Model Interpretation

IS220: GE Mark VIe series distributed I/O module platform

PDOA: Discrete Output Pack (core function: relay-based discrete output control)

H: Hardware revision level

1A: Configuration variant, connector pinout, and firmware revision code

Technical Parameters

Electrical Specifications

Power Supply: 24 VDC (18–32 VDC) via backplane

Power Consumption: ~5 W typical (varies with load)

Output Channels: 12 isolated relay channels

Output Rating: 32 VDC / 3.15 A per channel

Isolation Voltage: ≥500 Vrms between channels and ground

Response Time: <1 ms (Ethernet command to output)

Communication Interfaces

Ethernet: 2 × 10/100 Mbps RJ45 ports (redundant I/O networks)

Protocols: SRTP, Ethernet/IP, IONet (Mark VIe proprietary)

Memory: 4 MB Flash (firmware) + 8 MB RAM (data)

Mechanical & Environmental

Dimensions (H×W×D): 82.6 × 38.1 × 133.4 mm (3.25 × 1.5 × 5.25 in)

Weight: ~0.34 kg (0.75 lbs)

Operating Temperature: -25°C to +70°C

Storage Temperature: -40°C to +85°C

Humidity: 5–95% non-condensing

Protection Class: IP20 (rack-mounted)

Certifications: CE, UL, CSA, HazLoc (Class I, Div. 2)

Front Panel Features

4 status LEDs: Power, Attention, Tx/Rx, Link

2 × RJ45 Ethernet ports

1 × 24 VDC power connector

Core Functions

Redundant Output Control: Controls up to 12 field devices via isolated relays; supports simplex, DMR, and TMR architectures.

Network Redundancy: Dual Ethernet ports enable seamless failover between I/O networks, eliminating single points of failure.

Feedback Monitoring: Accepts terminal board-specific feedback signals for closed-loop control and fault verification.

Built-in Protection: Integrates overload, overcurrent, and overtemperature protection to safeguard modules and field devices.

Hot-Swap Capability: Supports online replacement without system shutdown, maximizing uptime.

Applications

Power Generation: Gas/steam turbine control (fuel valves, starter motors, lubrication systems).

Oil & Gas: Offshore platforms, compressor stations, and hazardous area installations.

Industrial Automation: Petrochemical plants, steel mills, and critical machinery control.

Process Control: Boiler systems, water treatment, and manufacturing line automation.

Usage & Maintenance Instructions

Installation: Plug into standard Mark VIe I/O rack; secure with faceplate screws; ensure proper ventilation.

Wiring: Use shielded cables for Ethernet; separate low-voltage I/O from high-voltage wiring.

Configuration: Set network parameters via ControlST software; assign output channels to control logic.

Maintenance: Inspect connectors for dust/corrosion; check LED status; update firmware annually.

Compatibility: Works with six discrete output terminal boards (SRLY, TRLY series); compatible with Mark VIe IS200/IS210 series modules.