Johnson Controls FAC4911 User Manual

I/O terminal blocks, ratings, and
requirements
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
+15 V 15 VDC Power Source for active (3-wire) input devices
connected to the Universal INn terminals.
Provides 100 mA total current
Same as (Universal) INn
Note: Use 3-wire cable for
devices that source power
from the +15V terminal.
Analog Input - Voltage Mode (0–10 VDC)
10 VDC maximum input voltage
Internal 75kΩ pull-down
See Guideline A in Cable and
wire length guidelines.
Analog Input - Current Mode (4–20 mA)
Internal 100 Ω load impedance. See Setting the Input
Jumpers.
Note: A current loop jumper must be in the Enabled
position to maintain a closed 4-20 mA current loop.
See UI current loop jumpers.
See Guideline B in Cable and
wire length guidelines.
Analog Input - Resistive Mode (60–600kΩ)
Internal 12 V. 15k Ω pull-up
Qualified Sensors: 0–2kΩ potentiometer, RTD (1k Nickel
[Johnson Controls sensor], 1k Platinum, and A99B Silicon
Temperature Sensor) Negative Temperature Coefficient
(NTC) Sensor
See Guideline A in Cable and
wire length guidelines.
INn
Binary Input - Dry Contact Maintained Mode
1 second minimum pulse width
Internal 12 V. 15kΩ pull-up
See Guideline A in Cable and
wire length guidelines.
UNIVERSAL
(Inputs)
ICOMn Universal Input Common for all Universal Input
terminals
Note: All Universal ICOMn terminals share a
common, which is isolated from all other commons,
except the SA bus common. One common screw
terminal point is provided for every two input screw
terminal points.
Same as (Universal) INn
Binary Input - Dry Contact Maintained Mode
0.01 second minimum pulse width
Internal 18 V. 3k Ω pull-up
INn
Binary Input - Pulse Counter/Accumulator Mode
0.01 second minimum pulse width
(50 Hz at 50% duty cycle)
Internal 18 V. 3kΩ pull-up
BINARY
(Inputs)
ICOMn Binary Input Common for all Binary Input (IN) terminals
Note: All Binary ICOMn terminals share a common,
which is isolated from all other commons.
See Guideline A in Cable and
wire length guidelines.
ANALOG
(Outputs)
OUTn 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 to devices with
impedances greater than 1,000 ohm. Devices that
drop below 1,000 ohm may not operate as intended
for Voltage Mode applications.
See Guideline C in Cable and wire
length guidelines.
FAC4911 Advanced Application Field Equipment Controller Installation Guide 7

Johnson Controls FAC4911 Specifications

General

Brand	Johnson Controls
Model	FAC4911
Category	Controller
Language	English