Specifications are subject to change without notice. No liability accepted for errors or omissions.
8
CONNECTION DIAGRAM
CONNECTION & INITIAL TESTING
1
Check input and output voltages of system, ensure that they match the equipment. All loads should be
isolated.
2
Check polarity of all wiring. Place temperature sensor probe near or on batteries.
3
Plug in ac input and turn power on. Both LEDs will light up after approx. 4 sec,
“BATTERY”
LED will
go out after another 10 sec (since there is no battery connected). DC output voltage should appear at both
load and battery outputs (ensure screws are tightened down on the connector block).
4
Turn off input power.
5
Connect battery.
6
Check that ECB (internal electronic circuit breaker) closes by shorting together the
BATTERY –ve
and
LOAD –ve
terminals briefly. You will hear a relay operate and both LEDs will light up. If this does not hap-
pen, there is a fault in the wiring or the internal battery protection fuse is ruptured (see Note 2 below). The
battery voltage will then appear at the load terminals and the
“BATLOW”
alarm relay energises. The
“MAINS
FAIL”
LED stays on for about 30 seconds.
7
Connect load wiring to
LOAD
+
and
LOAD
-
terminals.
8
Turn on ac power.
9
After the batteries are fully charged, check that the battery continues to power up the load when the
input power is turned off.
10
Connect power (10-30VDC) to the protocol converter, the red LED (“supply on”) will light up
11
Connect RS485 communication port on SRxxx i to MODBUS protocol converter (+PROTOCONMB).
The green LEDs on both the power supply and the converter will flash to indicate that the comms. are
working.
12
Connect the programming cable between the converter and your PC. It is better to use a computer
with a DB9 serial input as some serial to USB converters do not work. For instructions on the protocol
converter please refer to page 10.
1 2 4
PD+ PC
PD-
W G B
ALARMS
L+
L-
B+
B-
TEMPCO SENSOR FOR BATTERY
TX
RX
C
2
3
5
R
BK
W
RD
TD
SG
DB9
MC+ MC- MC
TO MODBUS
NETWORK
+
-
RS+
RS-
10-30VDC
INPUT
+PROTOCONMB
TO LOAD
TO BATTERY
AC MAINS
INPUT
PC
PROGRAMMING
PORT
RS485
RS232
RS485
RJ45
SR xxx i
RESET
DB9 - front of female
See http://www.n-tron.com/pdf/
cat5ecableschemes.pdf for
colour coding & pinout
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