Siemens SINUMERIK 840D sl - Page 167

Connection of the Components
5.13 Voltage Protection Module (VPM)
Guide for the SINUMERIK 840D sl machine configuring
Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0
5-83
Warning
In a fault situation, voltages as high as 2 kV can occur at chafed or damaged cables.
Depending on the speed of the motors, the motor terminal voltage of the 1FE1 motors can
attain values as high as 2 kV.
Connection example for VPM 120
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VLJQDOFRQWDFWIRUWKH930PXVWEHZLUHGRQWKH1&8RU1;DVVLJQHGWRWKH
GULYH$VHSDUDWHGLJLWDOLQSXWPXVWEHSURYLGHGIRUHDFK9307KHVHGLJLWDO
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Figure 5-40 Voltage Protection Module 120 connection