Procom SV01 - Manual (Page 2)

Data Sheet
SV01
Power Supply Module
The principle functions of the SV01 are illustrated in the following block diagram.
SV01
Block diagram SV01
The module receives the input voltage (nominal 48 V/60 V DC) through the
backplane of the basic unit (GG1 or GG2). The SV01 supplies the entire system with
an output voltage of +/-5 V through the backplane.
A group malfunction signal can be passed potential-free to the outside world over the
error relay with two change-over contacts.
The processor module CPU1 is monitored by the SV01. The CPU1 cyclically sends
status frames which are evaluated per default by the power supply module. If the
CPU1 becomes inoperational or defective then these frames are absent; the alarm
LED lights up and the malfunction signal relay drops out.
Signals can be passed to the DVS-21 over the two potential-free opto-coupler inputs
(e.g. for power supply monitoring).
The temperature on the card is determined using NTC and passed to the CPU1.
Optionally, the reading can be queried by the processor module.
For monitoring of low voltage the 48 V input voltage is measured on the SV01 and
the reading is also passed to the CPU1. There, as option, it can be evaluated.
The various operational statuses are displayed on the front plate LEDs.
OK2
OK1
+SV01 (0V)
-SV01 (-48V)
-OK1
KS 01
-OK2
48V DC
+5V
NTC
BUS
-48V -5V
SV mk1
SV rk1
SV ak1
SV mk2
SV rk2
SV ak2
+/- 5V DC
GND
-5V
U<
Date: 25.03.2009 Page: 2/4 Author: HS Document-No.: DB_SV01_2100_01
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