Lenze 9200 Series - Page 55

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Parameter setting of the mains failure detection:
The following codes affect the drive properties in case of mains
failure:
C079
Proportional gain of the DC-bus voltage controller (V
z
-controller) (see
signal flow chart p.55)
C080
Integral-action component of the V
z
-controller
C228
Acceleration integrator for the set value of the DC-bus voltage
C229
Activation of mains failure detection
C229 = -1- : Mains failure detection activated
C236
V
setl
(V
z
-controller).
Ater the detection of a mains fialure and the activation of the DC-bus
control, the value of C237 is the set value of the V
z
-controller
C237
This code indirectly determines the possible speed decrease during a
controller cycle.
•
In drive configuration with several controllers and DC-bus
connection (one master drive and one or several slave
drives), the mains failure detection with DC-bus control may
only be activated for the master drive.