EMR3 Truck Installation
Installing the Interconnection Box (IB)
26
Figure 20. Pulse encoder and keypad installations
Installing the Interconnection Box (IB)
The following information is for general reference and is not intended to replace recommended National Electric
Code (NEC) procedures. It is important for the installer to understand that electrical equipment and wiring located
in Class I, Division 1 and 2 installations shall comply with the latest appropriate articles found in the National
Electric Code (NFPA 70) and other applicable code requirements.
1.
The physical dimensions of the Interconnection Box (IB) are shown in Figure 21. The IB is installed in the
truck’s cab either under the seat, mounted on the wall inside the cab, mounted to the passenger side of the
“dog house” in cab-over trucks, or mounted to a custom-made bracket that can also support the optional
printer. Use four, 3/16” (4 mm) bolts to mount the IB to the mounting surface. In the event of limited access,
the front cover of the IB can be completely removed rather than swung open, by removing four #15 Torx
screws. Put the excess coils of cable under the seat or clamp them to the IB mounting stand.
2.
Table 7 and Figure 22 show IB Power Side terminal wiring connections. Use Power Side knockouts (left side
of IB) for all cables attaching to this terminal block.
emr\emopwir3.eps
Terminal
11
12
13
14
Wire Color
Red
Black
White
Green
Signal
+5V
GND
CHB
CHA
Terminal
02 KP2
03 KP3
04 KP4
05 KP5
06 KP6
07 KP7
08 KP8
Wire Color
Red
Black
White
Green
Yellow
Blue
Orange
Pulse Encoder Cable Connections
Keypad Cable Connections
Display assembly
terminal block
Flexible encoder
spring
Pulse encoder
retaining washer
and nut
Pulse
encoder
Chassis Ground - attached to saddle
clamp and Display Head terminal 1
CGND as shown
Pulse encoder
mounting base
Route cables as
shown to avoid
interference with
flexible shaft.
Use tie wraps to
attach cables firmly
to mounting base
#6 Self tapping
screws (3)
Optional
keypad
Rubber gasket (1)
01 CGND
02 KP2
03 KP3
04 KP4
05 KP5
06 KP6
07 KP7
08 KP8
09 AS-
10 AS+
11 +5V
12 GND
13 C
HB
14 C
HA
15 PTR
16 GND
17 CCS
18 GND
19 ESS
20 TP
21 TP
22 MF-A
23 MF-B
24 PWR
25 GND
26 IB-B
27 IB-A
9/64" (3.58 mm)
max
Note Maximum screwdriver
size for attaching wires to
Display Head terminal block
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