EMR3 Terminal - Fueling Depot Installation
Installing the Interconnection Box
47
Use either the 4-wire cable supplied by V-R, P/N 846000-X00 or any cable or wiring with rated capacitance of
less than 100 picofarads per foot (per 304.8 mm). Note that conductor wire colors vary depending on the cable
manufacturer (caution: the Display Head to IB wiring illustrations in this section show wire colors in the V-R cable.
Alternate cables may have different wire colors).
Field wiring may be both above ground or
below grade.
WIRE LENGTH
Improper system operation could result in undetected potential environmental and health hazards if the Display
Head to IB wire runs exceed 1000 feet (304.8 m). Wire runs must be less than 1000 feet to be UL acceptable for
this application.
MOUNTING AND WIRING THE IB UNIT
1.
The physical dimensions of the Interconnection Box (IB) are shown in Figure 21 on page 28. The IB is
installed in the terminal - fueling depot office. Use four, 3/16” (4 mm) bolts to mount the IB to the mounting
surface.
2.
Table 13 and Figure 37 show IB Power Side terminal wiring connections. Use power-side knockouts (left side
of IB) for all cables attaching to this terminal block.
3.
Table 14 and Figure 37 show the IB intrinsically safe terminal wiring connections. Use intrinsically-safe side
knockouts (right side of IB under cover) for Display Head cable entries. The drain wire in each Display Head
cable must be connected to the adjacent chassis ground clamp.
4.
The printer
must
be within 6 feet (1.83 m) of the IB box.
All field wiring entering the IB box should be run as straight as possible from the conduit
entry knockout to their designated terminal connectors.
IB POWER FUSE
A replaceable power fuse is located on the IB box’s printed circuit board - 5A, Slo Blo, Type T 5x20mm, Littlefuse
#218005 (V-R P/N 576010-973).
SOLENOID VALVES
Figure 38 illustrates wiring examples when connecting dc or ac solenoid valves to the IB box.
