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Mitsubishi Electric FR-CS84-012 Instruction Manual Page 122

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 Disabling the stall prevention operation and fast-response current limit
according to operating conditions (Pr.156)
• Referring to the following table, enable/disable the stall prevention operation and the fast-response current limit operation,
and also set the operation at OL signal output.
Fast-response
Pr.156
current limit
setting
●: disabled
0
(initial value)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Power driving
*3
100
Regenerative
driving
Power driving
*3
101
Regenerative
driving
*1
When "operation stop at OL signal output" is selected, the fault output "
stops.
*2
The OL signal or E.OLT is not outputted because fast-response current limit and stall prevention are not operating.
*3
Setting values "100, 101" can be individually set for power driving and regenerative driving. The setting value "101" disables the fast-response
current limit during power driving.
NOTE
• When the load is heavy or the acceleration/deceleration time is short, stall prevention operates and acceleration/deceleration
may not be performed according to the time set. Set the Pr.156 and stall prevention operation level to the optimum values.
• For lift applications, make settings to disable the fast-response current limit. Otherwise, the torque may be insufficient, causing
the load to drop.
Stall prevention operation selection
○: enabled
Acceleration
○: enabled
●: disabled
Constant speed
Deceleration
" (stop due to stall prevention) is displayed, and operation
5.6 (H) Protective function parameter
2
2
OL signal output
○: enabled
*1
●: disabled
3
4
5
6
7
*2
8
9
10
*2
*2
*2
121
5. PARAMETERS

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