(H) Protective function parameter
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.
Fast
response
Pr.156
current limit
setting
: enabled
: disabled
0
(initial value)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
100
When "operation stop at OL signal output" is selected, the inverter stops its operation at the OL signal output (stall prevention stop).
The OL signal and E.OLT are not outputted because fast-response current limit and stall prevention are not operating.
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.
334
PARAMETERS
Stall prevention
operation selection
OL signal
: enabled
output
: disabled
operation
continued
operation
stopped
―
―
:
response
Pr.156
current limit
setting
: enabled
:
: disabled
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
101
Stall prevention
operation selection
: enabled
Fast
: disabled
OL signal
output
:
operation
continued
:
operation
stopped
―
―