Operating Instructions

Overview of faults and alarms
Faults and alarms
3-651
© Siemens AG 2008 - 2013 All Rights Reserved
SINAMICS G120 CU230P-2 Control Units List Manual (LH9), 01/2013
Fault reactions
The following fault reactions are defined:
Tabelle 3-2 Fault reactions
List PROFI-
drive
Reaction Description
NONE - None No reaction when a fault occurs.
Note:
With the "Basic positioner" (r0108.4 = 1), the following
applies:
When a fault occurs with fault reaction "NONE", an active
traversing task is interrupted and the system switches to
tracking mode until the fault has been rectified and
acknowledged.
OFF1 ON/
OFF
Brake along the
ramp-function
generator down
ramp followed by
pulse inhibit
Speed control (p1300 = 20, 21)
• n_set = 0 is input immediately to brake the drive along
the ramp-function generator deceleration ramp (p1121).
• When zero speed is detected, the motor holding brake (if
parameterized) is closed (p1215). The pulses are sup-
pressed when the brake application time (p1217)
expires.
Zero speed is detected if the actual speed drops below
the threshold (p1226) or if the monitoring time (p1227)
started when the speed setpoint <= speed threshold
(p1226) has expired.
Torque control (p1300 = 22, 23)
• The following applies to closed-loop torque control
mode:
Reaction as for OFF2
• When the system switches to torque control with p1501,
the following applies:
No separate braking reaction.
If the actual speed value drops below the speed thresh-
old (p1226) or the timer stage (p1227) has expired, the
motor holding brake (if one is being used) is closed. The
pulses are suppressed when the brake application time
(p1217) expires.
OFF1_
DELAYED
- As for OFF1,
however delayed
Faults with this fault reaction only become effective after
the delay time in p3136 has expired.
The remaining time up to OFF1 is displayed in r3137.
OFF2 COAST
STOP
Internal/external
pulse inhibit
Speed and torque control
• Immediate pulse suppression, the drive “coasts” to a
standstill.
• The motor holding brake (if one is being used) is closed
immediately.
• Switching on inhibited is activated.