I/O Terminal blocks, ratings, and requirements - Facility Explorer - Part No. 24-10144-173 - FX-PCX2721-0 - Field Device - FX-PCX27 Expansion Input/Output Module

FX-PCX2721 Expansion Input/Output Module Installation Instructions

Product name
FX-PCX27 Expansion Input/Output Module
Document type
Installation Guide
Document number
Part No. 24-10144-173
Document revision
G
Revision date
2019-03-22
Table 1. I/O terminal blocks, functions, ratings, requirements, and cables
Terminal block label Terminal label Function, ratings, requirements Determine wire size and maximum cable length

UNIVERSAL

(Inputs)

+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) IN n

Note: Use 3-wire cable for devices that source power from the +15 V terminal.

IN n

Analog Input - Voltage Mode (0–10 VDC)

10 VDC maximum input voltage

Internal 75k ohm Pull-down

See Guideline A in Table 1.

Analog Input - Current Mode (4–20 mA)

Internal 100 ohm load impedance

Note: A current loop fail-safe jumper can be positioned to maintain a closed 4 to 20 mA current loop, even when the power to the expansion module is interrupted or off.

See Guideline B in Table 1.

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 1.

Binary Input - Dry Contact Maintained Mode

1 second minimum pulse width

Internal 12 V. 15k ohm pull up

See Guideline A in Table 1.

ICOM n

Universal Input Common for all Universal Input terminals

Same as (Universal) IN n

ANALOG

(Outputs)

OUT n

Analog Output - Voltage Mode (0–10 VDC)

10 VDC maximum output voltage

10 mA maximum output current

Required an external load of 1,000 ohm 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 Table 1.

Analog Output - Current Mode (4–20 mA)

Requires an external load between 0 and 300 ohm.

Note: The Analog Output (AO) operates in the Current Mode when connected to devices with impedances less than 300 ohm. Devices that exceed 300 ohm may not operate as intended for Current Mode applications.

OCOM n

Analog Output Signal Common for all Analog OUT terminals.