Description
1. Product Overview
2. Key Features
Delomatic‑4 Core Controller: Compact power supply and control module for basic DM‑4 Land/Marine systems.
32‑bit High‑Speed Processor: Fast control and protection processing for standard genset applications.
Precision AC Measurement: 3‑phase voltage (100–690 VAC), current (1/5 A CT), frequency, power, and power factor monitoring.
Integrated Protection Functions: Over/under voltage, over/under frequency, overload, reverse power, and short‑circuit protection.
Basic Communication Interfaces:
RS485 (ARC Network): 2‑wire, 19.2 kbps (DEIF ARC/Modbus RTU).
USB: Service interface for firmware updates and configuration.
ARCNET: Backplane communication for rack‑based systems.
6×Relay Outputs: 250 VAC / 8 A (resistive) for breaker control, alarms, and trip signals.
Event & Alarm Log: 200‑entry time‑stamped log for troubleshooting.
Marine‑Certified: CE, IEC 60945 (marine compliant).
DIN‑Rail Mountable: Compact 8TE size for easy installation in standard cabinets.
3. Technical Specifications
3.1 Electrical Ratings
| Parameter | Specification |
|---|---|
| Model | PCM4‑1 (Power and Control Module) |
| Manufacturer | DEIF A/S |
| Part Number | 1044230010G |
| AC Measurement Inputs | |
| – Voltage | 100–690 VAC, 50/60 Hz (L1/L2/L3), <0.5 mA |
| – Current | 1 A or 5 A CT secondary, <0.3 VA |
| – Accuracy | ±0.5% FS (voltage/current); ±0.2 Hz (frequency) |
| Auxiliary Supply | |
| – Voltage | 24 VDC ±20% (18–32 VDC) |
| – Power | ≤18 W (full load) |
| – Fusing | 5 A slow‑blow (internal) |
| Control Outputs | |
| – Relay Outputs | 6 × 250 VAC / 8 A (resistive), NO/COM |
| – Analog Outputs | 1 × 0–20 mA (load sharing/voltage control) |
| Communication | |
| – ARC Network | RS485 (2‑wire), 19.2 kbps (DEIF ARC/Modbus RTU) |
| – ARCNET | 2.5 Mbps (backplane communication) |
| – USB | 2.0 (service only) |
| – Node Address | Set via rotary switch S5 (1–F, hex) |
3.2 Environmental & Mechanical
| Parameter | Specification |
|---|---|
| Operating Temperature | –20 °C to +60 °C (standard); –30 °C to +60 °C (marine) |
| Storage Temperature | –40 °C to +85 °C |
| Humidity | 5–95% RH non‑condensing |
| Vibration | 2–13.2 Hz: ±0.7 mm; 13.2–100 Hz: ±0.5 g (marine) |
| Enclosure | IP20 (front/terminals); conformal coated PCB |
| Dimensions (W×H×D) | 200 × 180 × 50 mm (8TE) |
| Weight | Approx. 0.6 kg |
| Mounting | 35 mm DIN rail (horizontal) |
4. Application Scope
Marine Auxiliary Generators: Shipboard auxiliary generator control, single/parallel operation, and basic power management.
Industrial Standby Gensets: Small‑to‑medium standby generators (hospitals, commercial buildings, factories).
Land‑Based Power Plants: Isolated genset operation, grid‑parallel connection (basic), and load sharing.
Offshore Light Platforms: Small offshore rig generators (non‑harsh environment) and emergency power systems.
Retrofit Projects: Upgrade legacy Delomatic‑3 systems to Delomatic‑4 with minimal wiring changes.
Remote Monitoring (Basic): ARC network communication for basic remote monitoring and control.
5. Installation & Wiring
5.1 Installation Requirements
Mounting: Install on 35 mm DIN rail (horizontal) in a ventilated cabinet; ≥50 mm clearance top/bottom.
Environment: Avoid direct sunlight, moisture, corrosive gases, and excessive vibration.
ESD Protection: Use anti‑static wristband when handling (static‑sensitive PCB).
Cable Separation: Separate high‑voltage measurement cables from low‑voltage communication cables by ≥10 cm.
5.2 Terminal Wiring (Simplified)
| Terminal Group | Description | Wire Gauge |
|---|---|---|
| Auxiliary Power | ||
| 1–2 | 24 VDC (+/−) | 1.5 mm² |
| 3 | Chassis ground (PE) | 2.5 mm² |
| AC Voltage Inputs (L1/L2/L3) | ||
| 4–6 | 100–690 VAC (line‑line) | 2.5 mm² |
| AC Current Inputs (CT1/CT2/CT3) | ||
| 7–9 | 1 A or 5 A CT secondary | 2.5 mm² |
| Relay Outputs (OUT1–OUT6) | ||
| 10–11 | OUT1: NO/COM (breaker close) | 2.5 mm² |
| 12–13 | OUT2: NO/COM (breaker open) | 2.5 mm² |
| 14–15 | OUT3: NO/COM (alarm) | 1.5 mm² |
| 16–17 | OUT4: NO/COM (fault trip) | 1.5 mm² |
| 18–19 | OUT5: NO/COM (aux control) | 1.5 mm² |
| 20–21 | OUT6: NO/COM (aux control) | 1.5 mm² |
| Communication (ARC Network) | ||
| 22–23 | RS485 (A/B, 2‑wire) | 1.0 mm² (twisted‑pair) |
CT Polarity: Strictly match CT phase polarities (L1→L1, L2→L2, L3→L3); never open CT secondary circuits.
Bus Cable: Use twisted‑pair shielded cable for ARC network; ground shield at one end only (PCM4‑1 side).
Terminal Torque: Tighten terminals to 0.8–1.0 Nm to prevent loose connections and overheating.
Fusing: Protect AC voltage inputs with a 2 A slow‑blow fuse; relay outputs with 10 A max fuses (inductive loads).
5.3 Jumper & Switch Settings
Rotary Switch S5: Set ARC network node ID (1–F, hex); all DGUs must have unique IDs.
Jumper X11: 2‑wire RS485 (default, for multi‑drop networks).
6. Front Panel & Operation
6.1 Front Panel Layout
LED Indicators (Left to Right)
POWER: On = 24 VDC supply OK.
RUN: Flashing = Normal operation; Solid = Fault/trip.
COMM: Flashing = ARC network active; Solid = Communication fault.
ALARM: On = Active alarm; Flashing = Unacknowledged alarm.
TRIP: On = Protection trip activated.
LCD Display (16×2 characters):
Top row: Measured values (voltage, current, frequency, power).
Bottom row: Status, alarms, trip messages, and menu options.
Keypad (6 buttons):
▲/▼: Scroll menus/values.
◄/►: Move cursor/select fields.
ENTER: Confirm selection/save settings.
ESC: Exit menu/cancel changes.
6.2 Startup & Configuration
Physical Installation: Mount PCM4‑1 on DIN rail; connect 24 VDC, AC inputs, outputs, and communication wiring.
Switch/Jumper Setup: Set S5 node ID; select X11 for 2‑wire RS485.
Power On: Apply 24 VDC; POWER LED on; RUN LED flashes; LCD shows startup screen (DEIF PCM4‑1, firmware version).
AC Input Check: Verify voltage/current readings (balanced in healthy condition); frequency = 50/60 Hz.
Nominal Settings (Menu 1000):
Set Nominal Voltage: Match system voltage (e.g., 400 VAC).
Set Nominal Frequency: 50 Hz or 60 Hz.
Set CT Ratio: 1 A or 5 A (match CT secondary).
Protection Settings (Menu 2000):
Overvoltage: 110% Un, 5 s delay.
Undervoltage: 90% Un, 3 s delay.
Overfrequency: 105% fn, 2 s delay.
Underfrequency: 95% fn, 2 s delay.
Overload: 125% In, 10 s delay.
Reverse Power: 8% Pn, 3 s delay.
Genset Control (Menu 3000):
Start/Stop Logic: Configure automatic start on mains failure.
Synchronization: Enable auto‑sync (frequency/phase matching).
Load Sharing: Enable droop load sharing (basic).
Communication (Menu 4000):
ARC Network: Enable, set baud rate (19.2 kbps).
Modbus RTU: Enable (optional), set slave address.
PC Tool Connection:
USB: Connect PC to USB port; launch PICUS software; verify communication; backup settings.
6.3 Normal Operation
LCD Display: Cycles through voltage, current, frequency, power, and status.
RUN LED: Flashes every 1 second (normal).
COMM LED: Flashes every 0.5 seconds (network active).
ALARM LED: Off (no alarms); On if warning threshold exceeded.
TRIP LED: Off (no trips); On if protection threshold exceeded (breaker opens).
7. Safety Precautions
High Voltage Hazard: Only qualified electrical personnel may install/service. Disconnect all power sources (24 VDC + AC inputs) before wiring.
CT Overvoltage Risk: Never open CT secondary circuits with primary current flowing (lethal voltage). Short CTs before connecting/disconnecting.
ESD Sensitivity: Static electricity can damage internal PCB. Use anti‑static wristband and grounded ESD mat.
Relay Load Ratings: Do not exceed 250 VAC / 8 A per output; inductive loads require external surge suppression.
No Unauthorised Modification: Do not open the enclosure or modify internal circuits. Tampering voids warranty and may cause unsafe operation.
Environmental Limits: Do not operate outside –20 °C to +60 °C (standard) or –30 °C to +60 °C (marine).
8. Maintenance & Storage
8.1 Regular Maintenance (Every 6 Months)
Visual Inspection: Check for loose terminals, damaged wiring, corrosion, or overheating signs (discolouration).
Cleaning: Wipe front panel with dry lint‑free cloth; no liquid cleaners (avoid water ingress).
LED/Display Check: Verify POWER/RUN/COMM/ALARM/TRIP LEDs operate correctly; LCD shows clear, legible values.
Measurement Calibration: Compare PCM4‑1 readings with external precision meter (accuracy ±0.5% required).
Terminal Tightness: Retorque all terminals to 0.8–1.0 Nm.
Protection Test: Inject overvoltage/overfrequency; verify TRIP LED and breaker operation.
Event Log Backup: Download and save event log via PICUS software (for trend analysis/troubleshooting).
8.2 Storage Guidelines
Packaging: Store in original anti‑static packaging with desiccant.
Environment: 10–30 °C, 30–70% RH, dry, clean, and dust‑free.
Protection: Avoid direct sunlight, extreme temperatures, and mechanical shock/vibration.
Duration: Shelf life ≤2 years. Inspect for ESD damage and test basic functions before use if stored longer.
9. Troubleshooting
| Fault Phenomenon | Possible Cause | Solution |
|---|---|---|
| POWER LED Off | No 24 VDC / blown internal fuse | Check power wiring; replace 5 A fuse |
| RUN LED Solid (Fault) | AC input fault / CT open circuit / overvoltage | Check voltage/current inputs; short CTs; verify supply |
| COMM LED Solid (Fault) | Wrong S5 node ID / A/B wiring reversed / cable fault | Set unique ID; correct polarity; replace cable |
| ALARM LED On (Overload) | Excessive genset load / CT drift / unbalanced load | Reduce load; check CT connections; balance phases |
| TRIP LED On (Reverse Power) | Genset motoring / synchronization fault / wiring error | Isolate genset; re‑sync; check CT polarity |
| LCD No Display | Faulty LCD / loose display cable / power supply issue | Check power; reconnect display cable; contact DEIF service |
| No Genset Control | Incorrect control logic / faulty relay output / wiring fault | Reconfigure logic; test outputs; check wiring |
| False Tripping | Protection thresholds too low / CT saturation / external fault | Adjust thresholds; check CT rating; verify fault zone |
10. Warranty & Disclaimer
Model: PCM4‑1 Power and Control Module (Delomatic‑4).
Warranty Period: 24 months from delivery date (normal installation/use per manual).
Warranty Exclusions: Misuse, overvoltage, lightning, water ingress, unauthorised modification, improper maintenance, or CT/VT faults.
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 (e.g., downtime, lost revenue, equipment damage).
Documentation Version: 1.0 (2026); latest manual and firmware available at www.deif.com.
Get a Quote