DSE Model 5520 Automatic Mains Failure Control and Instrumentation System Operators Manual
5520 OPERATING MANUAL ISSUE 1 04/02/05 AM
38
5 ELECTRICAL CONNECTIONS
Connections to the Module are via plug and sockets.
5.1 CONNECTION DETAILS
The following describes the connections and recommended cable sizes to the 8 plugs and sockets
on the rear of the Module.
5.1.1
PLUG
“A”
8
WAY
PIN
No
DESCRIPTION
CABLE
SIZE
NOTES
1
DC Plant Supply Input
(-ve)
2.5mm
2
DC Plant Supply Input
(+ve)
2.5mm
(Recommended Fuse 20A Max.)
3
Emergency Stop Input
2.5mm
Plant ve. Also supplies fuel & start
outputs. (Recommended Fuse 32A Max.)
4
Fuel relay Output
2.5mm
Plant ve from pin 3. 16 Amp rated.
5
Start relay Output
2.5mm
Plant ve from pin 3. 16 Amp rated.
6
Auxiliary Output relay 1
1.0mm
Plant ve.
5 Amp rated.
7
Auxiliary Output relay 2
1.0mm
Plant ve.
5 Amp rated.
8
Auxiliary Output relay 3
1.0mm
Plant ve.
5 Amp rated.
5.1.2
PLUG
“B”
11
WAY
PIN
No
DESCRIPTION
CABLE
SIZE
NOTES
9
Charge Fail Input/ Excitation
Output
1.0mm
Must NOT be connected to plant supply -ve.
10
Auxiliary Input 1
0.5mm
Switch to -ve
11
Auxiliary Input 2
0.5mm
Switch to -ve
12
Auxiliary Input 3
0.5mm
Switch to -ve
13
Auxiliary Input 4
0.5mm
Switch to -ve
14
Auxiliary Input 5
0.5mm
Switch to -ve
15
Auxiliary Input 6
0.5mm
Switch to -ve
16
Auxiliary Input 7
0.5mm
Switch to -ve
17
Auxiliary Input 8
0.5mm
Switch to -ve
18
Auxiliary Input 9
0.5mm
Switch to -ve
19
Functional Earth
2.5mm
Connect to system earth
WARNI
NG!
:
-
Do not
di
sconnect
pl
ug ‘
B’
when t
he gen-
set
i
s runni
ng.
Di
sconnect
i
on wi
l
l
open ci
rcui
t
t
he secondary of
t
he CT’
s and dangerous vol
t
ages
may then develop. Always ensure the gen-set is at rest before making or breaking
connections to the module.