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Runtoelectronic

Honeywell MC-GHAO21 51305869-175 16-Channel Analog Output Module
SKU: 51305869-175
In stock
Description

The MC-GHAO21 51305869-175 is a redundant model Analog Output (AO) Field Termination Assembly (FTA) designed to isolate up to sixteen 4-20 mA signals. These signals can drive current-to-pressure (I/P) transducers, position actuators, or any load with a resistance of 870 ohms or less. The FTA is associated with an Analog Output Input/Output Processor (IOP). Here’s a summarized breakdown of its functions and features:

  1. Fault-line Detection: If an open or short circuit occurs in the field wiring, the resistance sensed at the input to the Galvanic Isolation Module will be high. This enables the associated 4-20 mA Analog Output IOP to detect the open or shorted field circuit, reporting a soft failure to the user.

  2. Signal Connectors: The redundant FTA model has:

    • Two 50-pin connectors for interfacing with one or two IOPs.
    • A 20-pin connector for interfacing with an external HART multiplexer.
    • Two 2-pin power connectors for interfacing with the GI/IS Power Distribution Panel.

  3. Field Wiring Output Signals: The FTA generates 4-20 mA signals to control field devices, galvanically isolating them from other circuits. The load resistance for these signals should not exceed 870 ohms, and the dynamic impedance of the signal output is greater than 1 megohm.

  4. Calibration Terminals: Four screw terminals are provided on the FTA, consisting of two pairs for calibrating the primary and secondary IOPs. A touchpad is available to initiate the calibration procedure in the primary or secondary IOP.

  5. Indicators:

    • A green indicator on the FTA lights up when the primary IOP (A) is active.
    • Green indicators on each Galvanic Isolation Module illuminate when power is applied to the module.

  6. Current Consumption: Both FTA models consume 928 mA at 24 Vdc when all outputs have a 20 mA signal. The FTA’s power dissipation is 21.6 watts when all outputs provide 20 mA of current.

  7. Isolation and Safety: The FTA provides 250 Vac isolation between the safe-side and hazardous-side, with the Galvanic Isolation Module dividing these sides. Safety descriptions for the output of each Galvanic Isolation Module include:

    • Maximum voltage of -28 volts.
    • Maximum resistance of 240 ohms.
    • Maximum current of 116 milliamps.
    • Voltage limit (Um) of 250 Vrms AC or DC.

NEW AND ORIGINAL ITEM IN STOCK

WITH ONE YEAR WARRANTY

For inquiries, please contact sales7@cambia.cn.

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  • Quantity available: 10.
  • Warranty: 12 months.
  • Technical specifications, manuals, and data sheets available.

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