Product Details:

FOXBORO AD202HJ is a rack-mounted 8-channel isolated analog output module for FOXBORO I/A Series DCS, a high-performance DCS output card built for process automation. This plug-in fieldbus module adopts conformal coated PCB design with reinforced shielding frame, protecting internal precision electronic circuits from vibration, dust and corrosive gas in harsh industrial control cabinet environments. Each channel is equipped with independent galvanic isolation, which can prevent single-channel faults from spreading to other channels and improve the stability of the whole control system. It is installed on the I/A series rack backplane and matched with dedicated terminal base for fast wiring and convenient maintenance.

This FOXBORO AD202HJ DCS output card receives digital control commands from the DCS main controller. It converts digital control instructions into standard 4~20mA analog current signals to drive field valve positioners and control valves. By adjusting the output current value, it changes the valve opening to regulate process variables including pressure, temperature, flow and liquid level. The module supports configurable 0~20mA signal range according to site requirements. Built-in channel self-diagnosis function can detect open circuit, short circuit and hardware abnormality, and send alarm information to DCS host system, helping maintenance engineers quickly locate faulty channels and reduce unplanned downtime. It supports hot swap operation, technicians can replace the module without shutting down the entire DCS system, which is essential for continuous production facilities.

Specifications:

Model: AD202HJ

Brand: FOXBORO

Product Type: 8-channel isolated analog output DCS module

System compatibility: FOXBORO I/A Series DCS

Output signal: 4 ~ 20mA DC, configurable 0~20mA

Channel: 8 channels with 1500V galvanic isolation

Accuracy: ±0.1% full scale at 25℃

Max loop load: 750Ω per channel

Power supply: 24VDC from rack backplane

Power consumption: Max 6W

Ambient working temperature: -40℃ ~ +70℃

Relative humidity: 5% ~ 95%, non-condensing

Installation: Rack mounting with dedicated terminal base

Environmental grade: G3 harsh environment, conformal coating

This analog output module has excellent EMC anti-interference performance and harsh environment adaptability, suitable for long-term continuous operation in heavy industrial control rooms. Its modular plug-in rack structure simplifies installation, inspection and component replacement, cutting maintenance workload and plant downtime. This DCS output card is widely used in oil & gas, chemical refining, power generation, pulp and paper industries. It can be deployed for new DCS automation project construction, and also serves as spare parts to replace aging analog output modules on legacy I/A DCS systems. Every FOXBORO AD202HJ module passes strict factory testing and calibration before shipment to guarantee reliable signal output performance for process automation.