Mitsubishi Electric FR-D720-0.2K-G Instruction Manual page 88

(5) Limit the stall prevention operation according to the operating status (Pr. 156)

Refer to the following table and select whether stall prevention operation will be performed or not and the operation to be
performed at OL signal output.
Stall Prevention Operation
Selection
 : Activated
 : Not activated
Pr. 156
Setting
0 (initial value),
 
1
 
2, 3
4, 5  
 
6, 7
8, 9  
 
10, 11
12, 13  
 
14, 15
 
100,
101

 

When "Operation not continued for OL signal output" is selected, the

Since stall prevention is not activated, OL signal and E.OLT are not output.

The settings "100" and "101" allow operations to be performed in the driving and regeneration modes, respectively.
NOTE
 When the load is heavy or 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.
Do not set a small value as the stall prevention operation current.
Otherwise, torque generated will reduce.
Test operation must be performed.
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. 178 to Pr. 182 (input terminal function selection)
 Pr. 190, Pr. 192 (output terminal function selection)
Adjustment of the output torque (current) of the motor
OL Signal Output
: Operation
continued
: Operation not
continued
 
 
 
 
 
 
 
— 

 

ー
CAUTION
Refer to page 117.
Refer to page 123.
Stall Prevention Operation
Selection
 : Activated
 : Not activated
Pr. 156
Setting
16, 17  
 
18, 19
20, 21  
 
22, 23
24, 25  
 
26, 27
28, 29  
 
30, 31
fault (stopped by stall prevention) is displayed and operation is stopped.
OL Signal Output
: Operation
continued
: Operation not
continued
 
 
 
 
 
 
 
— 

85
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