Rice Lake Combination System - Precision Loads On-Board Weighing Systems - Manual (Page 66)

62 Precision Loads On-Board Weighing Installation & Service Manual
6.4.1 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 (Figure 6-4): 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.
6.4.2 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.
6.4.3 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.
Cab Entry Point - Cab Over Vehicles
Tip the cab to access the main cable entry point and run the two-wire cable along the route of any existing cable in
this location, tie-wrapping as you go.
Cab Entry Point - Conventional Vehicles
Run the two-wire cable along the route of any existing cabling and through the existing cable access point.
Important
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.
6.4.4 Power Access
Access the auxiliary equipment power from either the fuse panel or the manufacturer's dedicated power source
connector. The truck manufacturer usually provides a dedicated power access point to be used by companies fitting
non-standard apparatus. Whenever possible, these must be used.
It is important that the power is taken from dedicated points like this and not randomly accessed from anywhere
else. If you are unsure where to access power from, contact the dealership where the vehicle was purchased.
Note
All electrical equipment should be protected with a 3 amp fuse fitted as close to the power source as possible.