Siemens SINAMICS G150 - Page 510

Functions, monitoring, and protective functions
9.2 Drive functions
Converter cabinet units
510 Operating Instructions, 07/2016, A5E03347396A
Activation via p1231 = 5 (DC braking for OFF1/OFF3)
DC braking is activated with OFF1 or OFF3
● If the motor speed ≥ p1234, the motor is braked down to p1234. As soon as the motor
speed is < p1234, the pulses are disabled and the motor is demagnetized.
● If the motor speed at OFF1/OFF3 is already < p1234, the pulses are immediately
inhibited and the motor is demagnetized.
DC braking is activated for the period set in p1233 (DC braking duration), then switched off.
When OFF1/OFF3 is prematurely canceled, then normal operation is resumed.
DC braking as emergency braking of a fault response remains active.
Function diagram
FP 7017
Technology functions - DC braking
Parameters
•
p0300:
Mot type selection
•
p0491
Motor encoder fault response: ENCODER
•
p1226
Threshold for standstill detection
•
p1230
BI: Armature short
-circuit/DC braking activation
•
p1231
Armature short
-circuit/DC braking configuration
•
4: Internal armature short-circuit/DC braking
•
5: DC braking OFF1/OFF3
•
14: DC braking below starting speed
•
p1232
DC braking, braking current
•
p1233
DC braking duration
•
p1234
Speed at the start of DC braking
•
r1239
CO/BO: Armature short
-circuit/DC braking status word
•
p2100
Changing the fault reaction, fault number
•
p2101
Changing the fault reaction, reaction