That is, the control unit 9 makes the display state of the numerical value of the digit to be changed different from the display state of the numerical value of the other digits. The display state control method can be changed as appropriate. For example, the numerical value of the digit to be changed may be lit up and the numerical values of other digits may be flashed. In addition, either the numerical value of the digit to be changed or the numerical value of another digit may be displayed with high brightness. Furthermore, the distinction based on the lighting state and the distinction based on the luminance level may be combined.

  The controller 9 blinks and displays both the% lamp 3a and the Hz lamp 3b during the digit movement mode. That is, the% lamp 3a and the Hz lamp 3b also function as operation state notifying means. In this embodiment, after the digit to be changed is set in the digit movement mode, if the operation on the operation knob 5 is not performed for a predetermined time (for example, 5 minutes), the digit to be changed is the smallest digit. It returns to the first digit after a certain decimal point.

  FIG. 11 is a state transition diagram during the setting monitor mode. When the setting monitor mode is entered, the parameter name display state in which the parameter name of one of the various parameters (for example, “ACC” for acceleration time) is displayed on the numerical display 2 is set (parameter selection). The parameter displayed at this time can be changed according to the rotation operation. Here, when a short press operation is performed, the mode shifts to a numerical value change mode in which the numerical value of the parameter displayed at that time can be changed. The operations in the numerical value change mode and the digit movement mode are the same as those in the standard monitor mode described above, and the numerical value of the parameter can be changed and the digit to be changed can be moved.

Next, the operation of the above configuration will be described with reference to FIGS.
FIG. 12 shows an example of a procedure for changing the setting of the operation frequency command value without moving the digit to be changed. Here, it is assumed that the operation frequency command value is changed from 30.0 Hz to 50.0 Hz while the operation of the inverter device 1 is stopped. First, when the MODE key 6c is operated to shift to the standard monitor mode, the numerical value display 2 displays the numerical value of the operating frequency of the inverter device 1 and the Hz lamp 3b is lit (FIG. 12 ( a)). In this case, since the operation of the inverter device 1 is stopped, the numerical value of the operation frequency is “0.0”.

  Here, when a short press operation or a rotation operation is performed, the mode changes to a numerical value change mode. Then, the current operation frequency command value (30.0) is displayed on the numerical display 2 (FIG. 12B). At this time, the numerical value of the first digit after the decimal point of the digit to be changed is displayed blinking, and the numerical values of the other digits (first digit, tenth digit) are lit and displayed.

  When the counterclockwise (CCW) rotation operation is performed once in the state of FIG. 12B, the operation frequency command value is decreased by 0.1 and changed to 29.9 (FIG. 12C). ). When the clockwise (CW) rotation operation is performed once, the operation frequency command value is increased by 0.1 and changed to 30.1 (FIG. 12D). In this case, the operation frequency command value is changed to the target value of 50.0 by performing the clockwise rotation operation 200 times (FIG. 12 (e)).

  When the operation frequency command value is adjusted to the target value in this way and then a short press operation is performed, the operation frequency command value is determined (set), and the value is written in the memory of the control unit 9. At this time, “50.0” that is the set operation frequency command value and “FC” that is the item name indicating the operation frequency command value are alternately flashed and displayed on the numerical display 2 (FIG. 12 ( f)). Thereafter, when the writing operation is completed, the state returns to the numerical value display state (FIG. 12A).

FIG. 13 shows an example of a procedure when changing the setting of the operation frequency command value by moving the digit to be changed. Here, similarly to FIG. 12, it is assumed that the operation frequency command value is changed from 30.0 Hz to 50.0 Hz. First, when the mode is shifted to the standard monitor mode by operating the MODE key 6c, the numerical value display 2 displays the numerical value (0.0) of the operating frequency of the inverter device 1 and the Hz lamp 3b is lit. (FIG. 13A). Here, when a short press operation or a rotation operation is performed, the mode shifts to the numerical value change mode shown in FIG.
In this numerical value changing mode, when a long pressing operation or a rotating operation is performed while pressing, the digit shift mode is entered. When the digit shift mode is entered, both the% lamp 3a and the Hz lamp 3b are displayed blinking (FIG. 13B).

  In the state of FIG. 13B, when the rotation operation is performed once while pushing counterclockwise, the digit to be changed is moved one place to the left and changed to the first place (FIG. 13C). . In the state of FIG. 13 (c), when the rotation operation is performed once while rotating clockwise, the digit to be changed moves to the right by one and returns to the first digit after the decimal point (FIG. 13 (b)). ). Further, in the state of FIG. 13C, when the rotation operation is performed once while pushing counterclockwise, the change target digit is further moved to the left and changed to the tens place (FIG. 13D). )). At this time, only the numerical value of the change target digit is displayed blinking. In addition, when it shifts to the digit movement mode by performing the rotation operation while pushing, the digit to be changed is moved according to the number of the rotation operations simultaneously with the mode shift.

  In such a digit movement mode, when the pressing state of the operation knob 5 is released, the digit to be changed is determined (set) and the numerical value change mode is restored (FIG. 13E). In this case, since the digit to be changed is returned to the numerical value changing mode in a state where the change target digit is set to the tens place, only the tens place numerical value is blinked. When returning to the numerical value change mode, the% lamp 3a is turned off and the Hz lamp 3b is turned on.

  In the state of FIG. 13E, when the counterclockwise rotation operation is performed once, the operation frequency command value is decreased by 10 and changed to 20.0 (FIG. 13F). When the clockwise rotation operation is performed once, the operation frequency command value is increased by 10 and changed to 40.0 (FIG. 13 (g)). In this case, when the clockwise rotation operation is performed twice, the operation frequency command value is changed to the target value of 50.0 (FIG. 13 (h)). If the operation frequency command value is adjusted to the target value in this way and then a short press operation is performed, the operation frequency command value is determined in the same manner as in FIG. 12 (FIG. 13 (i)), and then a numerical value is displayed. Return to the state (FIG. 13A). As shown in FIG. 13, by using the digit shift mode, the operation related to the setting change of the operation frequency command value is greatly reduced as compared with the case of not using the digit shift mode as shown in FIG.

As described above, according to the present embodiment, the following effects can be obtained.
In the numerical value change mode for setting the operation frequency command value or various parameter values, the digit to be changed is changed by rotating while pressing. Even if the settable range of the operating frequency command value or parameter value is wide, if the digit to be changed is changed and the increase / decrease amount of the value is adjusted as described above, a quick rotation operation is required. Since each numerical value can be set to a desired target value without rotation and with a small operation amount, the operability of the operation relating to the setting of the operation frequency command value and the parameter value can be improved. In addition, since the numerical increase / decrease amount can be adjusted in this way, the operation frequency command value and the parameter value can be changed from a large change to a fine adjustment.

  The operation knob 5 is configured to be rotatable and configured to be able to be pressed in the direction of the rotation axis, and a pulse generator 10 that generates a pulse signal corresponding to the rotation of the operation knob 5, and a press switch that is turned on when the operation knob 5 is pressed. 11, and the control unit 9 detects a pressing operation, a rotating operation, and a rotating operation while pressing the operating knob 5 based on output signals from the pulse generator 10 and the pressing switch 11. The control unit 9 controls setting of numerical values and digit movement according to the detected operation states of the operation knob 5. According to such a configuration, the user can perform numerical value setting, digit movement, and the like without moving the finger almost from the operation knob 5, so that the operability is further improved.

  The control unit 9 performs pulse processing on pulse signals generated between the time when the operation knob 5 is pressed and the predetermined time T1 elapses and between the time when the operation knob 5 is released and the predetermined time T1 elapses. Ignore regardless of the number. Accordingly, when the user performs a pressing operation on the operation knob 5, when the operation knob 5 starts to be pushed or when the operation knob 5 is released after being pushed, even if the operation knob 5 is erroneously rotated depending on the operation state, It can be determined that the operation is a pressing operation, and erroneous determination that a rotation operation (magnification changing operation) has been performed while pressing can be prevented.

  The control unit 9 does not determine that the pressing operation has been performed on the operation knob 5 even if the switch state signal becomes H level for a time shorter than the predetermined time T1. Accordingly, when the user performs a rotation operation on the operation knob 5, even if the operation knob 5 is accidentally pressed depending on the operation state, it can be determined that the rotation operation is simple (magnification change operation) while being pressed. It is possible to prevent a mistaken determination that the

  The control unit 9 blinks the numerical value of the digit to be changed and displays the numerical values of other digits on the numerical value displayed on the numerical value display 2 during the numerical value change mode and the digit movement mode. By changing the display state in this way, the digit to be changed is notified to the user. Therefore, the user can accurately perform the operation for setting the digit to be changed, that is, the operation for adjusting the magnification of the increase / decrease amount, by performing the magnification changing operation while viewing this display. Further, the control unit 9 causes both the% lamp 3a and the Hz lamp 3b to blink in the digit movement mode. Thereby, it can notify to a user that it is in digit shift mode. These% lamp 3a and Hz lamp 3b are normally provided in the display unit of the inverter device. As described above, since the lamp originally existing in the inverter device is used, it is not necessary to provide a display means for notifying that the digit shift mode is newly being performed.

  At the stage of shifting from the numerical value display state (or parameter name display state) to the numerical value change mode, the lowest digit of the operation frequency command value (or various parameter values) is increased or decreased according to the number of rotation operations. In addition, after the digit to be changed is set in the digit movement mode, when the operation on the operation knob 5 is not performed for a predetermined time, the digit to be changed is returned to the lowest digit. As a result, it is possible to prevent the operating frequency command value and various parameter values from being changed carelessly.

(Second Embodiment)
Hereinafter, the second embodiment of the present invention will be described mainly with respect to portions different from the first embodiment, with reference to FIGS. 14 to 16.
First, a determination method for detecting each operation state of the operation knob 5 in the control unit 9 will be described with reference to FIGS. 15 and 16. 15 and 16 are diagrams corresponding to FIG. 3 in the first embodiment. The control unit 9 detects a short press operation, a long press operation, and a rotation operation as the operation state with respect to the operation knob 5. That is, the control unit 9 of the present embodiment does not detect a rotation operation while pressing. For this reason, as shown in FIG. 15, the control unit 9 changes the switch state signal to the H level while the pulse signal is generated (the rotation operation is performed), and the state of the H level is predetermined. When it continues for more than time T1 and less than predetermined time T2, it is judged that the short press operation was performed in the middle of rotation operation. Further, as shown in FIG. 16, when the switch state signal changes to the H level and the H level state continues for a predetermined time T2 or longer as shown in FIG. It is determined that a long press operation was performed on the way.

  As described above, the control unit 9 according to the present embodiment does not detect the rotation operation while pressing, which is the magnification changing operation according to the first embodiment. For this reason, in this embodiment, the operation content for the state transition in the standard monitor mode and the setting monitor mode is different from that in the first embodiment. FIG. 14 is a state transition diagram in the standard monitor mode. As shown in FIG. 14, when a rotation operation or a short press operation is performed in the numerical display state (operation frequency display), the mode shifts to a numerical value change mode. If a long press operation is performed during this numerical value change mode, the operating frequency command value is determined (set), and the numerical value display state is restored. If a short press operation is performed during the numerical value change mode, the mode shifts to the digit movement mode.

  In the digit movement mode, the digit to be changed in the numerical value change mode is changed according to the number of rotation operations. Specifically, each time a clockwise rotation operation is performed, the digit to be changed moves one right, and every time a counterclockwise rotation operation is performed, the digit to be changed is 1 Move left one. Thus, in the present embodiment, the short press operation performed during the numerical value change mode and the rotation operation performed during the digit movement mode correspond to the magnification change operation. If a short press operation is performed during this digit movement mode, the value change mode is restored. Here, description of the state transition in the setting monitor mode is omitted, but the operation during the setting monitor mode is also changed in the same manner as in the standard monitor mode described above.

  As described above, according to the present embodiment, the digit shift mode is entered by performing a short press operation during the numerical value change mode for setting the operation frequency command value or various parameter values. In the digit movement mode, the digit to be changed is changed according to the number of rotation operations. Even with such a configuration, it is possible to adjust the increment or decrement of the numerical value by changing the digit to be changed, so that the same operation and effect as in the first embodiment can be obtained.

  In addition, after shifting to the digit movement mode, even if the pressing state of the operation knob 5 is released, the numerical value change mode is not restored, so that the digit to be changed can be set by a normal rotation operation. Therefore, according to the configuration of the present embodiment, the operability of the operation relating to the setting of the digit to be changed is improved as compared with the configuration of the first embodiment. Moreover, between the numerical value change mode and the digit movement mode, it is possible to shift to both by a short press operation with a short operation time. Therefore, it is possible to further improve the operability when it is necessary to frequently move digits when setting numerical values.

(Third embodiment)
Hereinafter, with reference to FIG. 17, the third embodiment of the present invention in which the operation content for the state transition in the standard monitor mode and the setting monitor mode is changed with respect to the second embodiment, The difference will be mainly explained.

  FIG. 17 is a state transition diagram in the standard monitor mode. As shown in FIG. 17, when a rotation operation or a short press operation is performed in the numerical display state (operation frequency display), the mode shifts to the numerical value change mode. If a short press operation is performed during this numerical value change mode, the operating frequency command value is determined (set) and the numerical value display state is restored. If a long press operation is performed during the numerical value change mode, the mode shifts to the digit movement mode.

  Thus, in this embodiment, the long press operation performed during the numerical value change mode and the rotation operation performed during the digit movement mode correspond to the magnification change operation. Here, description of the state transition in the setting monitor mode is omitted, but the operation during the setting monitor mode is also changed in the same manner as in the standard monitor mode described above.

  As described above, according to the present embodiment, the digit shift mode is entered by performing a long press operation during the numerical value change mode for setting the operation frequency command value or various parameter values. In the digit movement mode, the digit to be changed is changed according to the number of rotation operations. Even with such a configuration, it is possible to adjust the increment or decrement of the numerical value by changing the digit to be changed, so that the same operation and effect as in the first embodiment can be obtained. In addition, since it is possible to shift from the numerical value change mode to the numerical value display state (or parameter name display state) by a short press operation with a short operation time, operability when only checking the operation frequency command value (or various parameter values) is performed. Can be further improved.

(Other embodiments)
The present invention is not limited to the embodiments described above and illustrated in the drawings, and the following modifications or expansions are possible.
Both the% lamp 3a and the Hz lamp 3b may be turned on during the digit movement mode. The lamp to be blinked or lit during the digit movement mode is not limited to the% lamp 3a and the Hz lamp 3b, and other display lamps of the display lamp group 3 may be used, or a display means is newly provided. Also good. Further, the means for notifying the user that the digit movement mode is being used is not limited to the display of the display lamp. For example, the digit to be changed blinks in numerical value change mode and other digits light up, and the digit to be changed blinks in high brightness and other digits light up in digit movement mode. Good. According to this method, it is possible to notify that the digit movement mode is being performed only by the display state of the numerical indicator 2.
During the digit movement mode, the operation frequency command value or the parameter value is displayed on the numerical display 2, but these display may be performed as necessary. When these are not displayed, only a part of the 7-segment LED of the digit to be changed may be lit or blinked. Thereby, in the digit movement mode, the digit to be changed and other digits can be clearly distinguished. Further, in this way, it is possible to distinguish between the numerical value change mode and the digit movement mode only by the display state of the 7-segment LED, that is, the display state of the numerical value display 2. Control to make the display state of the digit to be changed different from the display state of other digits may be performed as necessary. For example, instead of this control, display means for notifying the user of the digit to be changed may be newly provided. The numerical display is not particularly limited as long as it can display a numerical value of a plurality of digits, and may be constituted by a liquid crystal display device, for example.

Control unit 9 may be also detected rotation operation period from released the operation knob 5 until a predetermined time T1 elapses. Further, the control unit 9 may determine that the pressing operation has been performed even if the switch state signal is at the H level for a time shorter than the predetermined time T1.
In 3rd Embodiment, you may comprise the control part 9 so that rotation operation can be detected, pressing. In this case, during the numerical value change mode, if a rotation operation is detected while being pressed, the digit shift mode is entered, and the change target digit may be moved according to the number of rotation operations while being pressed. In this case as well, even if the pressing state is released during the digit movement mode, the numerical value changing mode is not returned, and when the short pressing operation is subsequently performed, the numerical value changing mode is restored.

Regardless of the digit to be changed, it may be configured such that it can be increased to the upper limit value according to the clockwise rotation operation. Further, it may be configured such that it can be reduced to the lower limit value according to the counterclockwise rotation operation regardless of the digit to be changed. For example, it is assumed that the upper limit value of the operation frequency command value is 60.0 Hz. According to each of the above-described embodiments, when the current operation frequency command value is 30.5 Hz and the digit to be changed is in the first place, if the digit shift mode is not used, it can be set only up to 59.5 Hz. In such a case, the numerical value of the first decimal place may be increased to 60.0 Hz in accordance with the number of clockwise rotation operations regardless of the digit to be changed.
For example, it is assumed that the lower limit value of the operation frequency command value is 0.0 Hz. According to each of the embodiments described above, when the current operation frequency command value is 30.5 Hz and the digit to be changed is in the first place, it can be set only up to 0.5 Hz if the digit shift mode is not used. In such a case, regardless of the digit to be changed, the numerical value of the first decimal place may be decreased to 0.0 Hz according to the number of counterclockwise rotation operations. . In this way, the operation of shifting to the digit shift mode and then shifting to the numerical value change mode is reduced, and the convenience is further improved.

As operation patterns of state transition during the standard monitor mode and the setting monitor mode, three different operation patterns are shown for each of the first to third embodiments. The inverter device 1 may be configured to accept all three operation patterns, and the user may select a desired pattern from each operation pattern by setting a predetermined parameter. Regarding the display control of the numerical indicator 2 and the display lamp group 3, various patterns can be considered as described above. The inverter device 1 may be configured to be able to realize all these display control patterns, and the user may select a desired pattern from the display control patterns by setting predetermined parameters.
In the first embodiment, a switch that operates alternately can be used as the push switch 11.
The numerical value setting device of the present invention is not limited to the inverter device, and can be applied to all devices capable of setting operation conditions and the like, and may be applied to, for example, a measuring device.

  In the drawings, 1 is an inverter device, 2 is a numerical indicator, 3a is a% lamp (operation state notification means), 3b is a Hz lamp (operation state notification means), 5 is an operation knob (operation means), 9 is a control unit, Reference numeral 12 denotes a numerical value setter.

Claims (11)

In the numerical value setter that sets the frequency and parameter value,
A numerical indicator for displaying a numerical value of a plurality of digits corresponding to the frequency and the parameter value;
An operation means configured to enable a rotation operation and a pressing operation in the rotation axis direction of the rotation operation;
The frequency and the parameter value are set according to the operation of the operation means, and a control unit for controlling the display of the numerical indicator,
The controller is
In accordance with the rotation operation, the numerical value corresponding to the frequency and parameter value is increased or decreased based on a predetermined magnification, and the increased or decreased numerical value is displayed on the numerical value display,
The magnification is changed according to a magnification change operation including the rotation operation and the pressing operation ,
When the rotation operation is performed in the state where the pressing operation is performed, it is determined that the magnification change operation is performed,
A numerical value setter characterized by ignoring the rotation operation performed from a start time of the pressing operation to a time after a predetermined time has elapsed . In the numerical value setter that sets the frequency and parameter value,
A numerical indicator for displaying a numerical value of a plurality of digits corresponding to the frequency and the parameter value;
An operation means configured to enable a rotation operation and a pressing operation in the rotation axis direction of the rotation operation;
The frequency and the parameter value are set according to the operation of the operation means, and a control unit for controlling the display of the numerical indicator,
The controller is
In accordance with the rotation operation, the numerical value corresponding to the frequency and parameter value is increased or decreased based on a predetermined magnification, and the increased or decreased numerical value is displayed on the numerical value display,
The magnification is changed according to a magnification change operation including the rotation operation and the pressing operation ,
When the rotation operation is performed after the pressing operation is performed, it is determined that the magnification changing operation is performed,
A numerical value setter characterized by ignoring the rotation operation performed from a start time of the pressing operation to a time after a predetermined time has elapsed . The numerical setting device according to claim 2, wherein the pressing operation is a long pressing operation . Wherein the control unit, numerical value setting device according to any one of claims 1 3, characterized by ignoring the pressing operation the rotation operation from the end is performed up to the time after a predetermined time of. Wherein, when said the pressing operation of less than the predetermined time in a state where the rotation operation is being performed is performed, any one of claims 1 to 4, characterized in that to ignore this pressing operation The numerical value setter described in the section . The control unit is configured to change a display state of a least significant digit that can change a numerical value and a display state of another digit among a plurality of digits of the numerical display according to the magnification. The numerical value setting device according to any one of 1 to 5 . 7. The numerical value setting device according to claim 6 , wherein the control unit displays one of the least significant digit and the other digit that can be changed in numerical value, and displays the other in blinking . 8. The numerical value setting device according to claim 6 , wherein the control unit displays one of the least significant digit and the other digit that can change the numerical value with high luminance . Each digit of the numerical display is composed of 7 segment LEDs,
Wherein the control unit, and a 7-segment LED of the numerical modifiable lowest seven segment LED and the other digit digit claim 6, wherein varying only the display state of some of the segments 8 The numerical value setting device as described in any one of . During a period when the magnification changing operation is performed, any one of the preceding claims, characterized in that it comprises an operating state informing means for informing to a user that is in magnification changing operation 9 value setting device according to. The inverter apparatus provided with the numerical value setting device as described in any one of Claim 1 to 10.

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