I. Basic Information

Product Positioning

Hardware Architecture

1. Multi-channel Isolated Signal Conditioning Unit: Processes up to 6 groups of feedback signals from PDM power modules, filters electromagnetic interference from on-site high-power equipment to ensure stable and accurate sampling of power loop operating status.
2. Dual Redundant Ethernet Communication Unit: Two independent 100Mbps IONet Ethernet ports realize seamless hot switching of communication links, guarantee uninterrupted transmission of fault alarms and real-time operating data to the main control system.
3. Hardware ID Addressing & Fault Latching Unit: Automatically identifies the serial number of each connected power distribution module via electronic ID to accurately locate faulty branches; 8-channel on-board LED indicators realize local fast fault diagnosis and status display.
4. Backplane Power Supply & Protection Unit: Powered by 28VDC from the terminal baseplate, equipped with reverse connection, surge and overcurrent hardware protection; PCB adopts conformal coating to adapt to harsh industrial cabinet environments.
5. Compact Rack Mounting Structure: Standard guide rail locking installation, equipped with high-density D-SUB interface for centralized access of multi-channel feedback signals, suitable for dense modular layout in control cabinets.

Mounting Specifications

• Operating Power Supply: 28VDC (24~32VDC) supplied by JPDS/JPDM baseplate
• Maximum Access Channels: 6 PDM power distribution module feedback loops
• Communication: Dual 100Mbps IONet redundant Ethernet
• Status Indicator: 8-channel LED for power, run, communication and branch fault alarm
• Mounting: Guide rail embedded locking installation on system baseplate
• Dimension: 115mm × 130mm × 45mm
• Net Weight: 0.68kg
• Protection Class: IP20 (indoor cabinet installation only)
• Supporting Equipment: Mark VIe controller, JPDM/JPDS baseplate, JPDX power distribution module, shielded cables and Ethernet wires
• Commissioning Tools: GE Toolbox configuration software, multimeter, network cable tester, anti-static wristband

Supporting System

Supporting Hardware

Commissioning Software

Upper-level System

Typical Application Industries

Product Features

1. Centralized Multi-branch Power Monitoring: One module realizes unified condition acquisition of up to six independent DC power loops, simplifying cabinet hardware layout and reducing wiring failure points.
2. Dual-network Redundant High-reliability Communication: Hot standby Ethernet architecture eliminates single-point communication failure, meeting the safety reliability requirements of SIL critical control systems.
3. Accurate Fault Location & Local Visual Diagnosis: Hardware automatic addressing matches fault information with corresponding power branches, on-board LEDs realize rapid on-site troubleshooting without upper computer software.
4. Industrial Rugged Conformal Coating Design: Wide temperature range, vibration and EMC interference resistance, supporting 24/7 continuous stable operation with high MTBF value.
5. Plug-and-play Compatible Replacement: Standard hardware dimension and communication protocol enable direct in-situ replacement of faulty modules without modifying wiring and configuration parameters to minimize unit downtime.
6. Predictive Early Warning of Power Hidden Hazards: Monitors bus voltage drift, load fluctuation and insulation degradation in real time to realize advance fault pre-alarm and ensure long-term stable operation of unit control power supply.

II. Technical Specifications

2.1 Electrical Parameters

• Model: IS220PPDAH1A
• Rated Supply: 28VDC, operating range 24~32VDC
• Max Feedback Channels: 6 PDM module status loops
• Communication Speed: 100Mbps IONet, dual-link hot switching
• Sampling Accuracy: ±0.5%FS, fault response time ≤100ms
• Dielectric Withstand Voltage: 1500VAC/1min for signal input channels
• Built-in Protection: Reverse polarity, surge, overcurrent, ESD electrostatic protection
• Operating Mode: Signal acquisition, fault latch, remote data upload, local LED diagnosis (no direct trip output)

2.2 Mechanical Parameters

• Mounting: Guide rail locking installation
• Housing: Flame-retardant industrial plastic
• Interfaces: Dual RJ45 Ethernet, D-SUB shielded signal connector
• Indicators: 8 LED status lights for power, run, communication and branch faults
• Dimension: 115 × 130 × 45mm
• Net Weight: 0.68kg

2.3 Environmental Specifications

• Operating Temperature: -40℃ ~ +70℃
• Storage Temperature: -45℃ ~ +85℃
• Humidity: 5%~95%RH, non-condensing, no corrosive or conductive dust

III. Key Features

1. Full-range Centralized Monitoring of Control Cabinet DC Power System: Collects bus voltage, load current and online status of multiple power branches to realize visualized whole-process supervision of control power supply.
2. Rapid Detection & Dual-channel Alarm of Ground Fault and Power Abnormality: Latches fault records and triggers local LED and remote background alarms to quickly locate faulty power loops.
3. Seamless Redundant Ethernet Data Transmission: Two independent communication links ensure uninterrupted uploading of operating data and fault information to avoid monitoring blind spots caused by single-link failure.
4. Automatic Hardware ID Addressing for Precise Fault Branch Positioning: Prevents mis-maintenance caused by confusion of multi-loop fault information and improves troubleshooting efficiency.
5. Early Warning of Potential Power Supply Hidden Troubles: Identifies slow insulation degradation, voltage drift and abnormal load fluctuation in advance to realize predictive equipment maintenance.
6. Standard Supporting Component for Mark VIe Turbine Control System: Widely applied in new unit commissioning, old cabinet overhaul and safety upgrading of power distribution monitoring architecture for thermal power and petrochemical industrial units.

IV. Working Principle

V. Application Scenarios

1. Maintenance, spare part replacement and power system stability upgrading of Mark VIe turbine main control cabinets in thermal power combined cycle power plants.
2. Unattended remote fault early warning of control power supply loops for large turbo-generator units in petrochemical and natural gas compression stations.
3. Intelligent transformation of DC power monitoring system for old power plant control cabinets to realize accurate fault location and centralized data supervision.
4. Safety level upgrading of power supply monitoring architecture for SIL critical control systems to eliminate monitoring blind spots and improve unit operation safety.
5. Whole-plant centralized power asset management for multiple generating units to realize unified online monitoring of all control cabinet power loops.