Mitsubishi Electronics FR-A700 ユーザーズマニュアル

⋅ Refer to the following table and select whether fast response current limit operation will be performed or not and

the operation to be performed at OL signal output.

*1

When "Operation not continued for OL signal output" is selected, the " 

 " fault (stopped by stall prevention) is displayed and operation

stopped.

*2

Since both fast response current limit and stall prevention are not activated, OL signal and E.OLT are not output.

*3

The settings "100" and "101" allow operations to be performed in the driving and regeneration modes, respectively. The setting "101" disables the

fast response current limit in the driving mode.

Pr. 156 

Pr. 156 

0

(initial 

value)

16

1

17

2

18

3

19

4

20

5

21

6

22

7

23

8

24

9

25

10

26

11

27

12

28

13

29

14

30

15

⎯ 

*2

31

⎯ 

*2

100

*3

Driv

in

g

101

*3

Dr

iv

in

g

Re

gene

ra

tion

⎯ 

*2

Re

gene

ra

tion

⎯ 

*2

⋅ When the load is heavy, or when the acceleration/deceleration time is short, stall prevention is activated and acceleration/

deceleration may not be made according to the preset acceleration/deceleration time. Set Pr. 156 and stall prevention operation

level to the optimum values.

⋅ In vertical lift applications, make setting so that the fast response current limit is not activated. Torque may not be produced,

causing a drop due to gravity.

Do not set a small value as the stall prevention operation current.
Otherwise, torque generated will reduce. 
Always perform test operation.
Stall prevention operation during acceleration may increase the acceleration time.

Stall prevention operation performed during constant speed may cause sudden speed changes.

Stall prevention operation during deceleration may increase the deceleration time, increasing the deceleration 

distance.

♦ Parameters referred to ♦

⋅ Pr. 22 Torque limit level  

⋅ Pr. 73 Analog input selection  

⋅ Pr. 178 to Pr. 189 (Input terminal function selection)  

⋅ Pr. 190 to Pr. 196 (output terminal function selection)  

⋅ Pr. 858 Terminal 4 function assignment, Pr. 868 Terminal 1 function assignment