Operating Instructions

SINAMICS G120 CU230P-2 Control Units
List Manual, 04/2018, A5E33838102
753
4 Faults and alarms
4.1 Overview of faults and alarms
Fault reactions
The following fault reactions are defined:
Table 4-2 Fault reactions
List PROFIdrive Reaction Description
NONE - None No response when a fault occurs.
Note
With "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)
• n_set = 0 is input immediately to brake the drive along the ramp-
function generator ramp down (p1121).
• When zero speed is detected, the motor holding brake (if
parameterized) is closed (p1215). The pulses are suppressed when
the brake application time (p1217) expires.
Zero speed is detected if the actual speed drops below the
threshold in p1226 or if the monitoring time (p1227) started when
speed setpoint <= speed threshold (p1226) has expired.
OFF1_
DELAYED
- As for OFF1,
however delayed
Faults with this fault response 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 disable
• Instantaneous 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.
OFF3 QUICK
STOP
Brake along the
OFF3 down ramp
followed by pulse
disable
Speed control (p1300 = 20)
• n_set = 0 is input immediately to brake the drive along the OFF3
ramp down (p1135).
• When zero speed is detected, the motor holding brake (if
parameterized) is closed. The pulses are suppressed when the
holding brake's closing time (p1217) expires.
Zero speed is detected if the actual speed drops below the
threshold in p1226 or if the monitoring time (p1227) started when
speed setpoint <= speed threshold (p1226) has expired.
• Switching-on inhibited is activated.
STOP2 - n_set = 0 • n_set = 0 is input immediately to brake the drive along the OFF3
ramp down (p1135).
• The drive remains in closed-loop speed control.
IASC/DCBRK - - • For synchronous motors, the following applies:
If a fault occurs with this fault reaction, an internal armature short-
circuit is triggered.
The conditions for p1231 = 4 must be observed.
• For induction motors, the following applies:
If a fault occurs with this fault reaction, DC braking is triggered.
DC braking must have been commissioned (p1230 to p1239).