Description
GE IS220PDOAH1A – Discrete Output Pack
Product Overview
The IS220PDOAH1A is a discrete output pack developed by GE, belonging to the Speedtronic Mark VIe series for gas turbine control systems. It serves as a critical electrical interface between 1-2 I/O Ethernet networks and discrete output terminal boards, solving the problem of seamless signal transmission and equipment control in industrial automation. The module integrates a shared processor board and a dedicated acquisition board, controlling up to 12 relays and accepting terminal board feedback, ensuring stable and precise operation in harsh industrial environments like power generation and oil and gas sectors.
Technical Specifications — IS220PDOAH1A
| Parameter | Value |
|---|---|
| Product Model | IS220PDOAH1A |
| Manufacturer | GE (General Electric) |
| Product Type | Discrete Output Pack |
| Power | 24V DC, 3-pin power input |
| Communication / Protocol | Ethernet (10 BaseT / 100 BaseT X), dual RJ45 connectors |
| Operating Temperature | -40°C to +85°C |
| Mounting | Panel mount, directly pluggable to terminal boards |
| Dimensions (HxWxD) | 133.4 x 38.1 x 82.6 mm (5.25 x 1.5 x 3.25 inches) |
| Weight | 0.34 kg (0.75 lbs) |
| Typical Interfaces | DC-37 pin output connector, infrared diagnostic port, dual RJ45 |
| Compliance | CE, UL, CSA |

GE IS220PDOAH1A
Key Features and Benefits — IS220PDOAH1A
- Acts as a bridge between Ethernet networks and terminal boards, enabling reliable data transmission and equipment control in turbine systems.
- Supports control of up to 12 relays, compatible with both electromagnetic (TR LYH 1 B/C/D/F) and solid-state (TRLYH1E) relays for flexible application.
- Equipped with LED visual diagnostics and infrared serial communication, facilitating quick troubleshooting and local maintenance.
- Modular design allows easy integration into simplex, dual, or TMR configurations, adapting to different system redundancy requirements.
- Industrial-grade construction ensures stable operation in extreme temperatures and harsh industrial conditions, reducing downtime.
Related Models
- IS220PDOAH1B: GE discrete output pack, similar to IS220PDOAH1A with enhanced responsiveness for complex control tasks.
- IS220PDAOAH2A: Mark VIe series discrete output module, offering extended channel capacity for larger-scale systems.
- IS220PDOCH1A: GE discrete output pack with improved surge protection, suitable for high-voltage industrial environments.
- IS220PDRCH1A: Compact discrete output module, compatible with Mark VIe systems, ideal for space-constrained installations.
Installation and Maintenance — IS220PDOAH1A
- Installation: Directly plug the module into terminal board connectors; use threaded studs adjacent to Ethernet ports for mechanical security. For TMR configurations, install three modules side by side.
- Maintenance: Regularly check LED indicators for system status; use the infrared port for local diagnostics. Avoid exposure to excessive moisture or vibration to ensure long-term reliability.
- Compatibility: Works with TRly and SRly terminal boards, not compatible with DIN-rail mounted DRly boards.
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