Value: 0: Bypass deactivated
3: Bypass without synchronization
Dependency: The "Bypass" function is only available for induction motors.
Note
When the converter is switched on, the state of the bridging contactor is evaluated.
If the automatic restart is active (p1210 = 4) and both an ON command (r0054.0 = 1) and the bypass signal (p1266 =
1, configuration p1267.0 = 1) are still present during power up, the converter goes into "ready for operation and bypass"
state (r0899.0 = 1 and r0046.25 = 1) after power up, and the motor continues to run directly on the line.
The "bypass" function can only be switched off again (p1260 = 0) if the bypass is not active or the bypass function has
a fault.
The "flying restart" function must be activated (p1200).
r1261.0...11 CO/BO: Bypass control/status word / Bypass STW / ZSW
Access level: 2 Calculated: - Data type: Unsigned32
Can be changed: - Scaling: - Dynamic index: -
Unit group: - Unit selection: - Function diagram: -
Min:
-
Max:
-
Factory setting:
-
Description: Control and feedback signals of the bypass switch.
Bit field: Bit Signal name 1 signal 0 signal FP
00 Command switch motor - power unit Close Open -
01 Command switch motor - line supply Close Open -
05 Feedback signal switch motor - power unit Closed Opened -
06 Feedback signal switch motor - line supply Closed Opened -
07 Bypass command (from p1266) Yes No -
10 Bypass in process sequence Yes No -
11 Bypass enabled Yes No -
Dependency: The "Bypass" function is only available for induction motors.
Note
Control bits 0 and 1 should be interconnected to the signal outputs via which the switches in the motor feeder cables
should be controlled. These should be selected/dimensioned for switching under load.
p1262[0...n] Bypass dead time / Bypass t_dead
Access level: 2 Calculated: CALC_MOD_REG Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: -
Min:
0.000 [s]
Max:
20.000 [s]
Factory setting:
1.000 [s]
Description: Sets the dead time for non-synchronized bypass.
Dependency: The "Bypass" function is only available for induction motors.
Note
This parameter is used to define the changeover time of the contactors. It should not be shorter than the de-magnetizing
time of the motor (p0347).
The total changeover time for the bypass is based on the total of p1262 plus the OFF time for the relevant switch
(p1274[x]).
Parameters
7.3 Parameters
SINAMICS G120XA converter
502 Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
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