Siemens SIMOTICCS A 1FU9, Operating Instructions Manual

Page: 72 / 126

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
System, converter-cable-electrical machine
Please observe the information in accordance with EN / IEC 60034-17 and EN / IEC 60034-25
regarding winding stress. For line supplies with operating voltages up to 690 V, the maximum
value of the voltage peaks at the end of the cable must not exceed twice the value of the
converter's DC-link voltage.
6.10 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 62)
• 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.
See also
Tightening torques for screw and bolt connections (Page 115)
Electrical connection
6.10 Final checks
1FU9
70
Operating Instructions, 07/2020, A5E46712792A