Table 4: 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
1
OCOM
n
Binary Output - 24 VAC Triac
(Internal Power)
Connects OCOM
n
to 24~ COM when
activated.
Internal Power Source:
30 VAC maximum voltage to load
0.5 A maximum output current
1.3 A at 25% duty cycle
40 mA minimum load current
See Guideline C in Table
Analog Output - Voltage Mode (0–
10 VDC)
10 VDC maximum output voltage
10 mA maximum output current
External 1k to 50K ohm load required
See Guideline A in Table
OUT
n
Binary Output 24 VAC Triac
Connects OUT to OCOM when
activated.
External Power Source:
30 VAC maximum voltage to load
0.5 A maximum output current
1.3 A at 25% duty cycle
40 mA minimum load current
See Guideline C in Table
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.
CONFIGURABLE
(Outputs)
OCOM
n
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
.
1
Table 5 defines cable length guidelines for the various wire sizes that may be used for input and output wiring.
21
FX-PCV1826/1832 Programmable VAV Box Controller Installation Instructions