Operation
Operation manual b maXX BM4100 (NWR)
Document no.: 5.04052.09
83
of 142
8
8.3 Power on switching frequency
The device may not be switched on and off as often as you like. Between two switch-on-
sequences there should be a certain time period (at least 2 min.), in order to protect the
devices/fuses (see
ZTechnical Data– from page 23).
From model code
BM4135-XXX-XXXXX-XX-3006-X-XXX-XXX
BM4145-XXX-XXXXX-XX-4008-X-XXX-XXX
BM4163-XXX-XXXXX-XX-6006-X-XXX-XXX
onwards there is no restriction of the switch-on frequency.
8.4 Notes for operation status „unregulated DC link voltage“
There is a new operation status „unregulated DC link voltage“ from firmware version FW
03.07 upwards.
The controller is able to block the IGBTs if a mains fault (but no mains power failure) oc-
curs. The device operates only with free-wheeling diodes. Therefore the DC link is not
regulated.
The function module DIO generates a signal as soon as the controller unit recognizes a
mains fault. In order that all power modules reduce the output power.
This status is displayed via the 7-segment display.
For further information refer to parameter manual b maXX 4100.
NOTE
In operation status „unregulated DC link voltage“ and if all 3 phases still available the
device can supply only max. 85
% of the nominal power. The device power supply
decreases to 35
% nominal power if a phase loss occurred.
A generating operation is in operation status „unregulated DC link voltage“ not pos-
sible.
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