Product Overview

The IS220PDIAH1B (Model: IS220PDIAH1B) is a high-density Discrete Input (PDIA) pack engineered for the GE Mark VIe control system. It serves as a sophisticated interface between field devices—such as limit switches, pushbuttons, and dry contact closures—and the central controller. Often cross-referenced as IS230SNCIH2A, this module is specifically optimized for gas and steam turbine control where sub-millisecond signal reliability is mandatory.

The IS220PDIAH1B (Part Number: IS220PDIAH1B) processes up to 32 independent channels, converting 24V DC field signals into digital logic data. Built with 1500 VDC galvanic isolation and redundant Ethernet communication paths, it ensures that field-side electrical noise or surges do not compromise the integrity of the Mark VIe control backbone. This makes it a critical component for power generation, marine propulsion, and heavy industrial automation requiring maximum uptime.

Detailed Technical Specifications

The IS220PDIAH1B module is built to the following engineering standards:

• Manufacturer: General Electric (GE)

• Model Number: IS220PDIAH1B

• Alternative Model: IS230SNCIH2A

• System Compatibility: GE Mark VIe & Mark VIeS Safety Systems

• Input Channels: 32 Isolated Discrete Inputs

• Nominal Input Voltage: 24 V DC

• Input Voltage Range: 18 to 32 V DC

• Typical Input Current: 7 mA per channel

• State Change Detection: ≤ 1 ms (High-speed response)

• Galvanic Isolation: 1500 VDC (Field-to-Logic)

• Communication Interface: Dual 100 Mbps Ethernet (IONet)

• Power Supply Input: 28 V DC nominal (18–32 V DC range)

• Power Consumption: 10 W (Typical)

• Operating Temperature: –30 °C to +65 °C (–22 °F to +149 °F)

• Humidity: 5% to 95% RH (Non-condensing)

• Dimensions: 225 mm × 167 mm × 55 mm

• Weight: 0.9 kg (2.2 lbs)

• Mounting Options: DIN-rail or direct rack mounting via Terminal Board