IS220PDIOH1A 336A4940CSP23_Ningde Androld Automation Equipment Co.,Ltd.

April 23, 2026

IS220PDIOH1A 336A4940CSP23

### 中文简要概括 IS220PDIOH1A（336A4940CSP23）是GE Mark VIe 控制系统的**混合数字I/O模块**，提供16路数字输入、8路数字输出，具备光电隔离与SIL3安全等级，主要用于燃气/蒸汽轮机的开关量采集、安全联锁及紧急跳闸控制。 ### English Summary IS220PDIOH1A (336A4940CSP23) is a **mixed digital I/O module** for GE Mark VIe control systems, with 16 digital inputs and 8 isolated digital outputs. It features opto-isolation and SIL3 certification, mainly used for discrete signal acquisition, safety interlocks and emergency trip control in gas and steam turbines.

Description

1. Basic Product Information

Model: IS220PDIOH1A
Part Number: 336A4940CSP23
Brand: GE (General Electric, now Emerson Automation Solutions)
Type: Mixed Discrete Digital I/O Module (PDIO) for Mark VIe/VIeS Control Systems
Compatible Systems: GE Speedtronic Mark VIe, Mark VIeS Gas/Steam Turbine Control Systems

2. Core Functions

Acts as the digital signal interface between the control system and field devices, integrating 16 isolated digital inputs and 8 isolated digital outputs to collect field signals (switches, limits, E-stops, valve positions) and drive control outputs (trips, alarms, solenoids, auxiliary equipment). Certified to IEC 61508 SIL 3 for critical safety functions (ESD, overspeed protection, safety interlocks). Features channel-level diagnostics, hot-swap capability, opto-isolation, and output readback confirmation for high-reliability operation.

3. Key Specifications

Digital Inputs (DI): 16 channels, 24VDC, opto-isolated (500VAC isolation), supports dry/wet contacts, sourcing/sinking, per-channel overcurrent/short-circuit protection
Digital Outputs (DO): 8 channels, configurable as Form C relays (2A/250VAC) or high-speed transistors, with output readback and channel isolation
Communication: Dual 100Mbps Ethernet, VME backplane, redundant communication support
Operating Temp: -20°C to +70°C, IP20 protection
Certifications: IEC 61508 SIL 3, IEC 61511, CE, UL
Installation: Standard slot, hot-swappable (redundant systems), LED status indicators, online diagnostics via ToolboxST

4. Applications

Widely used in gas/steam turbine control, combined-cycle power plants, oil & gas refining, offshore platforms, hydro turbine governing, industrial process safety interlocks for emergency trip, condition monitoring, valve control, alarm interlocking and other critical scenarios.

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