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DOK-INDRV*-HMV01******-IT01-EN-P
Rexroth IndraDrive Supply Units HMV01
NOTICE
The "ZKS" input activates the function "DC bus short circuit", when there
hasn't any voltage been applied and when there isn't any current flowing to
the input. This status occurs both in the case of wire break and when the 24V
supply fails.
When the 24V supply fails in applications in which energy does not only get
to the DC bus via the mains connection, but also via regeneratively operated
motors (e.g. following-on rollers), the ZKS stage converts this energy into
heat until it is destroyed ("sacrificing behavior").
Counter measures with such applications:
Buffer the 24V supply (e.g. by means of a UPS) to evaluate the monitor and
switch off the energy flow in the case of error.
Bosch Rexroth AG
Risk of fire caused by the "sacrificing behav‐
ior" of the ZKS stage!
43/81
Instructions for Use
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