LBC Series
3
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BCM.00432_AJ
L
FAN REPLACEMENT PROCEDURE
In case of fan failure any of four (three at LBC8000) fans placed on the front panel , can be replaced.
1)
Turn-off the whole device and by screwdriver PH2 simply remove four outer screws (signed by red circle - not those holding the ventilation grill)
on the front panel, which contains the failed fan and pull the panel out from the chassis (see Fig. 1).
2)
Disconnect the fan connector from the PC board by pressing the connector latch.
3)
Now by the same screwdriver remove four screws holding the grill together with fan on the panel.
4)
Replace the part for an original replacement part YVD.00969 (the left end panel) or YVD.00946.0 (the rest panels). Contact our Service Center.
5)
Keep the airflow direction from outside to inside. Proceed with the mounting in reverse order.
Life expectance: 70 000 / 50 000 hours (YVD.00969 / YVD.00946.0) @ 40 °C, continuous operation
Figure 1: Fan replacement procedure
NUCLEAR AND MEDICAL APPLICATIONS
Bel Power Solutions products are not designed, intended for use in, or authorized for use as critical components in life supp ort systems, equipment used in
hazardous environments, or nuclear control systems without the express written consent of the respective divisional president of Bel Power Solutions.
TECHNICAL REVISIONS
The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are
subject to change without notice.
OPERATION
First turn-on the battery breaker and only then turn-on the input AC voltage breaker. The charger will start to supply the load connected at the Consumer
output (Safe mode
–
constant voltage, e.g. 105 Vdc, the voltage depends on the LBC model). Inside, in series with this output, is connected an OR -ing
diode, so two or more LBC systems (preferably each one with his own separate battery) can be at the Consumer outputs connected in parallel, to supply
the load in redundancy.
30 seconds after the start-up the charger will perform the battery test by decreasing the output voltage. During battery test the output voltag e can drop
down to 80 V, if the battery is not connected. In this case after the test the charger will be set to the Safe mode. In the o ther case (battery OK), or if the
battery will be connected afterwards, the charger will start to work in a current mode and the voltage will be set to keep the maximal charging current,
value corresponds to the measured battery temperature. The actual state can be seen by LED-s on the upper front panel (control unit) or by
communication SW / GUI.
When no temperature sensor will be connected to the X3 connector, or any other fail will be detected, the charger will remain to work in the Safe mode (in
this case the battery will be not fully charged). In this mode the output voltage is set below the value allowed at Tmax (charging curve dependent, e.g.
105Vdc). The Safe mode is indicated by the LED, see Datasheet BCD.00821 for details. When no battery voltage sense will be co nnected to the X3
connector, the charger will still work normally, only the battery voltage symmetry will be not evaluated and reported by communication.
The charger does not have the possibility to disconnect the battery by undervoltage, when supplied from battery only. UVLO mu st be controlled by consumers
(typical turn-off should be less than 80 V, value depends on battery type).
