IS420PUAAH1A | GE Electric PROFIBUS-DP communication interface module

IS420PUAAH1A | GE Electric PROFIBUS-DP communication interface module

Product Function

The IS420PUAAH1A is a PROFIBUS-DP communication interface module for GE’s Speedtronic™ Mark VIe turbine control systems. It enables real-time data exchange between the Mark VIe controller and PROFIBUS-compatible field devices (sensors, actuators, drives) using industrial-grade protocols, featuring dual ports for redundant networking and diagnostic LEDs for fault isolation.

Product Specifications & Parameters

Series Information

Integrates with Mark VIe Safety & Control Platforms – key compatible hardware:

• Controllers: 
  • IS200ERPGH1A (Triple Modular Redundancy)
  • IS220UCSAH1A (Unitary Control)
• I/O Modules: 
  • IS220PDIAH1A (Digital Input)
  • IS220PAICH1A (Analog Input)
• Network Switches: 
  • IS200ESELH1A (Ethernet Switch)
• Software: 
  • ToolboxST™ for configuration
  • PROFIBUS GSD files (device integration)

Key Features

• Redundant Ports: Dual PROFIBUS-DP interfaces for ring/multi-drop topologies.
• Hot-Swappable: Live replacement without rack reboot.
• Diagnostic LEDs: Port status (RUN/BUSY/ERR), module health, and power indicators.
• Galvanic Isolation: Protects control system from ground loops.
• SIL 2 Certified: Suitable for safety-instrumented systems (SIS).
• Conformal Coating: Resists humidity, chemicals, and particulate contamination.

Role & Purpose

• Industrial Networking: Bridges Mark VIe controllers with PROFIBUS devices (e.g., flow meters, motor drives).
• Data Integration: Transfers I/O values, diagnostics, and process parameters at 12 Mbps.
• Fault Tolerance: Auto-switching to backup port during cable breaks.
• Cyber Security: Supports PROFIBUS profile for process automation (PA) encryption.

Applications & Use Cases

Technical Notes

• Wiring Configuration:

  PROFIBUS: Shielded twisted pair (A1/B1, A2/B2) → Terminating resistors at bus ends  
  Power: 24V DC (Terminal TB2: +24V, 0V, PE)  
  

• Diagnostic Indicators:

  LED	Color	Status
  PWR	Green	24V DC power OK
  RUN	Green	Module operational
  BUSY	Yellow	Data transmission active
  ERR	Red	PROFIBUS fault (cable/device error)
  PORT 1/2 STATUS	Green	Link active on respective port

• Configuration Rules: 
  • Max. 124 devices per PROFIBUS segment.
  • Cable length: ≤100m at 12 Mbps; ≤1200m at 93.75 kbps.
  • GSD File: Required for device integration (e.g., Siemens ET200, ABB drives).

Critical Installation Guidelines:

1. Always terminate bus ends with 220Ω resistors.
2. Ground shields at one end only to prevent ground loops.
3. Use PROFIBUS-compliant connectors with integral terminators.
4. Verify device addresses (1-125) to avoid conflicts.

Typical Control Rack Integration

Mark VIe Rack Example:  
Slot 1-2 : IS220PSCAH1A (Power Supplies)  
Slot 3   : IS200ERPGH1A (Controller)  
Slot 4   : IS420PUAAH1A (PROFIBUS Interface)  
Slot 5-6 : IS220PAICH1A (Analog Inputs)  
Slot 7   : IS220PDOAH1A (Digital Outputs)  

⚠️ Warning: Ensure 24V DC power is within ±10% tolerance. Over-voltage damages electronics.