©
National Instruments Corp.
15
cFP-CB-1/2/3/4
Safety Guidelines for Hazardous Locations
The cFP-CB-
x
is suitable for use in Class I, Division 2, Groups A,
B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4
and Ex nA IIC T4 hazardous locations; and nonhazardous
locations only. Follow these guidelines if you are installing the
cFP-CB-
x
in a potentially explosive environment. Not following
these guidelines may result in serious injury or death.
Caution
Do
not
disconnect I/O-side wires or connectors
unless power has been switched off or the area is known
to be nonhazardous.
Caution
Do
not
remove modules unless power has been
switched off or the area is known to be nonhazardous.
Caution
Substitution of components may impair
suitability for Class I, Division 2.
Specifications
The following specifications are typical for the range –40 to 70 °C,
unless otherwise noted.
Installation
Terminal wiring
1
cFP-CB-1 and cFP-CB-3............ 16–26 AWG copper
conductor wire with 6 mm
(0.24 in.) of insulation
stripped from the end
cFP-CB-2.................................... 18–22 AWG copper
conductor with 7 mm
(0.28 in.) of insulation
stripped from the end
cFP-CB-4.................................... 16–28 AWG copper
conductor with 9 mm
(0.35 in.) of insulation
stripped from the end
1
Use only copper conductor wire unless you are working with a sensing device, such
as a thermocouple, that requires a different type of wire.
