Table 3: I/O terminal blocks, functions, ratings, requirements, and cables
Terminal block label
Terminal label Function, ratings, requirements
Determine wire size and
maximum cable length
Analog Output - Voltage Mode (0–10 VDC)
10 VDC maximum output voltage
10 mA maximum output current
Requires an external load of 1,000 Ω or more.
Note:
The Analog Output (AO) operates in the
Voltage Mode when connected may not operate as
intended for Voltage Mode applications.
O
.
Note:
The Analog Output (AO) operates in the
Current Mode when connected to devices with
impedances less than 300 Ω. Devices that exceed
below 300 Ω may not operate as intended for
Current Mode applications.
ANALOG
(Outputs)
OCOM
n
Analog Output Signal Common
for all Analog OUT
terminals.
Note:
All Analog Output Common terminals
(OCOM
n
) share a common, which is isolated from
all other commons. One common screw terminal
point is provided for every two output screw
terminal points.
See Guideline
C
in Table .
OUT
n
Binary Output - 24 VAC Triac
Class 2, 24 V, 500 mA
(External Power Source)
Connects OUT
n
to OCOM
n
when activated.
External Power Source Requirements:
30 VAC maximum output voltage
0.5 A maximum output current
1.3 A at 25% duty cycle
40 mA minimum load current
BINARY
(Output)
OCOM
n
Binary Output Common
(for OUT
n
terminal)
Note:
Each Binary Output Common terminal
(OCOM
n
) is isolated from
all
other commons,
including other Binary Output Common terminals.
See Guideline
C
in Table .
Analog Output - Voltage Mode (0–10 VDC)
10 VDC maximum output voltage
or more.
See Guideline
A
in Table
OUT
n
Binary Output - 24 VAC Triac
(External Power Source
only)
Connects OUTn to OCOMn when activated.
External Power Source Requirements:
30 VAC maximum output voltage
0.5 A maximum output current
1.3 A at 25% duty cycle
40 mA minimum load current
See Guideline
C
in Table
CONFIGURABLE
(Output)
OCOM
n
Analog and Binary Output Signal Common
All
Configurable Outputs (COs) defined as Binary Outputs
are isolated from all other commons, including other CO
commons.
Same as (Configurable)
OUT
n
FAC4911 Advanced Application Field Equipment Controller Installation Guide
9