Operation, Figure 1 block diagram -48v fed converter shelf – GE Industrial Solutions CPS2400U User Manual
Page 7
CPS2400U Upstream System – 19” Product Manual
CPS2400U
850028186 r04 December 2013
7
Figure 1 Block Diagram -48V Fed Converter Shelf
Operation
-48V power input is distributed in an A and B redundant fashion to each of the converter cards and the alarm card.
There are two +/-190V circuits on each converter card. The circuits both boost the voltage and limit the current as
prescribed by UL60950-21 and GR-1089-CORE.
Warning: Ground faults or short circuits on the output do not permanently disconnect the output. The converter
circuit tests the line every 4 seconds and will re-energize if the wiring fault is cleared.
A serial communication bus links each converter to an alarm card at the end of each shelf.
The alarm card provides major and minor form C contacts, manages the converters and relays information to an
optional system controller using Galaxy Protocol over an RS485 bus. Up to 24 shelves can be controlled and monitored
by one system controller. The controller is WEB and SNMP capable.
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