Siemens SINAMICS G120D List Manual page 770

Faults and alarms
Overview of faults and alarms
Table 3-2 Fault reactions, continued
List PROFI-
drive
OFF3 QUICK
STOP
STOP1 -
STOP2 -
IASC/ -
DCBRAKE
ENCODER -
3-770
Response
Brake along the Closed loop speed control (p1300 = 20, 21)
OFF3 down ramp
• n_set = 0 is input immediately to brake the drive along
followed by pulse
the OFF3 down ramp (p1135).
inhibit
• When zero speed is detected, the motor holding brake (if
parameterized) is closed. The pulses are suppressed at
the end of the holding brake closing time (p1217).
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.
• Switching on inhibited is activated.
Torque control (p1300 = 22, 23)
• Changeover to speed-controlled operation and other
reactions as described for speed-controlled operation.
- Under development.
• n_set = 0 is input immediately to brake the drive along
n_set = 0
the OFF3 down ramp (p1135).
• The drive remains in the closed-loop speed control
mode.
• For synchronous motors, the following applies:
-
If a fault occurs with this fault reaction, an internal arma-
ture 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).
Internal/external The fault reaction ENCODER is applied as a function of
pulse inhibit the setting in p0491.
(p0491)
Factory setting:
p0491 = 0 --> Encoder fault causes OFF2
Notice:
When changing p0491, it is imperative that the information
in the description of this parameter is carefully observed.
Description
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SINAMICS G120D List Manual (LH14), 01/2013