Siemens SINAMICS G150 Manual page 1496

4 Faults and alarms
4.2 List of faults and alarms
A07908 Internal armature short-circuit active
Message value: -
Message class: Application / technological function faulted (17)
Drive object: VECTOR_G
Reaction: NONE
Acknowledge: NONE
Cause: The Motor Module signals that the motor is short-circuited through the power semiconductors (r1239.5 = 1). The
pulses cannot be enabled. The internal armature short-circuit is selected (p1231 = 4):
Remedy: For synchronous motors, the armature short-circuit braking is activated with binector input p1230 = 1 signal.
See also: p1230 (Armature short-circuit / DC braking activation), p1231 (Armature short-circuit / DC braking
configuration)
F07909 Internal voltage protection: De-activation only effective after POWER ON
Message value: -
Message class: Error in the parameterization / configuration / commissioning procedure (18)
Drive object: VECTOR_G
Reaction: NONE
Acknowledge: POWER ON
Cause: The de-activation of the internal voltage protection (p1231 not equal to 3) only becomes effective after POWER ON.
The status signal r1239.6 = 1 indicates that the internal voltage protection is ready.
Remedy: Not necessary.
This a note for the user.
A07910 (N) Drive: Motor overtemperature
Message value: %1
Message class: Motor overload (8)
Drive object: VECTOR_G
Reaction: NONE
Acknowledge: NONE
Cause: KTY or no sensor:
The measured motor temperature or temperature of motor temperature model 2 has exceeded the alarm threshold
(p0604, p0616). The response parameterized in p0610 becomes active.
PTC or bimetallic NC contact:
The response threshold of 1650 Ohm was exceeded or the NC contact opened.
Alarm value (r2124, interpret decimal):
- SME not selected in p0601:
11: No output current reduction.
12: Output current reduction active.
- SME or TM120 selected in p0601 (p0601 = 10, 11):
this is the number of the temperature channel leading to the message.
See also: p0604 (Mot_temp_mod 2/KTY alarm threshold), p0610 (Motor overtemperature response)
Remedy: - check the motor load.
- check the motor ambient temperature and cooling.
- check PTC or bimetallic NC contact.
- check the monitoring limits (p0604, p0605).
- activate/check the parameters of the motor temperature model (p0612, p0626 and following).
See also: p0612 (Mot_temp_mod activation), p0625 (Motor ambient temperature during commissioning), p0626
(Motor overtemperature, stator core), p0627 (Motor overtemperature, stator winding), p0628 (Motor overtemperature
rotor winding)
Reaction upon N: NONE
Acknowl. upon N: NONE
1496
SINAMICS G130/G150
List Manual (LH2), 04/2014, A5E03263479A