Siemens SINAMICS G120 Operating Instructions Manual page 355

● Temperature monitoring for the motor
The inverter evaluates the temperature sensor in the motor, also for line operation of the
motor.
● Disconnecting the inverter from the line supply
If for line operation of the motor, you disconnect the inverter from the line supply, the inverter
opens the K2 contactor and the motor coasts down.
To operate the motor on the line supply also for deactivated inverter, the higher-level control
must supply the signal for the K2 line contactor.
Setting parameters of the bypass function
Parameter
p0347
p1260
r1261
p1262
p1263
p1264
p1265
p1266
p1267
p1269
Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE
Motor protection with temperature sensor (Page 325)
Description
Motor de-excitation time
Bypass configuration (factory setting: 0)
0: Bypass is deactivated
3: Bypass is activated
Bypass control/status word
.00 1 signal: Close K1 inverter contactor command
.01 1 signal: "Close K2 inverter contactor" command
.05 1 signal: "K1 inverter contactor is closed" feedback
.06 1 signal: "K2 line contactor is closed" feedback
.07 1 signal: Bypass command (for p1266) is active
.10 1 signal: Bypass in the process operation is active
.11 1 signal: Bypass is enabled
Bypass dead time (factory setting: 1 s)
Changeover time of the contactor. Setting condition: p1262 > p0347
Bypass delay time (factory setting: 1 s)
Delay time for switching from line operation to inverter operation.
Bypass delay time (factory setting: 1 s)
Delay time for switching from inverter operation to line operation.
Bypass speed threshold (factory setting: 1480 rpm)
Speed threshold for switching to line operation.
BI: Bypass control command (factory setting: 0)
Signal source for the "Bypass" function control command
Bypass changeover source configuration (factory setting: 0000 bin)
Changeover to bypass mode via the speed threshold or the control signal.
.00 1 signal: Changeover for activation via the control command p1266
.01 1 signal: Bypass when reaching the speed threshold
BI: Bypass switch feedback
Signal source for contactor feedback of the contactor.
[00] K1 inverter contactor (factory setting: 1261.0)
[01] K2 line contactor (factory setting: 1261.1)
Advanced commissioning
6.36 Bypass
355