User's Manual

System integration
7.1 System requirements
Permissible voltages
The following table shows the permissible line voltages of TN line supply systems for the
motors.
Table 7- 1 Permissible line voltages of TN line supply systems, resulting DC link voltages and
converter output voltages
Permissible line
supply voltage
Resulting DC link voltage U
ZK
Drive output voltage (rms value)
U
amax
400 V 600 V (controlled)
528 V (uncontrolled)
425 V (controlled)
380 V (uncontrolled)
480 V 634 V (uncontrolled) 460 V (uncontrolled)
In combination with the drive system SINAMICS S120, the motors are generally approved for
operation on TN and TT networks with grounded neutral and for IT networks. Protective
equipment which will shut down the drive system in the event of a ground fault must be
provided for motors operated on IT systems.
In operation with a grounded external conductor, an isolating transformer with grounded
neutral (secondary side) must be connected between the supply and the drive system to
protect the motor insulation from excessive stress.
Requirements
● The power unit is selected depending on the motor current at torque M
0
and a speed 1
[rev/min] or according to the maximum motor current.
● The encoder system used must be harmonized with the particular application.
Drive system
Table 7- 2 Open-loop and closed-loop control systems for the SINAMICS S120 drive system
Closed-loop control Open-loop control
-- CU-320
SINUMERIK 840D sl NCU-7x0 / NX1x
SINUMERIK 840Di sl CU-320
SIMATIC CU-320
SIMOTION D4x0 /CX32
Note
Read the corresponding documentation about open-loop and closed-loop control systems.
1FW6 Built-in torque motors
104 Configuration Manual, 05/2009, 6SN1197-0AE00-0BP3