Siemens SINAMICS G120D Series Operating Instructions Manual page 182

Advanced commissioning
7.7 Application-specific functions
DC braking when the motor is switched off
1. The higher-level control switches off the motor (OFF1 or OFF3).
2. The motor brakes along the down ramp to the speed for the start of DC braking.
3. DC braking starts.
Settings for DC braking
Parameter
p0347
p1230
p1231
p1232
p1233
p1234
r1239
Table 7- 25
Parameter
p2100
p2101 = 6
The fault is assigned an index of p2100. Assign the same index of p2100 or p2101 to the fault and
fault response.
The inverter's List Manual lists in the "Faults and alarms" list the possible fault responses for every
fault. The "DCBRAKE" entry means that it is permissible to set DC braking as response for this par-
ticular fault.
182
Description
Motor de-excitation time (calculated after the basic commissioning)
The inverter can trip due to an overcurrent during DC braking if the de-excitation time is
too short.
DC braking activation (factory setting: 0)
Signal source to activate DC braking
0 signal: Deactivated
•
1 signal: Active
•
Configuring DC braking (factory setting: 0)
0 No DC braking
4 General release for DC braking
5 DC braking for OFF1/OFF3
14 DC braking below the starting speed
DC braking braking current (factory setting 0 A)
DC braking duration (factory setting 1 s)
DC braking start speed (factory setting 210000 rpm)
DC braking status word
.08 DC braking active
.10 DC braking ready
.11 DC braking selected
.12 DC braking selection internally locked
.13 DC braking for OFF1/OFF3
Configuring DC braking as a response to faults
Description
Set fault number for fault response (factory setting 0)
Enter the fault number for which DC braking should be activated, e.g. p2100[3] = 7860
(external fault 1).
Fault response setting (factory setting 0)
Assigning the fault response: p2101[3] = 6.
Converter with control units CU240D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34262100B AB