25
EMR
3
- Truck Installations
EMR4 Truck Installation
Wiring the Display Head
5.
Attach each wire (no polarity) of the 2-conductor temperature probe and/or ESS switch cable(s) where shown
on the terminal block label.
6.
Tie wrap the IB, ESS switch, and temp probe (if installed) cables to the Pulse Encoder mounting base.
7.
For transfer Interlock applications, attach the two wires in the switch cable where shown on the terminal block
label and tie wrap the cable to the pulse encoder’s mounting base.
8.
Replace the Display Head cover and screw in the four cover retaining bolts just enough to hold them in (the
cover will be removed later for system calibration).
9.
Using the tie wraps from the installation kit, attach the 4-wire cable from the Display Head to the Interconnect
Box along the inside of the truck frame, to existing piping, or to the reel motor cable back to the cab. Avoid
sharp bends and placements where vibration might wear through the cable. Allow ample cable length to
compensate for tilt-cab trucks and to avoid putting additional stress on the assembly. Running the cable
through a split loom or tubing will offer added protection from weather and abrasion. Use a rubber grommet or
cord grip to line the hole where cable passes through truck cab wall or floor. Tractor-trailer installations will
require detachable plugs, and either a separate tensioning device much like that used to protect air lines, or
perhaps attach the cable to one of the existing air lines with tie wraps.
10. Check continuity between the Display Head chassis and IB chassis through the vehicle frame. This resistance
must be less than 1 ohm.
Figure 20. Display Head Cable Connections
ENS1J-489
EN
S1J
-48
9
-L00100
-L
001
00
BOURNS
BO
URN
S
VR ENCO
DER
VR
EN
CO
DER
P/N
P
/N
331884-001
331
884
-00
1
331933-00133
19
33
-0
01
I.S.
I.S.
Intrinsically-safe inputs from
Interconnect Box, emergency stop switch,
interlock switch, temperature probe,
and optional series 8452 remote pulser
Route cables as shown to
avoid interference with flexible
encoder shaft. Use tie wraps
to attach cables to base.
Pulse encoder
Optional keypad
Encoder shaft
spring
C&C
Jumper
Display head
terminal block
Attach optional remote
pulser, temperature probe,
interlock switch, IB cable and
ESS switch cable shields to
grounding lug on base.
9/64” (3.5mm) max.
Note: Maximum screwdriver
size for attaching wires to
terminal block.
C&C Switch - Removal of corner
bolt releases actuator lever of C&C
switch allowing entry into C&C Mode
#6 Self tapping
screws (3)
Rubber gasket (1)
INTERCONNECT BOX
1000 RPM ENCODER
OPTIONAL KEYPAD
TEMP PRB
INTERLOCK
STOP SW
C & C SW
BLK
GND
RED
PWR
YEL
+
YEL
GND
WHT
+
BLK
GND
GRN
CHA
WHT
CHB
BLK
GND
RED
+5V
WHT
+
BLK
GND
WHT
+
BLK
GND
ORA
KP8
BLU
KP7
YEL
KP6
GRN
KP5
WHT
KP4
BLK
KP3
RED
KP2
NOT
USED
GRN
IB-A
WHT
IB-B
