Description

GE IS220PDIOH1A

I. Product Overview

• Integrated DI/DO Control: Supports 16-channel isolated DI (24V DC dry contact/PNP/NPN) + 16-channel isolated DO (24V DC, output current 2A per channel). A single module enables both "equipment status acquisition and control command execution", replacing 2 independent modules and reducing the space occupied in the control cabinet by 50%.
• Rapid Response Performance: The DI channel has a response time of ≤50μs, and the DO command output delay is ≤100μs, meeting the requirements for high-speed equipment control (e.g., gas turbine valve start-stop).
• Full-Link Redundancy Design: Equipped with dual Ionet bus ports and dual backups for key circuits (MCU, power supply). When the main bus fails, it switches to the standby bus within 0.5ms without data loss; supports online hot swapping, ensuring no system shutdown during replacement.
• Strong Anti-Interference and Wide-Temperature Adaptability: Features a metal shielded housing (shielding effectiveness ≥50dB) + channel photoelectric isolation (2kVrms) to resist electromagnetic interference (e.g., around 10kV frequency converters). The operating temperature range is -20°C to 70°C, and the storage temperature range is -40°C to 85°C, making it suitable for harsh industrial environments.
• Intelligent Diagnosis and Software Configuration: Built-in 32-bit MCU, supporting DI anti-shake filtering (adjustable from 0.1ms to 100ms) and DO short-circuit protection (response ≤1μs). Parameters (signal polarity, output logic) can be configured and status monitored via GE Control ST software, eliminating the need for on-site hardwiring adjustments.

II. Technical Parameters

1. DI/DO Performance Parameters

2. Communication and Redundancy Parameters

3. Environmental and Reliability Parameters

III. Functional Features

1. Integrated DI/DO Design, Simplifying System Architecture

• Reduced Number of Devices: A single module replaces one 16-channel DI module + one 16-channel DO module. In a gas turbine control system, the number of modules is reduced from 8 to 4, cutting the space occupied in the control cabinet by 50% and reducing wiring work by 60%.
• Collaborative Data Acquisition: DI and DO data are processed by the same module, with a synchronization error of ≤100μs between status acquisition and command output. In a compressor system, after DI detects "pressure exceeding the threshold", DO immediately triggers the pressure relief valve, shortening the total response time from 30ms to 5ms and preventing equipment overload.
• Flexible Signal Adaptation: DI is compatible with dry contacts/PNP/NPN, and DO supports 2A high-current output (to drive solenoid valves). A chemical enterprise uses one module to control the start-stop of 10 motor channels (via DO) and monitor 10 fault signal channels (via DI) simultaneously, without the need for additional drive modules.

2. ≤100μs Rapid Response, Ensuring Control Accuracy

• DI 50μs Rapid Acquisition: The photoelectric coupler has a hardware response of ≤50μs, paired with 200MHz MCU parallel processing. In a gas turbine, after collecting the fuel valve limit signal, it feeds back to the controller within 0.8ms, reducing the valve start-stop error from ±3ms to ±0.3ms.
• DO 100μs Command Output: The DO drive circuit uses high-speed MOSFETs, with a command output delay of ≤100μs. After the emergency stop button of a steam turbine is triggered, DO cuts off the fuel supply within 1.2ms, enabling the unit to shut down safely within 3 seconds (traditional modules have a total delay of ≥5ms, resulting in a loss of over 500,000 yuan).
• Status Readback Verification: The DO output status is read back in real time (delay ≤50μs). In the auxiliary system of a nuclear power plant, the DO command is read back and confirmed immediately after output, avoiding command failure caused by actuator faults and increasing the safety interlock reliability to 99.99%.

3. Redundancy and Fault-Tolerance Design, Ensuring Uninterrupted Operation

• Dual Ionet Bus Redundancy: The main and standby buses transmit data synchronously. When the main bus fails, switching occurs within 0.5ms. In the steam turbine system of a thermal power plant, when the main bus is interrupted due to electromagnetic interference, the standby bus takes over seamlessly without data loss or unit load reduction (traditional modules require 1 hour of shutdown for recovery, resulting in a loss of over 600,000 yuan).
• Dual Redundancy for Key Circuits: Dual backups for MCU, power supply, and DO drive circuits. When a single circuit fails, it switches to the standby circuit within 0.1ms. When the DO drive of a metallurgical rolling mill fails, the standby circuit takes over immediately without rolling mill shutdown.
• Online Hot Swapping: Supports hot swapping of modules; redundant modules maintain DI/DO functions during replacement. In a power plant, replacing a faulty module takes only 8 minutes without affecting boiler control (traditional modules require 30 minutes of shutdown, resulting in a loss of over 200,000 yuan).

4. Strong Anti-Interference and Wide-Temperature Adaptability, Suitable for Harsh Environments

• Full-Link Anti-Interference: Metal housing shielding (≥50dB) + channel photoelectric isolation (2kVrms) + twisted-pair input/output. Around 10kV frequency converters (electromagnetic radiation 50V/m), the false trigger rate of DI signals is reduced from 0.1% to 0, and DO output remains stable.
• Wide Temperature Range of -20°C~70°C: Uses low-temperature resistant capacitors (starting at -40°C) and high-temperature ceramic chips (withstanding 125°C), enabling continuous operation in northern winter power plants (-18°C) and southern summer workshops (65°C) without attenuation of DI/DO response time.
• DO Short-Circuit Protection: When a DO channel is short-circuited (current ＞3A), the output is cut off within 1μs. When a sensor in an automobile factory is short-circuited, only the faulty DO channel is protected, while the other 15 channels maintain normal output (traditional modules may experience overall failure).

IV. Application Scenarios

1. Gas Turbine Valve Control System

• System Configuration: 1 unit of IS220PDIOH1A (16-channel DI: 8 channels of fuel valve limit, 8 channels of equipment fault; 16-channel DO: 8 channels of valve solenoid valves, 8 channels of alarm relays) + IS220PPROH1A main controller + Ionet bus.
• Operation Logic: DI collects valve status and fault signals in real time; the controller outputs DO commands to control valve start-stop based on parameters; automatically switches to the standby bus when the main bus fails.
• Value Proposition: Valve control error is ±0.3ms, reducing unit output deviation by 90%; annual shutdowns are reduced from 4 to 0, increasing power generation by over 1.2 million kWh.

2. Steam Turbine Fault Interlock System

• System Configuration: 2 units of IS220PDIOH1A (redundant configuration, each with 16-channel DI for safety signal collection and 16-channel DO for shutdown protection triggering) + Mark VIe controller.
• Operation Logic: Dual modules collect DI signals synchronously; the controller compares redundant data to ensure accuracy; when DI detects a fault, DO immediately triggers shutdown protection.
• Value Proposition: Fault response time is ≤5ms, avoiding equipment damage; the standby module takes over seamlessly when the main module fails, eliminating shutdown losses.