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The clamp module is used to determine that the only electrical connection
between the ground sense line and ground is through the sense line
clamp. This ensures that a short circuit in the cabling prior to the clamps
does not fool the system into thinking that the truck is grounded when in
fact it may not be.
The cables and clamps are used to make the actual connections to ground.
The proper procedure is to connect one clamp to a metal object which
looks like it should be grounded, and to connect the other clamp to
another metal object which also looks like it should be grounded. If they
are both grounded, then there will be an electrical connection between
them which the PosiGround will detect. If one or both of the objects is not
grounded, then there should not be any connection between them, so the
PosiGround will indicate that the truck is ungrounded. See Chapter 2 on
"Clamp Placement Guidelines".
Ground Cable Reels
Ground Sense Line
PosiGround Controller 672-H *
672-H Manual
GENERAL MECHANICAL ASSEMBLY
TRUCK GROUNDING CONTROL SYSTEM
GARNET
MADE IN CANADA
MODEL 672-H
GROUND RESISTANCE (OHMS)
OP: GROUND OPEN
SH: CABLES SHORTED
GO: GROUND GOOD
E: PTO ENGAGED
rE: CABLES REVERSED
d: PTO DISENGAGED
GROUND STATUS
PTO
*Note: Shutdown horn
warning available.
Hardware not included.
Clamp Module
Ground to a metal object
Page 7
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