User Manual

SINAMICS G120 CU230P-2 Control Units
List Manual (LH9), 04/2014, A5E33838102B AA
299
2 Parameters
2.2 List of parameters
Description: Parameter for configuring the connection and disconnection of external motors to and from the line voltage.
Connecting external motors to the line voltage enables up to three additional drives to be controlled by the
technology controller in addition to the main drive. The complete system, therefore, comprises one closed-loop-
controlled main drive and up to three other drives, which can be controlled via contactors or motor starters. The
contactors or motor starters are switched by the converter's digital outputs (see also r2379).
Switching-in motor:
If the main drive is operated at maximum speed and the deviation at the technology controller input increases further,
the control will in addition connect external motors M1 through M3 to the line voltage. At the same time, the main
drive is ramped down to the closed-loop cascade control switch-in/switch-out speed (p2378) via the down ramp, so
that the total output power can be kept as constant as possible. During this time the technology controller is switched
off.
Switching-off the motor:
If the main drive is operated at minimum speed and the deviation at the technology controller input decreases further,
the control will disconnect external motors M1 through M3 from the line voltage. At the same time, the main drive is
ramped up to the closed-loop cascade control switch-in/switch-out speed (p2378) via the up ramp, so that the total
output power can be kept as constant as possible.
Value: 0: Closed-loop cascade control inhibited
1: M1 = 1X
2: M1 = 1X, M2 = 1X
3: M1 = 1X, M2 = 2X
4: M1 = 1X, M2 = 1X, M3 = 1X
5: M1 = 1X, M2 = 1X, M3 = 2X
6: M1 = 1X, M2 = 2X, M3 = 2X
7: M1 = 1X, M2 = 1X, M3 = 3X
8: M1 = 1X, M2 = 2X, M3 = 3X
Dependency: Refer to: p2372
Note: Selecting 2X means that a motor is switched in with twice the power (as opposed to 1X, which equates to the motor
power at the converter).
Description: Parameter for selecting the control mode for switching-in and switching-out external motors.
Selection 2 and 3 support selection options for automatically interchanging the motors, which are connected to the
line supply.
Value: 0: Fixed sequence
1: Closed-loop cascade control after absolute operating hours
2: Automatic replacement after continuous operating hours
3: Automatic replacement after absolute operating hours
Note: Re p2372 = 0:
Motor selection for switching-in/switching-out follows a fixed sequence and is dependent on the closed-loop cascade
control configuration (p2371).
Re 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.
p2371 Closed-loop cascade control configuration / Csc_ctrl config
Access level: 3 Calculated: - Data type: Integer16
Can be changed: T Scaling: - Dyn. index: -
Units group: - Unit selection: - Func. diagram: -
Min Max Factory setting
0 8 0
p2372 Closed-loop cascade control mode motor selection / Csc_ctrl mode
Access level: 3 Calculated: - Data type: Integer16
Can be changed: T Scaling: - Dyn. index: -
Units group: - Unit selection: - Func. diagram: -
Min Max Factory setting
0 3 0