Description
Hard-Numbers: Technical Specifications
- Protocol Support: PROFIBUS DP (Master), IONet 100Mbps, redundant Ethernet
- Port Count: 2× RJ45 IONet, 1× 9-pin D-sub PROFIBUS DP
- Data Rate: 100 Mbps (IONet), 9.6 kbps – 12 Mbps (PROFIBUS)
- Isolation Rating: 2500 VAC RMS field-to-backplane
- Power Requirements: 24 VDC (27.4–28.6 VDC), 0.18 A max draw
- Operating Temperature: -20°C to +55°C
- Processor: 32-bit RISC (BPPB), 8MB SDRAM, 16MB Flash
- Hazardous Rating: Class I Div 2, Zone 2, ATEX/IECEx
- Weight: 0.43 kg
- Dimensions: 160 × 80 × 32 mm
IS220PDIOH1A
The Real-World Problem It Solves
Legacy turbine systems use PROFIBUS DP drives and instruments that won’t natively talk to Mark VIe’s IONet. Custom gateways introduce latency, unreliability, and support headaches.
Where you’ll typically find it:
- Gas turbine control systems integrating PROFIBUS drives
- Steam turbine auxiliary systems with fieldbus transmitters
- Power plant retrofit projects connecting old PROFIBUS I/O to new Mark VIe
Bottom line: provides deterministic, isolated bridging between Mark VIe IONet and PROFIBUS DP networks.
Hardware Architecture & Under-the-Hood Logic
operates as an intelligent gateway with its own BPPB processor. Full galvanic isolation protects the backplane from PROFIBUS field faults.
- Receives control data from Mark VIe controller over redundant IONet.
- Local processor converts IONet packets to PROFIBUS DP master frames.
- Signals pass through 2500V isolation barriers to the PROFIBUS port.
- Manages PROFIBUS DP network: polling slaves, handling data exchanges.
- Converts slave responses back to IONet protocol for the controller.
- Runs continuous diagnostics: bus errors, timeouts, slave failures.
- Reports status via front LEDs and diagnostic registers.
Field Service Pitfalls: What Rookies Get Wrong
PROFIBUS Termination SkippedTechs forget to set the terminator at the cable end. Signal reflections cause intermittent dropouts and fault codes.
- Field Rule: Install 120Ω terminator at the last node; set DIP switch ON on this module if it’s the bus end.
Baud Rate MismatchSetting gateway speed different from slaves locks up the bus. FAULT LED flashes rapidly with no communications.
- Quick Fix: Verify all devices use the same baud rate (common: 1.5 Mbps or 12 Mbps). Match in Toolbox.
Shield Ground LoopsPROFIBUS shield grounded at both ends creates noise currents. Corrupted data and frequent bus resets occur.
- Field Rule: Ground shield only at the control cabinet; leave field devices ungrounded.
IS220PDIOH1A
Commercial Availability & Pricing Note
Please note: The listed price is for reference only and is not binding. Final pricing and terms are subject to negotiation based on current market conditions and availability.
