JPH0594201A - Method for setting operating constant of inverter device - Google Patents

Abstract

PURPOSE:To easily and precisely set plural operation constants which differ in setting range respectively at proper time in the inverter device which controls an induction motor. CONSTITUTION:This method is for setting the operation constants of the inverter device which variable speed control over the induction motor with setting keys other than a ten-key and the set value increase up key 2, decrease down key 4, and fast-forwarding key 3 of the console panel of the inverter device are used in combination to sets the necessary constants through the data display part 1 on the panel; and the increase or decrease direction is specified with the up key 2 or down key 4 and the quantity of variation in set value which increases or decreases stepwise at specific intervals of time is increased at a specific ratio as the continuous operation time of the fast forwarding key 3 increases or the time required for the stepwise variation in set value unit quantity in the individual continuous operation of the up key 2 or down key 4 is shortened at a specific ratio as the time of the continuous operation increases.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for setting an operating constant of an inverter device which controls an induction motor at a variable speed.

[0002]

2. Description of the Related Art A conventional operation constant setting method of this kind is to set a plurality of operation constants having different change ranges of setting values one by one using a setting key other than a numeric keypad on an operation panel of an inverter device. It is known that the set value changing speed by the key is one kind.

[0003]

However, in the conventional operation constant setting method as described above, for example, 0-10 is used.
If you want to set a plurality of operating constants whose setting range is significantly different, such as 0 and 0-10000, you can select a suitable value for the speed of change of the set value according to the narrow one of the set range. In addition, the required settling time becomes long, and it becomes difficult to set small constants in the narrower setting range at the time of reverse speed selection. In view of this, an object of the present invention is to provide a method for setting an operating constant of an inverter device, which can appropriately and easily set a plurality of constants having different setting ranges.

[0004]

In order to achieve the above object, a method for setting an operating constant of an inverter device according to the present invention uses a setting key other than a numeric keypad for a plurality of operating constants of an inverter device for variable speed control of an induction motor. A setting method, wherein a required constant is set in a data display section on the panel by a combination of an up key for increasing a set value, a down key for decreasing the set value, and a fast-forward key on the operation panel of the inverter device. The up key or the down key is used to specify the direction of increase or decrease, and the amount of change in the set value that increases or decreases in a stepwise manner at predetermined time intervals increases the continuous operation time of the fast forward key. Together with the increase in a predetermined ratio, or in order to change the set value unit amount stepwise when the above-mentioned up key or down key is continuously operated. The amount of time shall be shortened at a predetermined ratio with time of the continuous operation becomes longer.

[0005]

According to the present invention, when the required operation constant is set without using the numeric keypad, the speed of change of the set value in the data display section on the operation panel is changed by the continuous operation time of the setting key. Is to increase the amount of change in the set value that increases or decreases in a stepwise manner at predetermined time intervals with the increase of the continuous operation time, and No. 2 is the unit amount of the set value with the increase of the continuous operation time. The time required for stepwise change is shortened, and in any case, when the target value is approached, the continuous operation of the setting key is temporarily interrupted and the setting operation is restarted from the point where the set value changing speed becomes small. By doing so, the target set value can be smoothly and accurately reached.

In either of the above cases 1 and 2, the CPU that receives various inputs from the setting key group and outputs the operation data to the data display unit, and the program storage data to the CPU are output. The ROM and the RAM for exchanging the data of the set constant with the CPU constitute a required arithmetic unit.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 and FIG. 2 are characteristic diagrams of the set value versus the set key operation time, and FIG. 3 and FIG. 4 are block circuit diagrams of the operating constant setting unit in the inverter device, respectively. The same display symbols are attached to the components having the same functions as in the case. First, in FIG. 3, 1 is a data display for setting data, 2 to 5 are various setting keys, 2 is an up key, 3 is a fast-forward key, 4 is a down key, and 5 is a set key for storing setting data in a memory. is there. Reference numeral 6 designates various setting inputs from the respective keys and a storage element R.
It is a CPU that performs a required calculation according to a program command from the OM and the stored data in the RAM and outputs a required setting data signal to the data display 1. The above keys are
It is assumed that the up key 2 and the fast-forward key 3 or the down key 4 and the fast-forward key 3 are simultaneously operated.

FIG. 4 shows the fast-forward key 3 in FIG.
Is excluded.

Next, the set value vs. set key operation time characteristic diagram of FIG. 1 is a characteristic diagram corresponding to claim 1 of the present invention, and is operated simultaneously in pairs with the up key 2 or the down key 4. 7 shows a pattern of changes in the set value C _s with respect to the continuous operation time t of the fast-forward key 3, and areas Z ₁₁ , Z ₁₂ , Z ₁₃ , ... Are associated with the increase of the time t, and each area is associated with each area. Stepwise change amount ΔC _{sn of the} set value C _s for each constant time ΔT
(N = 1, 2, 3, ...) is _expressed as ΔC _s1 <ΔC _s2 <ΔC _s3 <...
It has been increased as follows.

Further, FIG. 2 is a characteristic diagram corresponding to claim 2 of the present invention, and shows a change pattern of the set value C _s with respect to the continuous operation time t of the up key 2 or the down key 4. , As the time t increases, the regions Z ₂₁ , Z ₂₂ ,
Z ₂₃ , ... Corresponding to each other, the time Δt required to change the unit amount ΔC _s of the set value C _{s in} a stepwise manner for each area.
_{Let n} (n = 1, 2, 3, ...) Be Δt ₁ > Δt ₂ > Δt ₃ >.
It is shortened as shown.

As described above, in either of the cases of FIG. 1 and FIG. 2, the changing speed of the set value C _s increases as the continuous operation time t of the setting key increases. Therefore, in any case, when the target value is approached, the continuous operation of the setting key is temporarily interrupted, and the setting operation is restarted from the point where the set value changing speed becomes small so that the target set value can be smoothly and accurately reached. The setting operation shall be performed.

[0012]

According to the present invention, when setting a plurality of operating constants of an inverter device for variable speed control of an induction motor with a setting key other than a numeric keypad, an increase for setting values on the operation panel of the inverter device is performed. The required constants are set in the data display section on the panel by the combination of the key, the down key for decrease and the fast-forward key, and either the increase or decrease direction is selected by the up or down key. By increasing the amount of change in the set value that increases or decreases in a stepwise manner at every specified time by a predetermined ratio as the continuous operation time of the fast-forward key increases, or by operating the up key or down key alone. The time required for the stepwise change of the set value unit amount during the continuous operation is shortened at a predetermined rate as the continuous operation time is increased. Accordingly, it is possible to set easily and accurately at each appropriate set time respective constants in the setting of a plurality of operation constants different setpoint change region.

[Brief description of drawings]

FIG. 1 is a characteristic diagram of setting value versus setting key operation time (part 1) showing an embodiment of the present invention.

FIG. 2 is a set value vs. setting key operation time characteristic diagram showing the embodiment of the present invention (No. 2)

FIG. 3 is a block circuit diagram of an operation constant setting unit corresponding to FIG.

FIG. 4 is a block circuit diagram of an operation constant setting unit corresponding to FIG.

[Explanation of symbols]

 1 Data display 2 Up key 3 Fast forward key 4 Down key 5 Set key 6 CPU 7 ROM (program) 8 RAM (operation constant)

Claims (2)

[Claims] 1. A setting method for setting a plurality of operating constants of an inverter device for variable speed control of an induction motor by using a setting key other than a numeric keypad, wherein an up key for increasing a set value and a decreasing key for setting a set value on an operation panel of the inverter device. By using the combination of the down key and the fast-forward key, the required constant is set in the data display section on the panel, and either the increase or decrease direction is designated by the up key or the down key. A method for setting an operating constant of an inverter device, characterized in that the amount of change in the set value that increases and decreases stepwise every predetermined time is increased at a predetermined rate as the continuous operation time of the fast-forward key increases. 2. A method of setting a plurality of operation constants of an inverter device for variable speed control of an induction motor by using a setting key other than a numeric keypad, wherein an up key for increasing a set value and a decrease key for decreasing the same are provided on an operation panel of the inverter device. The down key is used to set the required constant in the data display section on the panel, and the time required for the stepwise change of the set value unit amount when the up key or the down key is continuously operated is set. A method for setting an operating constant of an inverter device, characterized in that the time of continuous operation is lengthened and shortened at a predetermined rate.