DSE Model 5520 Automatic Mains Failure Control and Instrumentation System Operators Manual
5520 OPERATING MANUAL ISSUE 1 04/02/05 AM
46
5.4 ELECTRICAL CONNECTIONS TO J1939 ENABLED CONTROLLERS
This section of the manual is intended to describe only the connections between the 55xx
controller and J1939 enabled controllers. All other connection details are described in the previous
sections.
NOTE:-
The CANbus specification, used by J1939, requires that a 120
terminator is
fitted to each end of the communications link. This termination resistor is fitted internally
into the 55xx controller so is not required externally. Ensure that the 55xx controller is the
‘
l
ast
’
devi
ce
on
t
he
communi
cat
i
ons
l
i
nk
wher
e
mor
e
t
han
one
devi
ce
i
s
connect
ed
t
o
t
he
engi
ne
ECU’
s
J1939
connect
or
.
5.4.1 CUMMINS ISB / ISBE
PLUG
“A”
8
WAY
55xx
PIN
No
55xx
DESCRIPTION
Cummins ISB OEM
Harness connector B
NOTES
4
Fuel relay
output
39
Key switch input.
5
Start relay
output
-
Connects directly to engine starter
solenoid.
6
Aux output 1
Use to control a 30A
external slave relay to
supply DC battery power to
01,07,12,13
Using 55xx select the relevant
engi
ne
and
conf
i
gur
e
55xx
‘
aux
out
put
1’
t
o
be
“Enabl
e
ECU”
PLUG
“C”
9
WAY
55xx
PIN
No
55xx
DESCRIPTION
Cummins ISB 9 pin
Deutsch connector
NOTES
SAE J1939 shield
Screen for the J1939 cable.
Connect at Cummins ECU end
only.
24
CANbus H
SAE J1939 signal
J1939 + Use only screened 120
impedance cable approved
specifically for use in CANbus
applications.
25
CANbus L
SAE J1939 return
J1939 - Use only screened 120
impedance cable approved
specifically for use in CANbus
applications.