Input and Output Wiring
Guidelines
Table 3 provides information and guidelines about the
functions, ratings, and requirements for the controller
input and output terminals; and references guidelines for
determining proper wire sizes and cable lengths.
In addition to the wiring guidelines in Table 3, observe
these guidelines when wiring controller inputs and
outputs:
• Run all low-voltage wiring and cables separate from
high-voltage wiring.
• All input and output cables, regardless of wire size or
number of wires, should consist of stranded, insulated,
and twisted copper wires.
• Shielded cable is not required for input or output
cables.
• Shielded cable is recommended for input and output
cables that are exposed to high electromagnetic or
radio frequency noise.
• Inputs/outputs with cables less than 30 m (100 ft)
typically do not require an offset in the software setup.
Cable runs over 30 m (100 ft) may require an offset
in the input/output software setup.
Table 3: FX-PCG Terminal Blocks, Functions, Ratings, Requirements, and Cables
Determine Wire Size and
Maximum Cable Length
Function, Ratings, RequirementsTerminal
Label
Terminal Block
Label
Same as (Universal) INn
Note: Use 3-wire cable for
devices that source power from
the +15V terminal.
15 VDC Power Source for active (3-wire) input devices
connected to the Universal INn terminals.
Provides 100 mA total current
+15 VUNIVERSAL
(Inputs)
See Guideline A in Table 4.
Analog Input - Voltage Mode (0–10 VDC)
10 VDC maximum input voltage
Internal 75k ohm Pull-down
INn
See Guideline B in Table 4.
Analog Input - Current Mode (4–20 mA)
Internal 100 ohm load impedance
Note: Current loop jumpers are fail-safe to maintain a
closed 4 to 20 mA current loop, even when the power to
the controller is interrupted or off. See Universal Input
Current Loop Jumpers.
See Guideline A in Table 4.
Analog Input - Resistive Mode (0–600k ohm)
Internal 12 V. 15k ohm pull up
Qualified Sensors: 0-2k ohm potentiometer, RTD (1k Nickel
[Johnson Controls® sensor], 1k Platinum, and A99B Silicon
Temperature Sensor) Negative Temperature Coefficient
(NTC) Sensor (10k Type L, 10k JCI Type II, 2.252k Type
II)
See Guideline A in Table 4.
Binary Input - Dry Contact Maintained Mode
1 second minimum pulse width
Internal 12 V. 15k ohm pull up
Same as (Universal) INn
Universal Input Common for all Universal Input terminals
Note: All Universal ICOMn terminals share a common,
which is isolated from all other commons.
ICOMn
13FX-PCG16 General Purpose Programmable Controller Installation Instructions
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