Fault Reactions - Siemens SINAMICS G120 Manual

Faults and Alarms
Faults and Alarms – Overview
3.1.2

Fault reactions

Specifies the default reaction when a fault occurs. The optional brackets indicate
whether the default fault reactions can be changed and which fault reactions can
be adjusted via parameters (p2100, p2101). The following fault reactions are
defined:
Table 3-2 Fault reactions
List PROFI-
drive
NONE -
OFF1 ON/
OFF
OFF2 COAST
STOP
OFF3 QUICK
STOP
STOP2 -
IASC/DCBRk -
3-656
Reaction
None No reaction when a fault occurs.
Brake along the Speed control
ramp-function
• n_set = 0 is input immediately to brake the drive along
generator
the deceleration ramp (p1121).
deceleration
• Zero speed is detected if the actual speed drops below
ramp followed by
the threshold in p1226 or if the monitoring time (p1227)
pulse inhibit
started when speed setpoint <= speed threshold (p1226)
has expired.
Closed-loop torque control (p1300 = 22)
• The following applies to closed-loop torque control
mode: Reaction as for OFF2.
• When changing over to closed-loop control using p1501,
the following applies: There is no dedicated braking
response.
Internal/external Speed control and closed-loop torque control
pulse inhibite
• Instantaneous pulse suppression, the drive "coasts" to a
standstill
• Switching on inhibited is activated.
Brake along Speed control
OFF3
• n_set=0 is input immediately to brake the drive along the
deceleration
OFF3 deceleration ramp (p1135).
ramp followed by
• Zero speed is detected if the actual speed drops below
pulse inhibit
the threshold in p1226 or if the monitoring time (p1227)
started when speed setpoint <= speed threshold (p1226)
has expired.
• Switching on inhibited is activated.
Closed-loop torque control (p1300 = 22)
• Changeover to speed-controlled operation and other
reactions as described for speed-controlled operation.
• n_set = 0 is input immediately to brake the drive along
n_set = 0
the OFF3 deceleration ramp (p1135). Although ramping
down along the OFF3 deceleration ramp r0052 bit 5 = 1.
• The drive remains in closed-loop speed control mode.
• When a fault occurs with this fault reaction, DC braking
-
is triggered.
• The DC brake must have been put into operation (p1230
to p1239).
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 01/2011
Description
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