User's Manual

9 LS420 Universal User Manual V2.91 2003-01-21.doc
Chapter 2: Installation
2.1 Display Unit Installation
To ensure reliable radio communication between the display unit and the installed sen-
sors), the display unit antenna must not be in contact with metal and must have a direct,
clear line of sight to the antennae of all sensors.
2.1.1 Mounting the display
The display box may be installed either inside or outside the cab; though water can penetrate
the display box, the interior is fully potted and will function properly in up to 1 ft (30 cm) of water.
The mounting bracket is designed with three pivoting axes so that it can be mounted on the
dash, on either sidewall or on the ceiling of the cab.
One 3/8'' bolthole must be drilled to mount the display. The 3/8'' stainless bolt, washers and
stainless lock nut are supplied with the display. Choose a flat surface of at least 1-1/2'' in diame-
ter on both sides and where the back of the surface is accessible in order to tighten the nut. Drill
the hole with a 3/8'' bit. Place the display with the bolt through the hole. Mount the 2 large
washers and the lock nut behind and tighten sufficiently. If the nut is on the outside of the cab,
caulk with silicone between the large washer and the cab to prevent water entry. Orient the dis-
play to face the operator. Make sure the display antenna is not close to any metal surface and
has a direct line of sight to the antennae of all sensors.
For a boom truck with two operator stations, weld or bolt a pivoting arm in the center of the col-
umn facing the rear. The bracket should be above the rear ledge in order to pivot easily. Bolt the
display in place. Use a wing nut instead of the mounting nut in order to make the display more
easily removable.
2.1.2 Yellow Power Cable Wiring:
The connector of the yellow power cable is waterproof and well rated for external environments.
Simply connect the cable to the display and gently tighten the nut. Do not put a kink in the
yellow cable where it enters the connector; any bend in the cable at the base of the con-
nector must not be so severe as to break the internal connections where the cable meets
the connector.
The display can be connected to a power source between 10 and 28V positive or to a power
source between 12 and 28V AC. The display will automatically detect the voltage level and ad-
just itself; it is almost impossible to damage the unit when connecting.
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Black wire: ground. The ground connection must be bolted to the body of the machine.
Use a 1/4'' or 5/16'' bolt. The ground connection must be strong enough to sustain 3 Amp.
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Red wire: +12 or +24 volts. The red wire terminal must be connected to an accessory
source rated at least 10 Amps if the display is to be connected to a lockout system. The red
wire terminal must be connected to an accessory source rated at least 2 Amps if the display is
not to be connected to a lockout system. An accessory source is a terminal, a fuse or wire
providing fused voltage only when the crane or the ignition is on.
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White wire: optional lockout. If optional lockout is to be connected, the red wire must be
connected to an accessory source rated at least 10 Amps. Ideally, the white wire should be
connected to a Bosch relay coil and the other lead of the relay solenoid connected to the
ground. Alternately, the white wire may be connected directly to the valve or valves solenoid
lead and the other lead of solenoid connected to the ground. When operating properly, the
white wire will be energizing at the battery positive level. If no voltage is present, try to remove