Table 2: Terminal blocks, functions, ratings, requirements, and cables
Terminal block label Terminal label
Function, ratings, requirements
Determine wire size and
maximum cable length
Binary Input - Dry Contact Maintained Mode
0.01 second minimum pulse width
Internal 18 V. 3k ohms pull-up
IN
n
Binary Input - Pulse Counter/Accumulator Mode
0.01 second minimum pulse width
(50 Hz at 50% duty cycle)
Internal 18 V. 3k ohms pull-up
BINARY
(Inputs)
ICOM
n
Binary Input Common
for all Binary Input (IN) terminals
Note:
All Binary ICOM
n
terminals share a common,
which is isolated from all other commons.
See Guideline
A
Analog Output - Voltage Mode (0–10 VDC)
10 VDC maximum output voltage
10 mA maximum output current
Required an external load of 1,000 ohms or more.
Note:
The Analog Output (AO) operates in the
Voltage Mode when connected to devices with
impedances greater than 1,000 ohms. Devices that
drop below 1,000 ohm may not operate as intended
for Voltage Mode applications.
OUT
n
Analog Output - Current Mode (4–20 mA)
Requires an external load between 0 and 300 ohms.
Note:
The Analog Output (AO) operates in the
Current Mode when connected to devices with
impedances less than 300 ohms. Devices that
exceed below 300 ohms 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 3.
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 3.
Cable and wire length guidelines
The following table defines cable length guidelines for the
various wire sizes that may be used for wiring low-voltage
(<30 V) input and outputs.
Note:
The required wire sizes and lengths for high-
voltage (>30 V) Relay Outputs are determined by the
load connected to the relay, and local, national, or
regional electrical codes.
FAC3611 Advanced Application Controller Installation Guide
7