Description
Hard-Numbers: Technical Specifications
- Protocol Support: IONet, IEEE 1588 PTP, TCP/IP
- Ethernet Ports: 4 × 10/100 Mbps RJ45
- Processor: 1066 MHz Intel EP80579 (quad-core)
- Memory: 256 MB DDR2 ECC RAM, 2 GB NAND flash
- Operating Temperature: -30°C to +65°C
- Isolation Rating: 1500 Vrms port-to-backplane
- Power Input: 18–30 VDC
- Power Draw: 1.1 A DC (typical), 30 W max
- OS: QNX Neutrino RTOS
- Environmental: Class I Div 2, Groups A-D; G3 conformal coating
- Weight: 2.4 lbs (1.1 kg)
IS420UCSBH4A
The Real-World Problem It Solves
Slower 600 MHz controllers can’t keep up with modern high-speed turbine and excitation algorithms. This 1066 MHz module eliminates logic bottlenecks and IONet communication lag.
Where you’ll typically find it:
- Primary/backup control in gas/steam turbine systems
- EX2100e excitation control systems
- LS2100e static starter control nodes
Bottom line: It delivers deterministic, high-speed control without fan or battery failure points.
Hardware Architecture & Under-the-Hood Logic
This is a self-contained, fanless controller with no local I/O. All processing is local; full galvanic isolation separates network, logic, and power domains.
- Receives process data from remote I/O via dual redundant IONet paths.
- Executes control, interlock, and SIS logic at 1066 MHz.
- Synchronizes state with redundant peer via IEEE 1588 PTP (≤100 μs).
- Writes outputs back to I/O packs and field actuators.
- Triggers front-panel LEDs for power, fault, link, and over-temperature status.
Field Service Pitfalls: What Rookies Get Wrong
Insufficient Heat-Sink ClearanceThis module runs hotter than lower-speed UCSB variants. Blocking fins causes thermal shutdowns and intermittent IONet faults.
- Field Rule: Mount vertically; maintain 50 mm clearance top/bottom. Ensure unobstructed airflow.
Non-Redundant IONet WiringRookies use only one Ethernet port. A single cable fault takes down the controller completely.
- Quick Fix: Terminate both IONet A and B to separate switches for full redundancy.
Firmware/ToolboxST MismatchLoading incorrect firmware locks the module in FAULT with no communication.
- Field Rule: Match firmware revision to ToolboxST version before power-up. Verify checksum post-load.
IS420UCSBH4A
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.
