DEIF SCM4.2 Synchronization Control Module

Product Description

DEIF SCM4.2 is a rack‑mounted generator synchronizing & paralleling control module for Danish DEIF Delomatic‑4 (DM‑4) power plant control system. It is a plug‑in backplane‑bus card, working together with PCM4.3 power main module and IOM4.2 I/O modules. It performs automatic synchronizing, active/reactive load sharing, frequency and voltage regulation for multiple generator setsDEIF.

The module precisely measures generator and busbar voltage, frequency and phase angle, executes auto‑synchronizing closing logic for generator‑to‑grid or generator‑to‑generator parallel operation. Analog outputs interface with governor and AVR units. CAN‑bus and ARC‑net internal buses realize high‑speed data exchange between rack modules. Terminals include voltage measurement inputs, relay outputs and analog I/O. On‑board LED indicators provide operation and fault diagnosis. Parameters can be configured via software. OEM discontinued. Surplus‑new and tested‑refurbished units serve as critical spares for marine and on‑shore DM‑4 power‑plant control retrofits.

2. Product Parameters

• Model: SCM4.2
• Brand: DEIF (Denmark)
• Product Type: Generator Synchronizing & Paralleling Control Module
• Applicable System: Delomatic‑4 (DM‑4) Power Plant Control System
• Matched Modules: PCM4.3 (Power & Main CPU), IOM4.2 (I/O Module)
• Mounting: Rack plug‑in type, backplane bus connection
• Power Supply: 24 VDC supplied by rack PCM4.3 module
• Measuring Voltage: 100‑690 V AC, 50/60 Hz
• Synchronizing Accuracy: ±0.02 Hz frequency, ±0.3° phase angle
• Internal Bus: CAN‑bus, ARC‑net
• Analog Output: Max. 25 mA for governor & AVR control
• Relay Output: 250 VAC / 24 VDC, 8 A resistive load
• Analog Input: 0‑10 V / 0‑20 mA
• Functions: Auto synchronizing & closing, active/reactive load sharing, frequency & voltage regulation, paralleling protection
• Status Indication: On‑board LED for run, synchronizing and fault status
• Operating Temperature: ‑20℃ ~ +55℃
• Storage Temperature: ‑40℃ ~ +85℃
• Ingress Protection: IP20 (cabinet‑rack installation only)
• Approvals: CE, marine classification society approvals
• Product Status: OEM discontinued; surplus‑new / tested‑refurbished spares available
• Key Features: High‑precision auto‑synchronization, multi‑unit load sharing, governor‑AVR analog outputs, CAN / ARC‑net rack bus, quick plug‑in replacement, for DM‑4 marine & land‑based generator control systems

3. Product Application

As the synchronizing‑paralleling unit of Delomatic‑4 system, SCM4.2 realizes generator auto‑grid‑connection and load management. Main application fields are listed below:

1. Marine Power Plants: Automatic synchronizing, parallel operation and load sharing for multiple diesel generator sets on merchant and offshore working vessels.
2. On‑shore Emergency Power Stations: Parallel control for multiple diesel standby generators in factories and data centers, mains‑generator synchronous transfer.
3. Offshore Oil‑gas Platforms: Multi‑generator parallel running and load balancing for platform power systems.
4. CHP Cogeneration Plants: Gas‑engine power stations for generator synchronizing and active/reactive power regulation.
5. Industrial Self‑owned Power Houses: Auto‑synchronizing and switching for multiple generators in petrochemical and metallurgical sites.
6. Legacy‑system Maintenance & Retrofit: Spare‑part replacement for existing DEIF DM‑4 power‑plant control cabinets during equipment overhaul.