User Manual – Rev B
FCS Series II
3.4 AC Input Wiring – TB1
AC input connections are to be made directly to the input terminal block (TB1) of all units that
make up an FCS system. The input block is located on the lower right hand corner of the back
of the FCS18 chassis when facing the back. It is labeled “TB1” and “INPUT”. To connect AC
input wiring, remove the safety cover from the input junction box using a screwdriver to gain
access to the terminal block.
A Ground (earth) wire must be connected to the chassis of the AC power system using the
ground connection of the AC input connecter block. The mains source must have a current
rating equal to or greater than the input circuit breaker and the input wiring must be sized to
satisfy the
cable elect
qualified ele
r to installati . Note
that all
e size
he worst-case maximum current that may occur
under low line conditions.
ay also require different wire types and sizes.
Cable lengths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate
the vol
m the f
2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP
appli
rical codes. Consult a
ctrician prio
on
wires must b
d to accommodate t
Local electrical codes m
tage drop fro
ollowing formula:
CAUTION: Capacitors in the power source may hold a hazardous electrical charge
even if the power source has been disconnected from the mains supply. Allow
capacitors to discharge to a safe voltage before touching exposed pins of mains
supply connectors. Power modules need at least 10 Minutes to discharge to safe
levels before they can be removed.
California Instruments
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Summary of Contents for FCS Series II
Page 4: ...User Manual Rev B FCS Series II California Instruments 4...
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Page 89: ...FCS Series II 89 Figure 5 1 FCS System Block Diagram User Manual Rev B California Instruments...
Page 95: ...User Manual Rev B FCS Series II Figure 6 1 Calibration Setup California Instruments 95...
