ABB ACS850 series, Manual

Page: 194 / 370

194 Parameters
Alarm Drive running:
The drive trips on SAFE TORQUE OFF when one or both of
the STO signals is lost.
Drive stopped:
The drive generates a SAFE TORQUE OFF alarm if both
STO signals are absent. If only one of the signals is lost, the
drive trips on STO1 LOST or STO2 LOST. 2
No Drive running:
The drive trips on SAFE TORQUE OFF when one or both of
the STO signals is lost.
Drive stopped:
No action if both STO signals are absent. If only one of the
signals is lost, the drive trips on STO1 LOST or STO2 LOST. 3
Only Alarm The drive generates a SAFE TORQUE OFF alarm if both
STO signals are absent. If only one of the signals is lost, the
drive trips on STO1 LOST or STO2 LOST. 4
30.08 Cross connection Selects how the drive reacts to incorrect input power and
motor cable connection (i.e. input power cable is connected
to drive motor connection).
No No action taken. 0
Fault The drive trips on fault CABLE CROSS CON. 1
30.09 Stall function Selects how the drive reacts to a motor stall condition.
A stall condition is defined as follows:
• The drive is at stall current limit (
30.10 Stall curr lim ) , and
• the output frequency is below the level set by parameter
30.11 Stall freq hi , and
• the conditions above have been valid longer than the time
set by parameter 30.12 Stall time .
See section Stall protection (parameters 30.09…30.12) on
page 84 .
30.10 Stall curr lim Stall current limit in percent of the nominal current of the
motor. See parameter
30.09 Stall function .
0.0 … 1600.0% Stall current limit. 10 = 1%
30.11 Stall freq hi Stall frequency limit. See parameter 30.09 Stall function .
Note: Setting the limit below 10 Hz is not recommended.
0.5 … 1000.0 Hz Stall frequency limit. 10 = 1 Hz
30.12 Stall time Stall time. See parameter 30.09 Stall function .
0 … 3600 s Stall time. 1 = 1 s
No. Name/Value Description FbEq
Bit Function
0 Ena sup (Enable supervision)
0 = Disabled: Supervision disabled.
1 = Enabled: Supervision enabled.
1 Ena warn (Enable warning)
0 = Disabled
1 = Enabled: Drive generates an alarm upon a stall condition.
2 Ena fault (Enable fault)
0 = Disabled
1 = Enabled: Drive trips on a fault upon a stall condition.