Description
Technical Specifications
- Processor: 1.6 GHz AMD G-Series dual-core (safety-locked)
- Memory: 2 GB DDR3 SDRAM, 4 GB industrial NAND flash
- Ethernet: 5× 10/100/1000 GbE (IONet Safety, UDH Safety)
- Comm.: IONet Safety, UDH, EGD, PROFINET, HSSL
- Safety: IEC 61508 SIL 2 / SIL 3 certified
- Redundancy: Simplex, Dual Redundant, TMR
- Power: 18–32 VDC (nominal 28 VDC), ~28 W
- Cooling: Fanless passive convection
- Temp: -30°C to +65°C (operating); -40°C to +85°C (storage)
- Dimensions: 168 × 150 × 55 mm
- Weight: ~1.3 kg
- Certifications: UL, CE, cULus, DNV, SIL 3, IEC 61000
- Software: ToolboxST (Safety Suite) – not ControlST
IS420UCSCH1A
Core Safety Function & Upgrades
is the dedicated safety controller in the UCSC family (S = Safety). It is purpose-built to execute SIS (Safety Instrumented System) logic and is not interchangeable with non-safety UCSCH models.
- Safety Isolation: Hardware/software separation from non-safety networks
- Dual-Core Lockstep: Cores run identical safety code; mismatch triggers fail-safe
- TMR Support: 3-unit voting for ultra-high availability (1oo2D, 2oo3)
- Certified: Pre-certified to SIL 3 – reduces project validation time
Typical Safety Applications
- Turbine Emergency Shutdown (ESD)
- Burner Management Systems (BMS)
- Compressor/Pump Station Safety
- Pressure Relief & Overpressure Protection
- Fire & Gas (F&G) System Logic Solvers
- Process Isolation & Emergency Depressurization
Critical Field Service Pitfalls (Safety Rules)
1. Software Misuse (Fatal Error)
- Rule: Use ToolboxST (Safety) only. Never use ControlST.
- Consequence: Wrong software disables safety certification; unit fails SIL tests.
2. Network Mixing (Violates Safety)
- Rule: Isolate Safety IONet/UDH from non-safety control networks.
- Fix: Use separate physical switches; no cross-connection to UCSCH controllers.
3. Redundancy Misconfiguration
- TMR requires 3 identical units: Must be same revision ().
- Rule: No mixing safety/non-safety controllers in a redundant group.
4. Hardware Tampering
- No jumpers/batteries: All safety config via ToolboxST.
- Rule: No hardware modifications; voids safety certification.
IS420UCSCH1A
Commercial 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.
