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Yokogawa ADM52C-S2 Digital Output Module

The Yokogawa ADM52C-S2, also cataloged as the ADM52C Digital Output Module, operates as a dedicated hardware component for discrete signal switching and pulse generation within Yokogawa DCS networks. The module provides 32 discrete transistor contact output channels, executing switching functions up to 30 VDC at 100 mA per point. Programmable output logic supports continuous states alongside pulse duration timing ranging from 0.1 to 7200 seconds.

Suffix Breakdown & Model Matrix

Suffix Code Option Specification
-S Standard Type
2 Style 2 Hardware Revision

Hardware Specifications

Parameter Specification
Model ADM52C-S2
Brand Yokogawa
Origin Japan
Weight 0.14 kg (0.31 lbs)
Dimensions 130 mm x 107.5 mm x 32.8 mm
Operating Temp 0 deg C to +50 deg C
Power Consumption 600 mA max at 5.0 VDC (Backplane bus)
Channel Density 32 discrete output points
Output Signal Type Transistor contact
Contact Rating 30 VDC, 100 mA (resistive/inductive load)
Pulse Width Range Adjustable from 0.1 to 7200 seconds
Isolation Voltage 1500 VAC (channel-to-system)

4-20 mA HART Loop Protocol & Channel-to-Channel Isolation

The ADM52C-S2 module resides alongside process I/O cards executing 4-20 mA HART loop protocol communications within CENTUM VP cabinet nodes. High-density galvanic isolation barrier circuits separate internal backplane logic from external field contact loops. This isolation suppresses ground loops and electrical switching transients, preserving measurement integrity across adjacent analog input channels and preventing thermal reference drift on cold junction compensation (CJC) circuits.

Frequently Asked Questions

Q: What power rail supplies the ADM52C-S2 module logic circuit?

A: The module draws power directly from the 5.0 VDC backplane bus, consuming a maximum current of 600 mA.

Q: How does the module handle inductive loads connected to its transistor outputs?

A: The solid-state transistor contacts are rated for up to 30 VDC and 100 mA for both resistive and inductive field loads.

Field Installation Guidelines

Insert the ADM52C-S2 into an available slot on the Field I/O (FIO) node base unit. Tighten top and bottom retaining screws to ensure stable mechanical grounding and backplane interface contact.

Route field contact cabling through separate wire ducts away from high-voltage AC power lines. Connect external 24 VDC / 30 VDC field power sources through fused terminal blocks to protect output transistors from direct short-circuit conditions. Connect cable shield drains directly to the cabinet single-point earth ground lug to mitigate electromagnetic noise coupling.

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