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11-3
The use of varistors and RC modules as protective circuits is not allowed.
Varistors age and increase their locking currents. RC modules make
excessive demands of the switching capabilities of the Bb contact. This
leads to early failures of connected components and units.
Note:
Load limits of the Bb contacts must be maintained. Contactors
with AC excitation or those that exceed the load limits of the
effected contact elements (Bb contacts, etc.) can be controlled
with the use of auxiliary contactors.
CAUTION
Damages!
Before switching the device on again, wait at least
300 ms plus the fall-delay time of the mains
contactor (see page 11-12).
Control Circuits with E-Stop
Pre-requisite:
The E-stop input is available if the E-stop function has been activated in
the software (see firmware functional description).
Use the E-stop function if drive-internal error reactions must be activated
as quickly as possible as a result of the following events:
•
The emergency off button is pressed.
•
Power is shut down.
•
Error message from control (lag error monitor, emergency off actuated
by the control).
If the E-stop function is not used, then the drive-internal error reaction is
not triggered until the K1 contactor opens and, as a result, "undervoltage
in DC bus" is detected in the controller.
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(479) 422-0390
Summary of Contents for BZM 01.3-01-07
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