GE IS220PDOAH1B MARK VIe Discrete Output Pack

GE IS220PDOAH1B is a core discrete output module in the Mark VIeseries, designed specifically for hazardous locations (HazLoc). It is suitable for classified areas including Class I, Division 2, Groups A–D and Class I, Zone 2, Group IIC.With redundant architecture and rigorous safety certifications, it provides stable and reliable discrete signal output for industrial control applications.The module supports multiple terminal board combinations to accommodate various load types and installation requirements. It is widely used in turbine control, industrial automation, and other fields demanding high equipment safety and durability.Its electrical ratings, intrinsic safety design, and installation practices comply with international standards, making it one of the key components in GE industrial control systems.

1. Core Product Features

1.1 Hazardous Location Capability

• Certifications: UL E207685 certified, compliant with ANSI/ISA‑12.12.01‑2015 (US/Canada) and EN 60079 series (ATEX zones). Suitable for signal output in non‑hazardous and Class I hazardous areas.
• Temperature Range: Operating temperature: -30 to +65 °C (-22 to +149 °F), capable of withstanding extreme temperature fluctuations in industrial environments.

1.2 Flexible Terminal Board Configurations

The module must be used with approved terminal boards, supporting various load types and installation scenarios.Approved terminal boards include:

• Basic terminal boards: IS200TRLYH2E, IS200TRLYH3E, IS200TRLYH1F, IS200TRLYH2F
• Relay output terminal boards: IS200SRLYH1A, IS200SRLYH2A, IS400SRLYH1A, IS400SRLYH2A
• Special‑function terminal boards: IS40yWROBH1A, IS40yWROFH1A, IS40yWROGH1A, IS40yWROHH1A (with fuse protection)
• Coated version: Coated module IS221PDOAH1B must be used with coated terminal boards (e.g., IS201TRLYH2E) for enhanced resistance in harsh environments.

1.3 Key Electrical Specifications

1.4 Intrinsic Safety Design (Intrinsic Safety “ic”)

The module achieves intrinsic safety via the terminal board. Key parameters:

• Relay contact physical parameters:Vmax = 24 V, Imax = 261 mA, Pi = 6.26 W, Ci = 0 μF, Li = 0 mH
• Wiring requirements:Cable capacitance (Ccable) ≤ 60 pF/ft, cable inductance (Lcable) ≤ 0.2 μH/ft.Must ensure Ci + Ccable ≤ Ca and Li + Lcable ≤ La.

• Applicable devices: Can be used with non‑sparking (nA) equipment, supporting intrinsically safe connections for relay contacts and discrete outputs.

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2. Installation and Wiring Standards

2.1 Terminal Board Wiring Requirements

• Wire Size & Torque:Euro‑style terminal blocks: 24–12 AWG wire, screw torque 4 in‑lb (0.45 Nm).Barrier‑type terminal blocks: 22–12 AWG wire, screw torque 9.6 in‑lb (1.1 Nm).
• Conductor Material: Only copper conductors rated 90 °C (194 °F) or higher. For ambient temperatures above 60 °C, use conductors rated 105 °C (221 °F) or higher.
• Wiring Standards: Comply with Class I Division 2 / Zone 2 wiring practices: ANSI/NFPA 70 (US), Canadian Electrical Code (Canada), or IEC 60079‑25 (international).

2.2 Power and Load Connections

• Power Supply: Powered via GE‑specified power distribution boards (e.g., JPDS, JPDG) with current limited to 3.5 A max. Use certified switched‑mode power supplies (SMPS).
• Load Protection: Customer‑supplied contact wetting power must have independent overcurrent protection. Max. 15 A per conductor. In North America, use UL‑listed fuses ≤3 A or approved power supplies (e.g., Phoenix Contact QUINT‑PS series).
• Terminations: Field terminals connect directly to copper conductors with stripped insulation. Bare conductor connectors (e.g., ferrules) are allowed. No intermediate adapters permitted.

3. Product Updates and Compatibility

3.1 Version Update Highlights

• Terminal Board Expansion: Revision R adds support for WRO series terminal boards including IS40yWROBH1A, IS40yWROFH1A, with updated electrical ratings and terminal wiring details.
• Certification Upgrade: Classified location certifications in Appendices A–C are updated, adding HazLoc certifications for WRO series terminal boards.
• Document Compliance: Installation and maintenance shall follow manual GEH‑6725R (Revised September 2020). Compatibility with other Mark VIe modules (controllers, I/O) is officially validated by GE.

3.2 System Compatibility

• Controller Compatibility: Compatible with Mark VIe controllers (e.g., IS420UCSCH1, IS420UCSDH1) and IONet switches, with communication via standard cabling.
• Power Distribution: Supports JPDS/JPDG power systems, TMR (Triple Modular Redundant) control power, and dual I/O wetting power for high availability.

• Software Support: Configured and diagnosed via ToolboxST software (document GEH‑6703). Supports integration with Mark VIeS safety systems.

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4. Safety Warnings and Precautions

• Explosion Risk Prevention:Do NOT connect or disconnect the module, cables, or terminal boards while energized unless the area is confirmed non‑hazardous.Do NOT substitute any components, as this may invalidate Class I Division 2 compliance.
• Electrical Safety:De‑energize all circuits before wiring. Use certified test equipment rated for the applied voltage.Isolate terminal board wetting power from module power to avoid short circuits.
• Maintenance Practices:Only qualified, trained personnel may service the equipment.Follow intrinsic safety wiring requirements in GEH‑6725R.Periodically check terminal screw torque and conductor insulation integrity.

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