System Reactions For Sinamics Alarms - Siemens Sinamics S120 Diagnostic Manual

System reactions

8.3 System reactions for SINAMICS alarms

8.3 System reactions for SINAMICS alarms
Designation NONE
Reaction None
Description No reaction when a fault occurs
Designation OFF1
Reaction Brake along the ramp-function generator down ramp followed by pulse disable
Description Closed loop speed control (p1300 = 20, 21)
•
•
Closed loop torque control (p1300 = 23)
•
•
Designation OFF2
Reaction Internal/external pulse disable
Description Closed-loop speed and torque control
•
•
•
936
n_set=0 is input immediately to brake the drive along the ramp-function generator down ramp
(p1121).
Standstill is detected when the motor holding brake (if parameters have been assigned for it) is
closed (p1215). The pulses are suppressed when the brake closing time (p1217) expires.
The standstill is detected when the speed actual value of the speed threshold (p1226) is
undershot or when the monitoring time (p1227) started when speed setpoint ≤ speed threshold
(p1226) has expired.
The following applies to closed-loop torque control: Reaction as for OFF2
When the system switches over to closed-loop torque control (p1501), the following applies:
There is no separate braking reaction.
If the speed actual value falls below the speed threshold (p1226), then a possibly parameterized
motor holding brake is closed. The pulses are suppressed when the brake closing time (p1217)
expires.
Instantaneous pulse suppression, the drive "coasts" to a standstill.
The motor holding brake (if parameterized) is closed immediately.
Switch-on inhibit is activated.
Diagnostics Manual, 07/2010, 6FC5398-8BP40-0BA0
Alarms