Table 2: I/O terminal blocks, functions, ratings, requirements, and cables
Terminal block
label
Terminal
labels
Function, ratings, and
requirements
To determine wire size
and maximum cable
length
OCOM
n
Analog Output Signal Common:
All Configurable Outputs defined as
Analog Outputs share a common,
which is isolated from all other
commons except the Binary Input
common.
Binary Output Signal Common:
All Configurable Outputs defined
as Binary Outputs are isolated from
all other commons, including other
Configurable Output commons.
Same as (Configurable)
OUT
n
.
Note:
See Table 3 to determine wire size and cable lengths for cables other than the
recommended cables.
The following table defines cable length guidelines for the various wire sizes that may be used for
input and output wiring.
Table 3: Cable length guidelines for recommended wire sizes
Guideline Wire Size/Gauge and
Type
Maximum Cable Length and
Type
Assumptions
1.0 mm (18 AWG)
stranded copper
457 m (1,500 ft) twisted wire
0.8 mm (20 AWG)
stranded copper
297 m (975 ft) twisted wire
0.6 mm (22 AWG)
stranded copper
183 m (600 ft) twisted wire
A
0.5 mm (24 AWG)
stranded copper
107 m (350 ft) twisted wire
100 mV maximum
voltage drop
Depending on the
cable length and the
connected input or
output device, you may
have to define an offset
in the setup software
for the input or output
point.
1.0 mm (18 AWG)
stranded copper
229 m (750 ft) twisted wire
0.8 mm (20 AWG)
stranded copper
137 m (450 ft) twisted wire
0.6 mm (22 AWG)
stranded copper
91 m (300 ft) twisted wire
B
0.5 mm (24 AWG)
stranded copper
61 m (200 ft) twisted wire
100 mV maximum
voltage drop
Depending on the
cable length and the
connected input or
output device, you may
have to define an offset
in the setup software
for the input or output
point.
C
See Figure 7 to select wire
size/gauge. Use stranded
copper wire.
See Figure 7 to determine cable
length. Use twisted wire cable.
N/A
11
FX-PCV Programmable Variable Air Volume Box Controllers Installation Instructions
