Final Checks - Siemens SIMOTICS SD 1LE5 Operating Instructions Manual

Electrical connection

6.8 Final checks

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
≤ 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
6.8 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 66)
• 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.
• Correctly and professionally close unused openings in the terminal boxes. Observe the
information in this documentation.
• Observe the information on torques in this documentation.
72
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
1400
1500
Operating Instructions, 10/2020, A5E41454666A
DC link U
1080
Minimum rise time t
r
ns
100
200
400
1LE5, 1PC4 shaft height 315/355
DC
V
750