The Kongsberg RMP422Si is a RBUS remote I/O module purpose‑built for safety‑critical industrial applications, delivering 32 HART‑enabled analog input field channels with per‑channel software configurability, extended loop monitoring, and current leak detection. Certified for hazardous area Zone 2, it supports SIL 2 in single mode and SIL 3 in redundant 1oo2 architecture, combining high‑density signal acquisition, transparent HART communication, and robust diagnostics to simplify installation, boost system safety, and lower maintenance costs in marine, oil & gas, and process industries.
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Key Product Features
- Safety‑Certified PerformanceSIL 2 (single configuration) / SIL 3 (redundant 1oo2) for compliance with strict process safety standards; ATEX Zone 2 certified for safe operation in hazardous locations.
- 32‑Channel HART Analog Inputs32 independent field channels with online software configuration; supports 2/3/4‑wire 4–20 mA and 0–10 V analog inputs; transparent HART pass‑through for direct access to device variables and diagnostics.
- Advanced Loop & Channel DiagnosticsPer‑channel current leak detection, extended loop monitoring, short‑circuit protection, and comprehensive module self‑diagnostics to reduce unplanned downtime and simplify troubleshooting.
- Built‑In Reliability & ProtectionOver‑voltage protection, galvanically isolated RBUS RS485 interface, and configurable soft fail‑safe behavior; simple, safe firmware updates without compromising safety logic.
- Easy Installation & ServiceStatus LED for quick health checks; DIN‑rail vertical mounting; plug‑and‑play replacement; fully backward compatible as a spare part for RMP422S modules.
I/O & Signal Capabilities
- 32 configurable analog input field channels
- Per‑channel current leak detection & extended loop monitoring
- Internally or externally powered; short‑circuit proof
- Signal types: HART analog input (2/3/4‑wire, 4–20 mA, 0–10 V); up to 16 HART variables across 1–8 channels
- Configurable soft fail‑safe on outputs
Technical Specifications
Electrical
- Supply voltage: 24 VDC (18–31.2 V)
- Typical power consumption: 10 W
- Max total load: 16 A
- RBUS connectors: 2×9‑pin male D‑Sub (RS485, galvanically isolated)
- Power & I/O connectors: screw terminals, max. 2.5 mm²
- Analog input current: 0–24 mA, 300 Ω input resistor, accuracy ±0.15% F.S.; safety accuracy <±1% F.S.
- Analog input voltage: 0–10 V (non‑SIL), accuracy ±0.1% F.S.
Environmental
- Operating temperature: −15 °C to +70 °C
- Storage temperature: −25 °C to +70 °C
- Humidity: max. 95% RH, non‑condensing
- Protection: IP20 (IEC 60529)
Mechanical (Dimensions & Weight)
- Width: 158 mm
- Depth: 87 mm
- Weight: 1.35 kg
- Mounting: 35 mm DIN rail vertical mount
Reliability
- MTBF (SN29500 / 40 °C): 17 years
- Part number: RMP422Si 408406
Typical Applications
- Marine and offshore automation systems
- Oil & gas onshore and offshore processing
- Chemical, petrochemical and process industries
- Safety instrumented systems (SIS)
- Hazardous area Zone 2 monitoring and control
- Industrial remote I/O and distributed control systems
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