DSE Model 5520 Automatic Mains Failure Control and Instrumentation System Operators Manual
5520 OPERATING MANUAL ISSUE 1 04/02/05 AM
43
CAUTION!:- Refer to Typical wiring Diagram for different wiring topologies.
WARNI
NG!
:
-
Do not
di
sconnect
pl
ug ‘
B’
when t
he genset
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 genset is at rest before making or breaking
connections to the module.
5.3.3
PLUG
“C”
9
WAY
PIN
No
DESCRIPTION
20
Magnetic pickup screen
21
Magnetic Input +ve. An AC signal from the magnetic ve for speed sensing.
22
Magnetic Input -ve. An AC signal from the magnetic pickup -ve for speed sensing.
23
SAE J1939 Engine ECU Screen
24
SAE J1939 Engine ECU H. For connection to the Engine ECU CanBus J1939 terminal H
25
SAE J1939 Engine ECU L. For connection to the Engine ECU CanBus J1939 terminal L
26
Unused
27
Unused
28
Unused
NOTE:- Screened cable must be used for connecting the Magnetic Pickup,
ensuring that the screen is earthed at one end ONLY.
NOTE:- Screened 120
impedance cable specified for use with CANBUS must be
used for both the SAE J1939 link and the Multiset comms link
5.3.4
PLUG
“D”
3
WAY
PIN
No
DESCRIPTION
29
RS485 SCREEN
30
RS485 B. For connection to other RS485 controllers in a multidrop RS485 communications
system.
31
RS485 A. For connection to other RS485 controllers in a multidrop RS485 communications
system.
NOTE:- Screened 120
impedance cable specified for use with RS485 must be
used.