Karel MS224, Инструкция по установке и обслуживанию

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Karel MS224 Installation & Maintenance Guide
Edition 3.2
8
Figure A-5
SPS224 Power Supply Module is attached to the 10-pin power connector on the
BPL224 Backplane (see Figure A-4) and fixed to the top front part of the metal
rack by a screw (see Figure A-3).
SPS224 Power Supply Module consists of a metal power rack, to which the
SPS224CR Power Card and the ring transformer are fastened. The mains
transformer is located on the SPS224CR Power Card.
SPS224 is a Switched Mode Power Supply (SMPS) operating at mains voltage.
Receiving 220 VAC over the mains, SPS224CR generates 5 VDC, -5 VDC, +12
VDC and -24 VDC for the system operation, for the accessories and for the ring
transformer. The ring transformer generates the 64 Vrms ring signal. Through the
10-pin power connector, the outputs of SPS224CR and ring transformer are
passed to the BPL224 Backplane, which carries them to the system modules. The
pin-out of the SPS224 – BPL224 connector on the backplane is as follows: