Siemens SINAMICS G130 - Page 406

Functions, monitoring, and protective functions
9.2 Drive functions
Inverter chassis units
406 Operating Instructions, 07/2016, A5E00331449A
This function controls an external contactor via output terminals, which then short-circuits the
motor through resistors when the pulses are canceled.
A prerequisite for the use of the external armature short circuit is the use of a permanent-
magnet synchronous motor (p0300 = 2xx).
NOTICE
Material damage when using motors that are not short-circuit proof
When using motors that are not short-circuit proof, activating the external armature short-
circuit braking can damage these motors.
• Only use motors that are short-circuit proof.
• Use suitable resistors for short-circuiting.
Note
Consequences of incorrect parameterization
In case of incorrect parameterization (e.g., induction motor and external armature short
-
circuit selected), fault
F07906 "Armature short circuit / internal voltage protection:
Parameterization error" is output.
Function diagram
FP 7014
Technology functions - External armature short circuit
Parameters
•
p0300:
Mot type selection
•
p1230
BI: Armature short
-circuit/DC braking activation
•
p1231
Armature short
-circuit/DC braking configuration
•
1: External armature short-circuit with contactor feedback signal
•
2: External armature short-circuit without contactor feedback signal
•
p1235
BI: External armature short
-circuit, contactor feedback signal
•
p1236
External armature short
-circuit, contactor feedback signal monitoring time
•
p1237
External armature short
-circuit, delay time when opening
•
r1238
CO: External armature short
-circuit state
•
r1239
CO/BO: Armature short
-circuit/DC braking status word