Siemens SIMOTICS M-1FE2, Configuration Manual

Page: 122 / 162

Connecting
8.2 Electrical connection
SIMOTICS M-1FE2 built-in motors
120
Configuration Manual, 05/2021, A5E50494252B AB
Operation without voltage limiting
NOTICE
Danger of motor damage caused by exceeding the maximum speed
If you operate a motor with an EMF > 820 V without voltage limiting, then you must reduce
the maximum permissible speed to n
max inv
.
• Never operate the motor without voltage limitation.
• Do not exceed the maximum permissible speed.
Calculate the maximum permissible speed for operation without voltage limitation using the
following equation:
n
max inv
= 820 V • 1000 / k
E
• √ 2
n
max inv
/ rpm - maximum permissible speed without voltage limiting
k
E
/ V for 1000 rpm = voltage constant,
Voltage limitation with the Voltage Protection Module (VPM)
The Voltage Protection Module (VPM) is not included with the 1FE2 built-in motors and must
be ordered separately, see Catalog NC 62.
WARNING
Danger to life caused by the incorrect use of the VPM
The VPM can be used up to a maximum motor EMF of 2 kV. The use of motors with higher
EMC can cause death or severe injury.
•
Deploy the VPM only for motors with an EMF greater than 800 V to maximum 2 kV.
• The connection of motors with an EMF > 2 kV on the VPM is prohibited.
Integration and system prerequisites of the VPM
Integration
The VPM is located between the motor and the drive system. The maximum distance to the
drive system is 1.5 m.
No switching elements may be added to the U, V, W connection cables between the drive
system, VPM and motor.
Connect the VPM with shielded motor supply cables.
System requirements:
SINAMICS S120 booksize (6SL31xx-xxxxx-xxxx3)