Description
1. Product Overview
2. Key Features
40‑Channel Multi‑I/O: Comprehensive mix of analogue, digital, temperature, and frequency channelsDEIF.
Universal Analogue Inputs: Software‑configurable for voltage (0–10 V), current (4–20 mA), or RTD (PT100/Ni100) sensors.
Optical Isolation: 550 VAC isolation per channel for noise immunity and safetyDEIF.
High‑Frequency Inputs: 0–20 kHz pulse/frequency inputs for speed/flow monitoringDEIF.
PWM Analogue Outputs: 2 × PWM outputs for governor/AVR control.
Hot‑Swappable: Module replacement without system shutdown (DM‑4 rack compatible).
LED Status Indicators: Power, communication, and channel diagnosticsDEIF.
Marine & Industrial Certified: DNV‑GL, ABS, LR, BV, RINA, CE, EMC compliant.
3. Technical Specifications
3.1 Electrical Ratings
| Parameter | Specification |
|---|---|
| Model | IOM4.2 |
| System Compatibility | Delomatic 4 (DM‑4 Land/Marine/Wind)DEIF |
| Input Channels | |
| – Analogue Inputs (AI) | 10 × universal (0–10 V / 4–20 mA / PT100/Ni100) |
| – Digital Inputs (DI) | 12 × optically isolated (9–36 VDC)DEIF |
| – Frequency Inputs (FI) | 4 × pulse (0–20 kHz, 9–36 VDC)DEIF |
| Output Channels | |
| – Analogue Outputs (AO) | 4 × 0–10 V / 4–20 mA (2 × PWM configurable) |
| – Digital Outputs (DO) | 4 × relay (250 VAC / 8 A) |
| Control Supply | 24 VDC (10–35 VDC), reverse polarity protected |
| Power Consumption | <5 W |
| Isolation | 550 VAC optical isolation (all I/O)DEIF |
| Resolution (Analogue) | 12‑bit (AI/AO) |
| Accuracy (Analogue) | ±0.1% FS (25°C) |
3.2 Environmental & Mechanical
| Parameter | Specification |
|---|---|
| Operating Temperature | -25°C to +70°C (-13°F to 158°F) |
| Storage Temperature | -40°C to +85°C (-40°F to 185°F) |
| Humidity | 0–95% RH non‑condensing |
| Vibration | 2–13.2 Hz: ±1 mm; 13.2–100 Hz: ±0.7 g |
| Enclosure | IP20 (front), IP65 (with terminal cover) |
| Dimensions (W×H×D) | 240 × 160 × 50 mm (6HE, double euro) |
| Weight | Approx. 1.3 kg |
| Mounting | 35 mm DIN rail or 19” DM‑4 rack |
4. Application Scope
Power Generation: Generator monitoring/control (voltage, frequency, temperature, fuel flow)DEIF.
Wind Turbines: Pitch control, vibration monitoring, and grid interface (AWC 400 compatible)DEIF.
Marine Power Systems: Shipboard genset automation, switchboard control, and alarm monitoring.
CHP & Cogeneration: Combined heat/power plant I/O interfacing (sensors, valves, governors)DEIF.
Industrial Automation: Factory process control, motor control, and analogue/digital signal conditioning.
5. Installation & Wiring
5.1 Installation Requirements
Mounting: Install in a DM‑4 19” rack or 35 mm DIN rail (vertical orientation); ensure ≥50 mm clearance for ventilation.
Environment: Avoid direct sunlight, moisture, corrosive gases, and excessive vibration.
ESD Protection: Use an anti‑static wristband when handling the module (static‑sensitive components).
5.2 Module Addressing
Rotary Switch: Set the I/O station address (0–15) using the front‑panel rotary switch; match the address in the DM‑4 system configuration.
5.3 Terminal Wiring (Simplified)
| Terminal Group | Description | Wire Gauge |
|---|---|---|
| Power | ||
| 1–2 | 24 VDC Power (+/−) | 1.5 mm² |
| 3 | Chassis Ground (Earth) | 2.5 mm² |
| Analogue Inputs (AI1–AI10) | ||
| 4–13 | AI Channels (V/mA/RTD) | 1.0 mm² |
| Digital Inputs (DI1–DI12) | ||
| 14–25 | DI Channels (9–36 VDC) | 1.0 mm² |
| Frequency Inputs (FI1–FI4) | ||
| 26–29 | FI Channels (0–20 kHz) | 1.5 mm² |
| Analogue Outputs (AO1–AO4) | ||
| 30–33 | AO Channels (0–10 V / 4–20 mA / PWM) | 1.5 mm² |
| Digital Outputs (DO1–DO4) | ||
| 34–37 | Relay DO (NO/COM) | 2.5 mm² |
AI Configuration: Use DEIF Utility Software to set AI channel type (voltage/current/RTD); no DIP switches required.
Shielded Cables: Use twisted‑pair shielded cables for analogue/frequency signals; ground shields at one end only.
Terminal Torque: Tighten terminals to 0.8–1.0 Nm to avoid loose connections.
6. Front Panel & Operation
6.1 Front Panel Layout
LED Indicators
POWER: On when 24 VDC supply is present.
COM: Flashes during active communication with the DM‑4 main controller (PCM4.x).
STATUS: On solid if no faults; flashes for module/channel errors.
Rotary Address Switch: Sets I/O station address (0–15).
6.2 Startup & Configuration
Power On: Apply 24 VDC; POWER LED lights.
Address Setting: Verify rotary switch address matches system configuration.
Channel Configuration: Use DEIF Utility Software to set AI type (V/mA/RTD), AO range, and DI/DO logic.
System Recognition: The DM‑4 PCM detects the IOM4.2; COM LED flashes during handshake.
Parameter Setup: Configure scaling, fault thresholds, and PWM parameters (if used).
Operation: STATUS LED solid = normal operation; inputs/outputs active per system logic.
7. Safety Precautions
High Voltage Hazard: Only qualified electricians may install/service; disconnect all power before wiring.
ESD Risk: Static electricity can damage the PCB; use anti‑static protection when handling.
Hot‑Swap Caution: Ensure the DM‑4 system is in switchboard control before replacing the module.
No Unauthorised Modification: Do not open the enclosure; tampering voids the warranty.
Environmental Limits: Do not operate outside -25°C to +70°C; avoid condensation.
8. Maintenance & Storage
8.1 Regular Maintenance (Every 6 Months)
Visual Inspection: Check for loose terminals, damaged wiring, or corrosion.
Cleaning: Wipe the front panel with a dry cloth; do not use liquid cleaners.
LED Check: Verify POWER, COM, and STATUS LEDs operate correctly.
Channel Test: Use DEIF Utility Software to test AI/AO/DI/DO/FI accuracy and functionality.
Cable Tightness: Re‑tighten terminals to 0.8–1.0 Nm.
8.2 Storage Guidelines
Condition: Store in original anti‑static packaging at 10–30°C, 30–70% RH.
Environment: Keep dry; avoid direct sunlight and extreme temperatures.
Duration: Shelf life ≤2 years; inspect for ESD damage before use if stored longer.
9. Troubleshooting
| Fault Phenomenon | Possible Cause | Solution |
|---|---|---|
| POWER LED Off | No 24 VDC supply / blown fuse | Check power wiring; replace 3 A fuse |
| COM LED Not Flashing | Incorrect address / PCM communication fault | Verify rotary switch address; check ARC‑Net cable |
| STATUS LED Flashing | AI/DI/AO/DO/FI fault / overvoltage | Check wiring; verify software channel configuration |
| Analogue Input Inaccurate | Software config mismatch / noisy signal | Correct AI type in Utility Software; use shielded cables |
| Frequency Input Not Reading | Incorrect voltage range / wiring fault | Verify FI input voltage (9–36 VDC); check terminals 26–29 |
| Digital Output Not Activating | Overload / wiring fault | Check load; verify DO terminal connections |
10. Warranty & Disclaimer
Model: IOM4.2 Multi‑Function Input/Output Module.
Warranty Period: 24 months from delivery date under normal installation and use.
Warranty Exclusions: Damage from misuse, overvoltage, lightning, water ingress, or unauthorised modification.
Specifications Subject to Change: Manufacturer reserves the right to update specifications without prior notice.
Liability Limitation: Manufacturer is not liable for indirect or consequential damages.
Documentation Version: 1.0 (2026); latest manual available at www.deif.com.
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