SAM ELECTRONICS EMP2200

Description

Technical Specifications

• Operating Supply Voltage: 24 VDC nominal, operating range 18 VDC – 32 VDC
• Power Consumption: Max 45 W
• Digital Input Channels: 128 galvanically isolated binary alarm inputs
• Digital Relay Outputs: 64 SPST relay outputs, 5 A / 250 VAC contact rating
• Communication Interfaces: Dual redundant CAN bus, RS485 Modbus RTU, Ethernet TCP/IP 10/100 Mbps
• Operating Temperature Range: -20 °C to +60 °C
• Storage Temperature Range: -40 °C to +70 °C
• Protection Class: IP30 front panel, IP20 internal cabinet assembly
• EMC Compliance: IEC 60945 marine EMC standard, DNV, ABS, LR marine classification certified

Functional Features

1. Real-time continuous scanning of all machinery alarm sensor inputs with 10 ms response latency
2. Hierarchical alarm classification: pre-alarm, critical fault, emergency shutdown trigger signals
3. Local visual LED status indication per input channel
4. Historical alarm event logging with timestamp precision of 1 second, 10,000 event storage capacity
5. Redundant communication bus architecture to eliminate single-point communication failure
6. Parameter configuration via front panel keypad or remote PC configuration software
7. Group alarm suppression function for batch machinery maintenance scenarios
8. Fault self-diagnosis for internal circuit, power supply and communication module failures

Performance Parameters

• Input scan cycle: Fixed 10 ms refresh rate
• Alarm transmission delay: ≤ 20 ms to remote display terminals
• Data log retention: Non-volatile flash memory, data retention ≥ 10 years without external power
• Relay mechanical service life: 10,000,000 switching cycles under rated load
• Vibration resistance: 2–100 Hz, amplitude 1 mm, compliant with IEC 60068-2-6 marine vibration standard

Material Composition

• Front panel: 3 mm thick cold-rolled aluminum alloy with matte anti-corrosion powder coating
• Internal chassis: Galvanized steel sheet metal, anti-rust passivation treatment
• Circuit substrate: FR4 high-temperature flame-retardant PCB, TG 170 °C
• Terminal blocks: Glass-fiber reinforced PA66 plastic, tin-plated copper conductive contacts

Structural Characteristics

• Standard 19-inch rack-mount form factor, 6U height, depth 280 mm
• Modular pluggable I/O card design for independent channel replacement without full unit shutdown
• Dual isolated power supply circuit to separate alarm input loop and logic control circuit
• Separate wiring compartments for power cables, signal cables and communication bus cables

Working Principle

The unit continuously polls all connected binary sensor inputs via isolated signal circuits. Analog threshold conversion and digital signal filtering eliminate marine electrical interference noise. Valid alarm triggers are timestamped, stored in on-board flash memory, broadcast to remote operator terminals via redundant CAN/Ethernet buses, and activate corresponding relay output contacts for audible/visual alarm annunciators. Internal watchdog circuit monitors CPU operation to trigger safe reset upon processor lockup.

Advantage Highlights

1. Full marine classification society certification for global commercial ship installation
2. Redundant communication architecture ensures uninterrupted alarm monitoring during single bus failure
3. Modular pluggable hardware minimizes vessel onboard maintenance downtime
4. Wide operating voltage tolerance adapts to unstable marine 24 VDC power grids
5. High-capacity non-volatile event logger eliminates requirement for external recording hardware
6. Marine-specific EMC filtering suppresses interference from propulsion frequency converters and radar equipment

Applicable Industries

Commercial cargo vessels, container ships, oil tankers, bulk carriers, passenger ferries, naval auxiliary vessels, offshore support vessels, floating production storage and offloading units (FPSO)

Installation Requirements

1. Mount inside climate-controlled electrical machinery room cabinet with ambient humidity ≤ 90% non-condensing
2. Maintain minimum 50 mm clearance above and below unit for forced air convection cooling
3. Separate signal wiring and high-power relay wiring by minimum 10 cm distance to avoid cross-interference
4. Connect dedicated marine-grade 24 VDC filtered power supply with surge protection device at input terminal
5. Equip cabinet with vibration damping mounting brackets to comply with marine vibration standards
6. Earth unit chassis to vessel protective ground bus with 4 mm² copper ground cable

Operation Precautions

1. Do not operate unit under ambient temperature exceeding +60 °C or below -20 °C
2. Avoid direct exposure to saltwater spray, water splashes or high-humidity unventilated compartments
3. Disconnect primary power supply before removing pluggable I/O modules
4. Clear alarm event logs only after completing official vessel machinery inspection records
5. Do not daisy-chain more than 16 EMP2200 units on a single CAN bus segment
6. Conduct full input/output channel calibration every 12 months per marine classification regulations