Rice Lake Combination System - Precision Loads PL9710 Indicator - Manual (Page 23)

PL9710 Installation Manual - Installation 19
10.0 Installation
The PL9710 indicator system includes the indicator, two transmitters with cables to connect to the load cells, one
single-piece cable for the truck (channel 1), a two-piece cable for the trailer (channel 2), and a power cable. Items
to be supplied by the operator include a plug and socket for the trailer (channel 2) cable, mounting hardware for the
indicator and transmitters, and an inline fuse holder with a 3-amp slow-blow fuse.
Before starting the installation, tape over the ends of the connectors to keep them free of dirt and grease. Small
plastic bags, like sandwich bags, could also be used for protection.
Plan the location of the indicator to minimize exposure to direct sunlight on the indicator face. Even though the
weight display has super-bright numbers, direct sunlight makes them more difficult to view.
The transmitters should be mounted in a location protected from road debris and sticks and branches. The typical
mounting areas are inside the frame rails or on the back-side of a crossmember. Remember to keep cable loops to a
minimum to avoid having them snagged on debris or tools.
10.1 Installing the Indicator
1. Find a suitable location where the indicator will
be convenient to the operator.
2. Remove the U-bracket from the indicator and use
it as a template to mark the drilling locations for
the four mounting screws.
3. Use four #10 or #12 screws to mount the
U-bracket.
4. Install the indicator back into the U-bracket and
verify that the indicator is in a desirable location.
5. Unplug the cable connector from the back of the
indicator by pulling straight away from the
indicator back. Set next to the indicator for later
installation.
10.2 Transmitter location
Once all load cells, transducers or load pins have been
installed, select a mounting location for the transmitter.
Typically all cable leads from the load cells and load
pins measure 30 inches (76 cm) in length. Air and
hydraulic pressure sensors have output connectors
mounted on the transducer enclosure and do not have
leads.
Standard transmitters have leads which measure as
follows:
• Single lead transmitter: 60 inches (152 cm)
• Dual lead transmitter: 48 inches (122 cm); 60 inches
(152 cm)
• Four lead transmitter: 144 inch leads x 4 (366 cm
each)
• Six lead transmitters: 144 inch leads x 4; 216 inch
leads x 2 (548 cm)
Locate the transmitter(s) in areas protected from
handling equipment, exposure to moving parts, road
hazards, pivoting parts, tree branches, etc. Cabling
should never be taut.
10.3 Mounting the transmitter
Mount the transmitter using the two 0.275 inch (7mm)
mounting holes in the case flanges. The installer may
drill a 1/4" hole in the chassis or a crossmember, using
through bolts and locknuts to mount the transmitter, or
the transmitter may be mounted to a separate plate (min
1/4" thick) which picks up existing chassis bolt holes.
Use 1/4" diameter mounting bolts. Do not over tighten
the mounting bolts.
10.4 Installing the Cables
Plug the transmitter leads into the load cell leads or
pressure transducer connectors. Run the two-wire cable
from the three-pin transmitter connector to the truck
cab or tractor/trailer connector. In routing the two-wire
cable, provide protection of the cable from moving
parts, road hazards, heat, corrosives, etc. Do not attach
the two-wire cable to air lines. Provide for a small
service loop in the two-wire cable at each end. Tie all
cables down using heavy duty cable ties at no greater
than 18 inch (45 cm) intervals.
The stainless steel transmitter is a sealed,
encapsulated and riveted unit and is NOT
field serviceable. Do not attempt to weld
on or open the transmitter, or to remove the unit's
connector or cable strain relief parts. Opening or altering
the unit will void warranty coverage.
10.5 Routing the Signal Cables
1. Route the two cables from the truck (channel 1)
transmitter to the two truck load cells. Note
which load cell (left or right) has the red-banded
cable. Secure the cables with nylon cable ties or
tape so the cables are protected and exposed
loops are minimized.
2. Similarly route and secure the two cables from
the trailer (channel 2) transmitter. As an aid in
troubleshooting, connect the red-banded cable to
the same side as on the truck.
Important