Connection of the Components
5.13 Voltage Protection Module (VPM)
Guide for the SINUMERIK 840D sl machine configuring
5-82 Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0
5.13 5.13 Voltage Protection Module (VPM)
5.13.1 Voltage Protection Module (VPM)
Introduction
The VPM (Voltage Protection Module) is used for the 1FE1 and 2SP1 motors and for motors
with an electromagnetic force (EMF) of 800 V to 2000 V to limit the DC link voltage at the
converter in a fault situation.
If the line voltage fails when the motor is running at maximum speed, or as consequence the
pulses at the converter are cleared, the motor returns high-voltage energy to the DC link.
The Voltage Protection Module (VPM) detects an excessive DC link voltage (> 800 V) and
short-circuits the three motor supply cables. The energy remaining in the motor is converted
into heat by the short-circuit between the motor supply cables.
Integration
● The installation must be performed in accordance with the VPM 120 or VPM 200
connection diagram.
● Above and below the device, clearance spaces of approx. 200 mm must be provided for
the cable routing.
● Any installation position is possible.
● No switching elements may be added to the U, V, W connection cables between the
drive, VPM and motor!
● The air intake temperature measured 10 mm below the device must not exceed 55 °C.
Caution
For non-observance and if the limit values specified for the technical data are exceeded
(see VPM user's guide), there is the danger of device overloading, damage to the device
and the impairment of the electrical safety.
Notice
The device must be equipped with a safety switching unit and may be used only for its
proper purpose. Other uses, for example, operational armature short-circuit, etc., are not
permitted.
The warning notices attached to the device must be observed.
An operation with VPM is possible only in conjunction with SINAMICS, SIMODRIVE
611digital, SIMODRIVE 611 universal HR/HRS and 1FE1/2SP1 motors. Shielded 6FX8
motor supply cables must be used with the VPM.
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