Brief Product Description

SCM4.2 is a rack‑mount synchronizing and measurement control module for DEIF legacy generator power management systems. As a core hardware component for genset paralleling applications, it precisely measures voltage, frequency and phase angle between generator and busbar, delivering synchronisation signals to support safe generator breaker closure. Equipped with galvanically isolated voltage and current measurement inputs, it processes electrical parameters for multi‑generator load sharing and protection logic. Designed for marine and heavy‑duty industrial power panels, this legacy module fits inside DEIF control cabinets and works cooperatively with AGC and PPM series controllers. It is supplied as fully‑tested surplus and refurbished spare units for maintenance and retrofit of existing industrial and marine generator control installations.

Core Product Functions

• High‑precision measurement of voltage, frequency and phase difference for generator‑to‑busbar synchronisation
• Provide synchronising enable signals to ensure safe breaker closing for parallel generator operation
• Galvanic isolated PT/CT signal input for generator and mains electrical parameter sampling
• Support multi‑genset paralleling and assist upper controller for active and reactive load‑sharing management
• Detect out‑of‑sync conditions and block breaker closure to prevent harmful power system transients
• Process three‑phase electrical data for power calculation and auxiliary generator protection functions
• On‑board hardware self‑diagnosis to detect input signal loss and internal module faults
• Rack‑mount compact form factor for installation inside DEIF standard generator control cabinets

• Interface with DEIF AGC‑series and PPM‑series generator controllers via internal backplane connection

Application Scenarios

• Marine vessel multi‑generator paralleling control cabinets for cargo ships, tankers and offshore units
• Industrial plant multi‑diesel‑genset parallel power supply and backup power systems
• Hospital, data centre and critical facility emergency generator synchronisation control panels
• Off‑grid micro‑grid power stations requiring multiple generator sets parallel operation
• DEIF legacy power management systems built around AGC and PPM controller platforms
• Spare replacement synchronizing module for maintenance, troubleshooting and upgrade of existing generator control panels

FAQ (Frequently Asked Questions)

• Q: Generator fails to achieve proper synchronisation after SCM4.2 replacement?
  A: Check PT/CT wiring and polarity, verify voltage and frequency setpoints, inspect backplane connection and controller parameter configuration.
• Q: Module reports signal loss or self‑diagnosis alarms during operation?
  A: Inspect measurement input wiring, auxiliary power supply, terminal tightness and hardware degradation under vibration‑prone marine environments.
• Q: Does SCM4.2 support standalone synchronisation without AGC or PPM controller?
  A: No, SCM4.2 acts as a measurement and auxiliary synchronisation board, it must work with compatible DEIF main generator controllers for complete paralleling functions.
• Q: Can SCM4.2 be used with third‑party generator controllers or PLC systems?
  A: It is purpose‑built for DEIF legacy power management ecosystem, proprietary backplane interface limits compatibility with non‑DEIF devices.
• Q: Is DEIF SCM4.2 available for brand‑new generator projects?
  A: This legacy synchronizing control module has reached end‑of‑life. Only surplus and fully‑tested refurbished units are offered for existing‑site maintenance and retrofit tasks.