Electrical connection
6.7 Connecting converters
1LE7 shaft heights 71 ... 315
Operating Instructions, 04/2022, A5E51689275A-AA
69
6.7
Connecting converters
NOTICE
Material damage caused by an excessively high supply voltage
Material damage can occur if the supply voltage is too high for the insulation system.
•
Observe the values in the following tables.
SIMOTICS motors can be operated with SINAMICS G converters and SINAMICS S converters
(uncontrolled and controlled infeed) when maintaining the permissible peak voltages.
The insulation system of SIMOTICS motors corresponds to the specifications laid down in IEC
60034-18-41 according to voltage stress category B (IVIC B = high stress).
Table 6- 5
Maximum voltage peaks at the motor terminals for line (DOL) motors, converter operation possible
Rated motor voltage
V
Maximum peak voltage at the motor terminals
Û
phase-to-phase
V
pk
Û
phase-to-ground
V
pk
DC link U
DC
V
≤ 500
V
1500
1100
750
Table 6- 6
Maximum voltage peaks at the motor terminals for motors specifically designed for converter operation (e.g.
VSD 10)
Rated motor voltage
V
Maximum peak voltage at the motor terminals
Û
phase-to-phase
V
pk
Û
phase-to-ground
V
pk
DC link U
DC
V
≤ 500
V
1600
1400
750
> 500 V to 690 V
2200
1500
1080
Depending on the step height, the voltage rise times for the individual voltage steps in the
line-to-ground voltage at the motor end of the cable must not fall below the following values.
Table 6- 7
Rise times as a function of voltage level
Step height
V
Minimum rise time t
r
ns
900
100
1050
200
1260
400
