Description
Kongsberg RMP420 (306712) Remote Multipurpose I/O Module – Flexible field I/O for marine and industrial control
The Kongsberg RMP420, part number 306712, is a remote multipurpose input/output module designed to expand field signals reliably in KONGSBERG automation networks. From my experience, it’s typically used in K-Chief and related KONGSBERG systems to collect analog/digital signals, drive outputs, and make cabinet wiring simpler on vessels and in demanding industrial environments. One thing I appreciate is how it seems to balance rugged design with straightforward serviceability—pluggable terminals, clear diagnostics, and a compact footprint that fits DIN-rail layouts cleanly.
Our Order Placement Process and Guarantees
- Warranty: 365 days
- Lead time: 1 week if in stock; no more than one month at the latest
- Payment: 50% advance payment; full balance prior to delivery
- Express options: FedEx, UPS, DHL
Key Features
- Multipurpose I/O – Supports mixed digital inputs/outputs and analog inputs/outputs; typically includes support for 24 VDC DI/DO and 4–20 mA/0–10 V analog.
- Marine-ready design – Built for cabinet installation in engine rooms and control spaces; aligns with common marine standards used by KONGSBERG.
- Network integration – Interfaces with KONGSBERG field networks (commonly K-Net in K-Chief environments) for seamless system mapping.
- Service-friendly wiring – Pluggable terminal blocks and labeled channels reduce downtime during swap-outs or expansions.
- Compact DIN-rail footprint – Saves panel space and simplifies retrofit projects where cabinet depth is tight.
- Diagnostics and status LEDs – Quick visual checks help technicians localize faults without extensive tooling.
Technical Specifications
| Brand / Model | Kongsberg Maritime RMP420, Part No. 306712 |
| HS Code | 8537.10 (Boards/panels for electric control, ≤1000 V; for reference—confirm with local customs) |
| Power Requirements | 24 VDC nominal (18–32 VDC typical for RMP-series modules) |
| Signal Input/Output Types | Mixed DI/DO (24 VDC), AI (4–20 mA / 0–10 V), AO (4–20 mA); selected variants support RTD (Pt100) |
| Communication Interfaces | KONGSBERG fieldbus (commonly K-Net in K-Chief systems); integration via system controllers |
| Installation Method | DIN-rail or backplate mounting inside control cabinet; pluggable terminals |
| Operating Temperature | -15 °C to +55 °C (typical for IEC 60945 protected environments) |
Application Fields
You’ll typically see the RMP420 in marine automation and safety systems where distributed I/O is preferred:
- K-Chief-based ship automation: machinery monitoring, alarm and control
- Engine room and auxiliary systems: pumps, compressors, separators, HVAC
- Cargo operations: tank level/temperature, valve control, ballast handling
- Power management and switchboard interfaces (status/alarm aggregation)
- Thruster/DP signal interfacing, where stable analog I/O is needed
A chief engineer on a PSV told us, “We swapped in an RMP420 during a short port call and had the points mapped in under an hour—wiring was the easy part.”
Advantages & Value
- Reliability – Designed for harsh shipboard environments; stable 24 VDC operation and robust terminals reduce intermittent faults.
- Compatibility – Fits into existing KONGSBERG networks, which typically means quicker commissioning and fewer surprises.
- Cost Control – Multipurpose channels and compact mounting help save cabinet real estate and wiring costs.
- Lifecycle Support – Long-term availability and global service coverage; spare strategy is straightforward for fleet standardization.
Installation & Maintenance
- Cabinet environment – Install in a ventilated control cabinet (DIN-rail or backplate). Keep within the stated temperature range and away from high-vibration zones when possible.
- Power & grounding – Use regulated 24 VDC with proper grounding. Separate power for I/O loads and electronics is recommended in many cases.
- Wiring practices – Shielded twisted pairs for analog and RTD signals; route separately from high-voltage lines. Maintain terminal torque per manufacturer guidance.
- Network – Follow KONGSBERG topology (commonly K-Net segments). Keep cable lengths and termination consistent with system documentation.
- Safety – Isolate power before servicing. Observe ESD precautions when handling modules and connectors.
- Routine maintenance – Periodic visual inspection, connector re-seating if needed, cleaning of dust with dry air, and configuration backup. Firmware updates should be performed by qualified personnel according to the site’s change control.
Quality & Certifications
- CE compliant; manufacturer operates under ISO 9001 quality management
- Marine type approvals (e.g., DNV, ABS, BV) are commonly available for KONGSBERG modules—confirm per build/serial
- RoHS compliance where applicable
- Standard manufacturer’s warranty; sales warranty provided above (365 days)
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