Faults and Alarms
Overview of faults and alarms
3-1426
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
OFF3 QUICK
STOP
Brake along the
OFF3 decelera-
tion ramp fol-
lowed by pulse
disable
Closed-loop speed control (p1300 = 20, 21)
• n_set = 0 is input immediately to brake the drive along
the OFF3 deceleration ramp (p1135).
• When zero speed is detected, the motor holding brake
(if parameterized) is closed. 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.
• Switching on inhibited is activated.
Closed-loop torque control (p1300 = 23)
• Changeover to speed-controlled operation and other
reactions as described for speed-controlled operation.
STOP1 - - In preparation
STOP2 - n_set = 0 • n_set = 0 is input immediately to brake the drive along
the OFF3 deceleration ramp (p1135).
• The drive remains in closed-loop speed control mode.
DCBRAKE - - In preparation
ENCODER - Internal/external
pulse disable
(p0491)
The fault reaction ENCODER is applied as a function of
the setting in 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.
Table 3-2 Fault reactions, continued
List PROFId-
rive
Reaction Description
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