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Electrical connection
6.7 Final checks
The insulation system of SIMOTICS machines corresponds to the specifications laid down in
IEC 60034-18-41 according to voltage stress category C (IVIC C = high stress).
Table 6-5
Maximum voltage peaks at the motor terminals for line (DOL) motors, converter operation possible
Rated motor voltage
V
≤ 500 V
Table 6-6
Maximum voltage peaks at the motor terminals for motors specifically designed for converter operation
Rated motor voltage
V
≤ 500 V
> 500 V to 690 V
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
6.7
Final checks
Before closing the terminal box/terminal base of the machine enclosure, check the following:
• Establish the electrical connections in the terminal box in accordance with the information
in this documentation.
• Maintain the air clearances between non-insulated parts as described in Chapter Minimum
air clearances. (Page 58)
• Avoid protruding wire ends.
• In order not to damage the cable insulation, freely arrange the connecting cables.
• Connect the machine corresponding to the specified direction of rotation.
• Keep the inside of the terminal box clean and free from trimmed-off ends of wire.
• Ensure that all seals and sealing surfaces are undamaged and clean.
64
Û
phase-to-phase
V
pk
1500
Û
phase-to-phase
V
pk
1600
2200
V
900
1050
1260
Maximum peak voltage at the motor terminals
Û
phase-to-ground
V
pk
1100
Maximum peak voltage at the motor terminals
Û
phase-to-ground
V
pk
1400
1500
Operating Instructions, 12/2023, A5E43212221A
DC link U
DC link U
1080
Minimum rise time t
r
ns
100
200
400
1PC134, 1PC136 crane motors SH 132 ... 315
DC
V
750
DC
V
750
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