Siemens SINAMICS G120D List Manual page 816

Faults and alarms
List of faults and alarms
Remedy: - check the parameterized supply voltage and if required change (p0210).
- check the line supply voltage.
See also: p0210 (Drive unit line supply voltage)
A06921 (N) Braking resistor phase unsymmetry
Reaction: NONE
Acknowledge: NONE
Cause: The three resistors of the braking chopper are not symmetrical.
Remedy: - check the feeder cables to the braking resistors.
- If required, increase the value for detecting dissymmetry (p1364).
F06922 Braking resistor phase failure
Reaction: NONE
Acknowledge: IMMEDIATELY
Cause: A phase failure for the brake resistor was detected.
Fault value (r0949, interpret decimal):
11: Phase U
12: Phase V
13: Phase W
See also: p3235 (Phase failure signal motor monitoring time)
Remedy: Check the feeder cables to the braking resistors.
F07011 Drive: Motor overtemperature
Reaction: OFF2 (NONE, OFF1, OFF3, STOP2)
Acknowledge: IMMEDIATELY
Cause: KTY:
The motor temperature has exceeded the fault threshold (p0605) or the timer (p0606) after the alarm threshold was
exceeded (p0604) has expired. The response parameterized in p0610 becomes active. The alarm is withdrawn if the
response threshold for wire breakage or sensor not connected is exceeded (R > 2120 Ohm).
PTC or bimetallic NC contact:
The response threshold of 1650 Ohm was exceeded or the NC contact opened and the timer (p0606) has expired.
The response parameterized in p0610 becomes active.
Possible causes:
- Motor is overloaded
- motor ambient temperature too high.
- Wire break or sensor not connected
Fault value (r0949, interpret decimal):
200: The motor temperature model 1 (I2t) signals an overtemperature (p0612.0 = 1, p0611 > 0, p0615 reached).
See also: p0604, p0605, p0606, p0612, p0625, p0626, p0627, p0628
Remedy: - Reduce the motor load.
- check the ambient temperature and the motor ventilation.
- check the wiring and the connection of the PTC or bimetallic NC contact.
See also: p0604, p0605, p0606, p0612, p0625, p0626, p0627, p0628
A07012 (N) Drive: Motor temperature model 1 overtemperature
Reaction: NONE
Acknowledge: NONE
Cause: The thermal I2t motor model for synchronous motors identified that the alarm threshold was exceeded.
See also: r0034 (Motor utilization), p0605 (Mot_temp_mod 1/2 threshold), p0611 (I2t motor model thermal time con-
stant), p0612 (Mot_temp_mod activation)
Remedy: - check the motor load and if required, reduce.
- check the motor ambient temperature.
- check the thermal time constant (p0611).
Note:
p0605 has no influence on the time up to an alarm being issued.
See also: r0034 (Motor utilization), p0605 (Mot_temp_mod 1/2 threshold), p0611 (I2t motor model thermal time con-
stant), p0612 (Mot_temp_mod activation)
3-816
© Siemens AG 2012 - 2013 All Rights Reserved
SINAMICS G120D List Manual (LH14), 01/2013