Description
1. Product Overview
2. Key Features
40‑Channel Multi‑I/O: 16 analogue inputs, 16 digital inputs, 2 frequency inputs, 4 analogue outputs, 4 digital outputs.
Configurable Analogue Inputs: DIP‑switch selectable binary, 0–10 V, or 4–20 mA per channel.
Galvanic Isolation: 2.5 kV AC isolation between field and system bus.
Hot‑Swappable: Replaceable without system shutdown (DM‑4 rack compatible).
Rotary Address Switch: Sets I/O station address (0–15).
LED Status Indicators: Power, communication, and channel diagnostics.
Marine & Industrial Certified: CE, DNV‑GL, ABS compliant.
Wide Operating Temperature: –20 °C to +70 °C.
3. Technical Specifications
3.1 Electrical Ratings
| Parameter | Specification |
|---|---|
| Model | IOM4‑1 (IOM4.1) |
| System Compatibility | Delomatic 4 (DM‑4 Land/Marine) |
| Input Channels | |
| – Analogue Inputs (AI) | 16 × configurable (0–10 V / 4–20 mA / binary) |
| – Digital Inputs (DI) | 16 × 24 VDC logic (sink/source) |
| – Frequency Inputs (FI) | 2 × 0–10 kHz (24 VDC) |
| Output Channels | |
| – Analogue Outputs (AO) | 4 × 0–10 V / 4–20 mA (configurable) |
| – Digital Outputs (DO) | 2 × relay (250 VAC / 8 A) + 2 × transistor (24 VDC / 1 A) |
| Control Supply | 24 VDC ±20% (18–32 VDC), ≤15 W |
| Isolation | 2.5 kV AC (1 min) field‑to‑bus |
| Resolution (Analogue) | 12‑bit (AI/AO) |
| Accuracy (Analogue) | ±0.1% FS @ 25 °C |
3.2 Environmental & Mechanical
| Parameter | Specification |
|---|---|
| Operating Temperature | –20 °C to +70 °C |
| Storage Temperature | –30 °C to +80 °C |
| Humidity | 95% RH non‑condensing |
| Vibration | 2–13.2 Hz: ±1 mm; 13.2–100 Hz: ±0.7 g |
| Enclosure | IP20 (front), IP00 (rear) |
| Dimensions (W×H×D) | 240 × 160 × 50 mm (6HE, double euro) |
| Weight | Approx. 1.2 kg |
| Mounting | 19” DIN rack (DM‑4 standard cabinet) |
4. Application Scope
Power Generation: Generator monitoring/control (voltage, frequency, temperature, fuel flow).
Marine Power Systems: Shipboard genset automation, switchboard control, alarm monitoring.
CHP & Cogeneration: I/O interfacing for sensors, valves, governors.
Industrial Automation: Process control, motor control, signal conditioning.
Remote Monitoring: SCADA/telemetry data acquisition.
5. Installation & Wiring
5.1 Installation Requirements
Mounting: Install in a DM‑4 19” rack (vertical); ≥50 mm clearance for ventilation.
Environment: Avoid direct sunlight, moisture, corrosive gases, excessive vibration.
ESD Protection: Use anti‑static wristband when handling.
5.2 Module Addressing
Rotary Switch: Set I/O station address (0–15); match DM‑4 system configuration.
5.3 Terminal Wiring (Simplified)
| Terminal Group | Description | Wire Gauge |
|---|---|---|
| Power | ||
| 1–2 | 24 VDC (+/−) | 1.5 mm² |
| 3 | Chassis ground (PE) | 2.5 mm² |
| Analogue Inputs (AI1–AI16) | ||
| 4–19 | Configurable (V/mA/binary) | 1.0 mm² |
| Digital Inputs (DI1–DI16) | ||
| 20–35 | 24 VDC logic | 1.0 mm² |
| Frequency Inputs (FI1–FI2) | ||
| 36–37 | 0–10 kHz pulse | 1.5 mm² |
| Analogue Outputs (AO1–AO4) | ||
| 38–41 | 0–10 V / 4–20 mA | 1.5 mm² |
| Digital Outputs (DO1–DO4) | ||
| 42–43 | Relay DO1 (NO/COM) | 2.5 mm² |
| 44–45 | Relay DO2 (NO/COM) | 2.5 mm² |
| 46–47 | Transistor DO3/DO4 (+/−) | 1.5 mm² |
AI Configuration: Set DIP switches per channel for voltage (V), current (I), or binary (B) (PCB silkscreen).
Shielded Cables: Use twisted‑pair shielded cables for analogue/frequency signals; ground shield at one end only.
Terminal Torque: 0.8–1.0 Nm.
6. Front Panel & Operation
6.1 Front Panel Layout
LED Indicators
POWER: On = 24 VDC present.
COM: Flashes = active communication with PCM4.x.
STATUS: On solid = normal; flashes = fault.
Rotary Address Switch: 0–15.
DIP Switches (PCB): AI channel type (V/I/B).
6.2 Startup & Configuration
Power On: Apply 24 VDC; POWER LED on.
Address Setting: Verify rotary switch matches system config.
AI Configuration: Set DIP switches for V/I/B.
System Recognition: DM‑4 PCM detects IOM4‑1; COM flashes.
Parameter Setup: Use DEIF Utility Software for scaling, thresholds.
Operation: STATUS solid = normal; I/O active.
7. Safety Precautions
High Voltage: Only qualified electricians to install/service; disconnect power before wiring.
ESD Risk: Use anti‑static protection.
Hot‑Swap: Ensure system is in switchboard control before replacement.
No Modification: Do not open enclosure; tampering voids warranty.
Environmental Limits: Do not operate outside –20 °C to +70 °C.
8. Maintenance & Storage
8.1 Regular Maintenance (Every 6 Months)
Visual Inspection: Loose terminals, damaged wiring, corrosion.
Cleaning: Wipe front panel dry; no liquid cleaners.
LED Check: POWER, COM, STATUS operation.
Channel Test: Verify AI/AO/DI/DO/FI accuracy via Utility Software.
Cable Tightness: Retorque terminals to 0.8–1.0 Nm.
8.2 Storage Guidelines
Condition: Original anti‑static packaging, 10–30 °C, 30–70% RH.
Environment: Dry, avoid direct sunlight/extreme temps.
Duration: Shelf life ≤2 years; inspect ESD damage before use if stored longer.
9. Troubleshooting
| Fault Phenomenon | Possible Cause | Solution |
|---|---|---|
| POWER LED Off | No 24 VDC / blown fuse | Check power wiring; replace 3 A fuse |
| COM LED Not Flashing | Wrong address / PCM communication fault | Verify rotary switch; check ARC‑Net cable |
| STATUS LED Flashing | I/O fault / overvoltage | Check wiring; verify DIP switches |
| Analogue Input Inaccurate | DIP mismatch / noisy signal | Correct DIP; use shielded cables |
| Frequency Input No Reading | Wrong voltage / wiring fault | Verify 24 VDC; check terminals 36–37 |
| Digital Output Not Activating | Overload / wiring fault | Check load; verify DO connections |
10. Warranty & Disclaimer
Model: IOM4‑1 (IOM4.1) Combined Input/Output Module.
Warranty Period: 24 months from delivery (normal installation/use).
Warranty Exclusions: Misuse, overvoltage, lightning, water ingress, unauthorised modification.
Specifications Subject to Change: Manufacturer reserves right to update specs without notice.
Liability Limitation: No liability for indirect/consequential damages.
Documentation Version: 1.0 (2026); latest manual at www.deif.com。
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