CN1036624C - Method for setting up operating constant of diverting apparatus - Google Patents

Abstract

The present invention utilizes the combination of the increase key, the decrease key and the fast-forward key used to control the set value, and uses the data display part on the control panel to carry out the setting operation of the required constant. Within the predetermined time period when the decrease key designates its increase or decrease direction, as the continuous operation time of the above-mentioned fast-forward key becomes longer, the above-mentioned set value change amount of the step-shaped increase or decrease increases with a predetermined ratio, or, when the above-mentioned increase key Or, when the down key is individually and continuously operated, the time required for the stepwise change of the set value unit amount is shortened at a predetermined ratio as the continuous operation time becomes longer.

Description

Operation constant setting method of inverter device

The present invention relates to a method of setting operation constants of an inverter device for variable speed control of an induction motor.

For the existing operating constant setting method such as disclosed in European Patent Publication EP 0124406 A1, the setting keys other than ten numeric keys on the operation control panel of the converter device are used to sequentially set each There are different numbers of operation constants in the change range of the set value. At this time, the type of the change speed of the set value can be known by the above-mentioned setting key.

However, in the conventional operating constant setting method as described above, when the setting ranges such as 0-100 and 0-10000 are wide, the object of setting is an operating constant of a plurality of different numerical values. Under normal circumstances, if the setting value change speed is selected as an appropriate value corresponding to the narrow setting area, the required setting time will be longer when the setting area is wider, and if on the contrary, in When setting the speed, when the above setting area is narrow, it becomes difficult to set the constant subdivision.

Therefore, it is an object of the present invention to provide an operation constant setting method of an inverter device that can appropriately and easily set a plurality of different numerical constants in the setting area.

In order to accomplish the above object, the operation constant setting method of the inverter device of the present invention is a method of setting keys other than ten numeric keys for a plurality of operation constants of the inverter device for controlling the induction motor by variable speed, that is, in On the operation control panel of the above-mentioned converter device, through the combination of the increase key for increasing the set value, the decrease key and the fast forward key for decreasing it, the required constant setting is performed by using the data display part on the control panel Operation, within each predetermined time period when using the above-mentioned increase key or decrease key to designate its increase or decrease direction, as the continuous operation time of the above-mentioned fast-forward key becomes longer, the change of the above-mentioned set value of the step-shaped increase or decrease The amount increases at a predetermined ratio, or, during the continuous operation of the above-mentioned increase key or decrease key, as the continuous operation time becomes longer, the time required for the stepwise change of the set value unit quantity is shortened at a predetermined ratio .

The present invention does not use ten numeric keys to set the required operating constants, but to change the change speed of the set value by setting the continuous operation time of the keys on the data display part of the operation control panel. With the increase of the above-mentioned continuous operation time, the variable of the above-mentioned set value that increases or decreases stepwise in each predetermined time becomes larger. The shortening of the required time is realized in the step-shaped change of the quantity. In each case, once the target value is approached, the continuous operation of the above-mentioned setting key is interrupted, and the setting operation is resumed due to the small change speed of the above-mentioned setting value. It can reach the target setting value smoothly and correctly.

In any one of the above-mentioned one and two cases, the following parts are used to constitute the required operation part: the CPU that receives the operation data of each input from the setting key group is output by the data display part, and the output reaches The ROM of the CPU stores the program data, and the RAM performs the data exchange of the above-mentioned set constant with the above-mentioned CPU.

Fig. 1 is the corresponding characteristic curve diagram (one) that represents the setting value of the embodiment of the present invention and setting key operation time;

Fig. 2 is a characteristic curve diagram (the second) corresponding to the setting value and setting key operation time of the embodiment of the present invention;

Fig. 3 is a circuit block diagram corresponding to the operation constant setting part of Fig. 1;

Fig. 4 is a circuit block diagram corresponding to the operation constant setting part of Fig. 2;

Explanation of symbols:

1: Data display; 2: Increase key;

3: Fast forward key; 4: Decrease key;

5: Set key; 6: CPU;

7: ROM (program); 8: RAM (constant for operation)

Embodiment of the present invention is described below by accompanying drawing, and Fig. 1 and Fig. 2 are respectively the characteristic graph corresponding to above-mentioned setting value and setting key operation time; Fig. 3 and Fig. 4 are respectively the operation constant on the converter device In the block diagram of the setting part, the components having the same functions as those shown in FIG. 3 in FIG. 4 are denoted by the same symbols.

First, in Fig. 3, 1 is a data display for setting data; 2 to 5 are various setting keys, 2 is an increase key, 3 is a fast forward key, 4 is a decrease key, and 5 is a memory storage for setting data The setting key used, 6 is the central processing unit CPU, and it inputs according to each setting from above-mentioned each key, from the program instruction of memory ROM and from RAM carry out required setting data signal of required operation to storage data Output to the above-mentioned data display 1. The above-mentioned keys can be operated simultaneously in various combinations of the increase key 2 and the fast-forward key 3 or the decrease key 4 and the fast-forward key 3 .

FIG. 4 is a diagram in which the fast forward key 3 described in FIG. 3 is removed.

The corresponding characteristic graph of the setting value and setting key operation time of Fig. 1 is a characteristic diagram corresponding to claim 1 of the present invention, showing that it is not the continuous operation of the above-mentioned fast-forward key 3 operated simultaneously with the above-mentioned increase key 2 or decrease key 4. The change of the set value Cs corresponding to the operation time t corresponds to the zones Z ₁₁ , Z ₁₂ , Z ₁₃ ... as the time t increases, and each fixed time period ΔT in each zone is The step-shaped variation ΔC _3n (n=1, 2, 3, ...) of the above-mentioned segment constant value C ₃ increases like ΔC _s1 , <ΔC _s2 <ΔC _s3 <....

Fig. 2 is a characteristic curve diagram corresponding to claim 2 of the present invention, showing the variation of the setting value C _s corresponding to the continuous operation time t of the above-mentioned increase key 2 or decrease key 4, with the increase of the time t And corresponding to the zones Z _{21 ,} Z ₂₂ , Z ₂₃ ..., the time Δt _n (n=1 _, 2, 3 ... ), shortened like Δt ₁ >Δt ₂ >Δt ₃ >....

As mentioned above, in either case of Fig. 1 or Fig. 2, as the continuous operation time t of the setting key increases, the change speed of the above-mentioned set value C _s also increases. Therefore, in any case, if it is close to the target value, the continuous operation of the above-mentioned setting key will be interrupted, and since the change speed of the above-mentioned setting value becomes smaller, the setting operation will be resumed, and the target setting can be reached smoothly and correctly. Set the value, and complete the setting operation as above.

According to the present invention, when using setting keys other than the ten number keys for a plurality of operating constants of the inverter device for variable speed control induction motor to set, on the operation control panel of the above-mentioned inverter device, by adding Combination of the increase key for fixed value, the decrease key and fast forward key for decrease, use the data display part on the control panel to perform the setting operation of the required constant, use the above increase key or decrease key designate its increase or decrease direction within the predetermined time, as the continuous operation time of the above-mentioned fast-forward key becomes longer, the above-mentioned set value change amount of the step-shaped increase or decrease is increased by a predetermined ratio, or the above-mentioned increase key Or during the continuous operation of the single operation of the decrease key, as the continuous operation time becomes longer, the time required for the step-shaped change of the set value unit amount is shortened in a predetermined proportion, thus, multiple points in the set value change area In the setting of different operating constants, each constant is easily and accurately set within an appropriate setting time.

Claims (5)

1. the establishing method of the running constant (Cs) of a convertor device, the speed in order to speed change ground control of induction is characterized in that this method may further comprise the steps:

A numerical value that shows described running constant (Cs);

On a direction of increasing or decreasing, begin the described show value of ladder ground change by operating at least one running constant setting key (2,3,4,5);

By the speed of another running setting key (2,3,4,5) of continued operation with the stepped change that increases described show value; With

By stopping operation, stopping the variation of described show value, thereby described show value is set at the desired value of described running constant to described another running setting key.

2. the method for claim 1 is characterized in that, in described increase step, the stepped change of described show value increases in each predetermined period with the set rate of continued operation corresponding to described another running setting key (2,3,4,5).

3. the method for claim 1 is characterized in that, in described increase step, when another running setting key of continued operation when (2,3,4,5), the cycle of the stepped change by shortening described show value is to increase the pace of change of described show value.

4. the method for claim 1 is characterized in that, go up key (2) with one and use as a described running constant setting key, and described another running constant setting key is in and increases progressively direction.

5. method as claimed in claim 2 is characterized in that, a following key (4) is used as a described running constant setting key, and described another running constant setting key then is in the direction of successively decreasing.

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