E6581301

RX-CCA

RR/S4 -CCA, VI/II-CCA

 

+100%

 

Torque produced

 

by motor

 

 

-10V

0%

 

 

0V

+10V

 

-100%

 

100%

 

Torque produced

 

by motor

 

0

10V

0V

VI/II-CCA

100%

Torque produced by motor

 

 

 

0

 

 

 

 

 

 

 

 

 

4mA

20mA

 

 

 

 

 

 

[Parameter setting]

 

 

 

 

 

 

 

 

Title

Function

Adjustment range

 

 

Default setting

 

 

 

 

 

￿:VI/II (voltage/current input)

 

 

 

 

 

 

 

 

￿:RR/S4 (potentiometer/voltage

 

 

 

 

 

 

￿￿￿￿￿

Power running torque limit 1 selection

input)

 

 

￿￿

 

 

 

 

 

￿:RX (voltage input)

 

 

 

 

 

 

 

 

￿:￿￿￿￿

 

 

 

 

 

 

 

 

￿:VI/II (voltage/current input)

 

 

 

 

 

 

 

Regenerative braking torque limit 1

￿:RR/S4 (potentiometer/voltage

 

 

 

 

 

 

￿￿￿￿￿

 

 

￿￿

 

6

 

input)

 

 

 

 

selection

 

 

 

 

 

￿:RX (voltage input)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

￿:￿￿￿￿

 

 

 

 

 

 

 

 

 

 

 

 

 

In torque control mode, the values set with these parameters limit torque command values.

6.25.2 Torque limit mode selection at acceleration/deceleration"

￿￿￿￿￿: Acceleration/deceleration operation after torque limit

"

Function

Using this function in combination with the mechanical brake of the lifting gear (such as a crane or hoist) makes it possible to minimize the delay before the brake starts working, and thus prevents the load from falling because of a decrease in torque.

Moreover, it improves the motor’s response during inching operation and keeps the load from sliding down.

[Parameter setting]

Title

Function

Adjustment range

Default setting

￿￿￿￿￿

Acceleration/deceleration operation after

￿: In sync with

￿￿￿￿￿￿

torque limit

acceleration/deceleration

 

￿: In sync with min. time

 

 

 

 

(1)￿￿￿￿=￿ (In sync with acceleration/deceleration)

The increase in operation frequency is inhibited by the activation of the torque limit function. In this control mode, therefore, the actual speed is always kept in sync with the operation frequency. The operation frequency restarts to increase when torque decreases as a result of the release of the mechanical brake, so the time required for the specified speed to be reached is the sum of the delay in operation of the mechanical brake and the acceleration time.

F-47

Page 163
Image 163
Toshiba VF-AS1 instruction manual RX-CCA RR/S4 -CCA, VI/II-CCA, 10V +10V, Vi/Ii-Cca