Fairbanks 9104 FB Omnicell - Manual (Page 17)

07/13 17 51325 Rev. 1
Section 4: Electrical Installation
4.1. ANALOG JUNCTION BOX
1. Introduction – The analog j-box should be installed on the vessel, and in an
easily accessible location, whenever possible. It is recommended that it be
installed in a vertical position.
2. Description – The analog j-box has four (5) terminal blocks to connect four (4)
load cells and one (1) for a cable that connects to the analog instrument. Load
cells are adjusted using adjusting potentiometers.
3. Installation –
a. Route the load cell cables so they will not be damaged or cut. The cables
should not be routed in areas where they become in contact with moisture
or exposed to chemicals, solvents, or heat sources. Do not cut any load
cell cable supplied with the load cell. Cutting the load cell cable will affect
the load cell’s temperature compensation. Excess cable should be coiled
and placed out of areas where it can be damaged.
b. Be sure to provide a drip loop in all cables to prevent liquids from wicking
down the cables towards the load cell or junction box.
c. If conduits are required to protect the cables, use flexible conduit and
conduit connectors at the load cell.
d. Use sense leads when the distance from the instrument to the junction box
exceeds 25 feet.
e. Boxes: The box has tabs for bolting to mounting brackets on the side of
the vessel. Attach the ground wire lug to one of the mounting bolt studs
and tighten securely to provide a good electrical ground.
f. Wiring: Cable used in all wiring must be a minimum of 24 AWG. Use
cable 20903 or equivalent.
Load cell wiring color codes
LCF-9104-xxZ
Black (-) Excitation
Red (+) Excitation
White (-) Signal
Green (+) Signal
C C C l l l e e e a a a r r r Shield