List of faults and alarms
Faults and Alarms
3-1579
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
F07906
Armature short-circuit / internal voltage protection: Parameterization error
Drive object:
SERVO, VECTOR
Reaction:
OFF2
Acknowledge:
IMMEDIATELY
Cause:
The armature short-circuit is incorrectly parameterized.
Fault value (r0949, interpret decimal):
Low word: Motor data set number
High word: Cause:
1: A permanent-magnet synchronous motor has not been selected.
101: External armature short-circuit: Output (r1239.0) not connected-up.
102: External armature short-circuit with contactor feedback signal: No feedback signal connected (BI:p1235).
103: External armature short-circuit without contactor feedback signal: Delay time when opening (p1237) is 0.
201: Internal voltage protection: The maximum output current of the Motor Module (r0289) is less than 1.8 * motor
short-circuit current (r0331).
202: Internal voltage protection: A Motor Module in booksize format is not being used.
203: Internal voltage protection: The motor short-circuit current (p0320) is greater than the maximum motor current
(p0323).
204: Internal voltage protection: The activation (p1231 = 4) is not given for all motor data sets with synchronous
motors (p0300 = 2xx, 4xx).
Remedy:
Re cause 1:
- an armature short-circuit / voltage protection is only permissible for permanent-magnetic synchronous motors. The
highest position of the motor type in p0300 must either be 2 or 4.
Re cause 101:
- the contactor for the external armature short-circuit configuration should be controlled using output signal r1239.0.
The signal can, e.g. be connected to an output terminal BI: p0738. Before this fault can be acknowledged, p1231
must be set again.
Re cause 102:
- if the external armature short-circuit with contactor feedback signal (p1231 = 1) is selected, this feedback signal
must be connected to an input terminal (e.g. r722.x) and then connected to BI: p1235.
- alternatively, the external armature short-circuit without contactor feedback signal (p1231 = 2) can be selected.
Re cause 103:
- if the external armature short-circuit without contactor feedback signal (p1231 = 2) is selected, then a delay time
must be parameterized in p1237. This time must always be greater than the actual contactor opening time, as oth-
erwise the Motor Module would be short-circuited!
Re cause 201:
- a Motor Module with a higher maximum current or a motor with a lower short-circuit current must be used. The max-
imum Motor Module current must be higher than 1.8 * short-circuit current of the motor.
Re cause 202:
- for internal voltage protection, use a Motor Module in booksize format.
Re cause 203:
- for internal voltage protection, only use short-circuit proof motors.
Re cause 204:
- The internal voltage protection must either be activated for all motor data sets with synchronous motors (p0300 =
2xx, 4xx) (p1231 = 3) or it must be deactivated for all motor data sets (p1231 not equal to 3). This therefore ensures
that the protection cannot be accidentally withdrawn as a result of a data set changeover. The fault can only be
acknowledged if this condition is fulfilled.
F07907
Internal voltage protection: Motor terminals are not at zero potential after pulse can-
celation
Drive object:
SERVO, VECTOR
Reaction:
NONE
Acknowledge:
IMMEDIATELY
Cause:
The function "Internal voltage protection" (p1231 = 3) was activated. The following must be observed:
- when the internal voltage protection is active, after pulse cancelation, all of the motor terminals are at half of the
DC link voltage (without an internal voltage protection, the motor terminals are at zero potential)!
- it is only permissible to use motors that are short-circuit proof (p0320 < p0323).
- the Motor Module must be able to continually conduct 180% short-circuit current (r0331) of the motor (r0289).
- the internal voltage protection cannot be interrupted due to a fault response. If an overcurrent condition occurs dur-
ing the active, internal voltage protection, then this can destroy the Motor Module and/or the motor.
