Mitsubishi Electric F700 Instruction Manual page 66

(6) To further prevent an alarm stop (Pr.154)
⋅ When Pr. 154 is set to "0", the output voltage reduces during stall prevention operation. By making setting to
reduce the output voltage, an overcurrent trip can further become difficult to occur.
⋅ Use this function where a torque decrease will not pose a problem.
Pr.154 Setting
0 Output voltage reduced
1
Output voltage not reduced
(initial value)
(7) Limit the stall prevention operation and fast-response current limit operation according
to the operating status (Pr.156)
⋅ 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.
Stall prevention
operation selection
Fast-response
:Activated
current limit
:Not activated
Pr. 156
: Activated
Setting
: Not
activated
0
(initial
value)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
100
*2
*1 When "Operation not continued for OL signal output" is selected, the "
operation stopped.
*2 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.
CAUTION
⋅ When the load is heavy, when the lift is predetermined, 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.
Description
OL Signal
Output
:Operation
continued
:Operation
not continued
*1
Adjust the output torque of the motor (current)
Stall prevention
operation selection
Fast-response
:Activated
current limit
:Not activated
Pr. 156
:Activated
Setting
: Not
activated
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
101
*2
" alarm code (stopped by stall prevention) is displayed and
OL Signal
Output
:Operation
continued
:Operation
not continued
*1
3
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