Mitsubishi Electric 800 Series Instruction Manual page 260
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Disabling the stall prevention operation and fast-response current limit
according to operating conditions (Pr.156)
• Referring to the table below, enable/disable the stall prevention operation and the fast-response current limit operation,
and also set the operation at OL signal output.
Pr.156 setting
Fast response current limit
0 (initial value)
1
●
2
3
●
4
5
●
6
7
●
8
9
●
10
11
●
12
13
●
14
15
●
Power driving
100
*3
Regenerative
●
driving
16
17
●
18
19
●
20
21
●
22
23
●
24
25
●
26
27
●
28
29
●
30
31
●
101
Power driving ●
*3
Regenerative
●
driving
*1
When "operation stop at OL signal output" is selected, the inverter stops its operation at the OL signal output (stall prevention stop).
*2
The OL signal and E.OLT are 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. In such case, set the Pr.156 and the 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
●: disabled
Acceleration
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
: enabled
●: disabled
Constant speed
Deceleration
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
5.7 (H) Protective function parameter
OL signal output
: operation continued
*1
●: operation stopped
*2
―
*2
―
●
●
●
●
●
10
●
●
●
●
●
●
●
●
●
●
*2
―
*2
―
259
5. PARAMETERS
3
4
5
5
5
6
7
8
9
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