DSE Model 5220 Automatic Mains Failure & Instrumentation System Operators Manual
34 057-012 5220 OPERATING MANUAL ISSUE 5.1 18/06/2007 AM
9.2.3 PLUG “C” 3 WAY (NOT FITTED)
9.2.4 PLUG “D” 4 WAY (OPTIONAL)
PIN
No
DESCRIPTION
23 RS485 port Common
24
RS485 port B. Use only screened 120Ω cable approved specifically for use in RS485 applications.
25
RS485 port A. Use only screened 120Ω cable approved specifically for use in RS485 applications.
26 Not used. Do not connect to this terminal.
9.2.5 PLUG “E” 8 WAY
PIN No DESCRIPTION
27 Mains loading relay, normally closed. Volts free contact to terminal 28.
28 Mains loading relay, normally closed. Volts free contact to terminal 27.
29 Generator loading relay, normally open. Volts free contact to terminal 30.
30 Generator loading relay, normally open. Volts free contact to terminal 29.
31 Mains L1 voltage monitoring input. Connect to mains L1 supply
32 Mains L2 voltage monitoring input. Connect to mains L2 supply. If using single phase AC system
do not connect to this terminal.
33 Mains L3 voltage monitoring input. Connect to mains L3 supply. If using single phase or two
phase AC system do not connect to this terminal.
34 Mains Neutral input. Connect to mains N supply. If using 3phase 3wire AC system, do not
connect to this terminal.
9.2.6 PLUG “F” 4 WAY
PIN
No
DESCRIPTION
35 Generator L1 sensing input. Connect to alternator L1 output.
36 Generator L2 sensing input. Connect to alternator L2 output. If using single phase only do not
connect this terminal.
37 Generator L3 sensing input. Connect to alternator L3 output. If using single phase only do not
connect this terminal.
38 Generator N sensing input. Connect to alternator N output.
9.2.7 PLUG “G” 5 WAY
PIN No DESCRIPTION
39 Generator L1 current transformer connection.
40 Generator L2 current transformer connection. If single phase is used do not connect this pin.
41 Generator L3 current transformer connection. If single phase is used do not connect this pin.
42 Generator current transformer common connection and CT earth connection.
43 Not used. Do not connect to this terminal.
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