Converter states S1…S5c are dened in the PROFIdrive prole. The sequence control denes
the transition from one state to another.
Table 8-1 Converter states
The motor is switched o The motor is switched on
Current does not ow in the motor and the motor
does not generate any torque
Current ows in the motor and the motor gener‐
ates a torque
S1 The ON command and an OFF command
are active at the same time.
In order for the converter to exit the state,
you must deactivate OFF2 and OFF3 and
activate the ON command again.
S4 The motor is switched on.
S2 The converter waits for a new command to
switch on the motor.
S5a,
S5c
The motor is still switched on. The convert‐
er brakes the motor with the ramp-down
time of the ramp-function generator.
S3 The converter waits for "Enable opera‐
tion". The "Enable operation" command is
always active in the converter factory set‐
ting.
S5b The motor is still switched on. The convert‐
er brakes the motor with the OFF3 ramp-
down time.
Table 8-2 Commands for switching the motor on and o
ON
Jogging 1
Jogging 2
Enable opera‐
tion
The converter switches the motor on.
OFF1, OFF3
1. The converter brakes the motor.
2. The converter switches o the motor once it comes to a standstill.
The converter identies that the motor is at a standstill when at least one of the following
conditions is satised:
• The speed actual value falls below the threshold in p1226, and the time started in
p1228 has expired.
• The speed setpoint falls below the threshold in p1226, and the time subsequently
started in p1227 has expired.
OFF2
Inhibit opera‐
tion
The converter switches o the motor immediately without rst braking it.
Parameters
Number Name Factory setting
r0046.0…31 CO/BO: Missing enable signals -
p0857 Power unit monitoring time 10000ms
p0858[C] BI: Unconditionally close holding brake 0
p0860 BI: Line contactor feedback signal 863.1
Advanced commissioning
8.3Sequence control when switching the motor on and o
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 187