3:
Automatic replacement after absolute operating hours
Note
For p2372 = 0:
Motor selection for switching-in/switching-out follows a fixed sequence and is dependent on the closed-loop cascade
control configuration (p2371).
For p2372 = 1:
Motor selection for switching-in/switching-out is derived from the operating hours counter p2380. When switching-in,
the motor with the least operating hours is connected. When switching-out, the motor with the most operating hours is
disconnected.
For p2372 = 2:
Motor selection for switching-in/switching-out is derived from the operating hours counter p2380. When switching-in,
the motor with the least operating hours is connected. When switching-out, the motor with the most operating hours is
disconnected.
In addition, those motors which have been in operation continuously for longer than the time set in p2381 are
interchanged automatically.
If p2371 = 4 (selection of three identical motors), the switch is only performed between two motors, if the required input
power of one single external motor is sufficient for the actual operating point.
For p2372 = 3:
Motor selection for switching-in/switching-out is derived from the operating hours counter p2380. When switching-in,
the motor with the least operating hours is connected. When switching-out, the motor with the most operating hours is
disconnected.
In addition, those motors which have been in operation for a total time longer than that set in p2382 are interchanged
automatically.
For p2372 = 2, 3:
This automatic interchange (autochange) is only possible if the designated motor is not in operation. If all motors are
in operation, the interchange will not be possible and alarm A07427 appears.
Autochange mode is only possible if p2371 = 2, 4 (motors of the same size).
p2373
Closed-loop cascade control switch-in threshold / Csc_ctrl sw-in thr
Access level: 3
Calculated: -
Data type: FloatingPoint32
Can be changed: T, U
Scaling: PERCENT
Dynamic index: -
Unit group: 9_1
Unit selection: p0595
Function diagram: -
Min:
0.0 [%]
Max:
200.0 [%]
Factory setting:
20.0 [%]
Description:
Threshold value for the delayed switching-in or non-delayed switching-out of external motors connected to the line.
Motor switching-in is activated if the maximum speed is reached and the wait time in p2374 has expired.
Dependency:
See also: p2374
p2374
Closed-loop cascade control switch-in delay / Csc_ctrl t_in_del
Access level: 3
Calculated: -
Data type: Unsigned16
Can be changed: T, U
Scaling: -
Dynamic index: -
Unit group: -
Unit selection: -
Function diagram: -
Min:
0 [s]
Max:
650 [s]
Factory setting:
30 [s]
Description:
Additional delay time for connecting external motors to the line voltage after the system deviation of the technology
controller has exceeded the threshold value p2373 and the motor has reached the maximum speed.
Dependency:
See also: p2373
Note
If the deviation at the technology controller input exceeds the overcontrol threshold p2376, the delay time is bypassed.
Parameters
7.2 Parameter list
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
817
