DEIF SCM-1 Microprocessor-Based Synchronization Control Module – Automatic, safe genset-to-bus synchronizing

The DEIF SCM-1 is a microprocessor-based synchronizing control module designed

to align generator voltage, frequency, and phase with a live bus or another generator, then issue a precise breaker close command. From my experience, it’s a dependable choice for retrofits and new builds where an independent, purpose-built synchronizer is preferred over a fully programmable PLC approach. One thing I appreciate is how the SCM-1 typically handles the “raise/lower” pulses for governor and AVR, letting you achieve smooth, repeatable synchronization without overcomplicating the panel.

You might notice that it pairs neatly with DEIF load sharing modules (like LSM-series) in multi-gen systems, but it also works perfectly as a standalone synchronizer in single set-to-mains applications. A shipyard customer told us their changeover time dropped noticeably after replacing manual synch-check with the SCM-1—less operator guesswork, more consistent transfers.

Order Placement Process & Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment prior to delivery
• Express options: FedEx, UPS, DHL

Key Features

• Microprocessor-based synchronizing logic – Consistent timing and repeatability in most operating conditions.
• Frequency & phase matching – Aligns slip and phase angle within adjustable windows before issuing the close command.
• Voltage matching – Coordinates AVR raise/lower pulses so the generator voltage tracks the bus voltage smoothly.
• Raise/Lower outputs for governor & AVR – Simple pulse outputs typically used for speed and voltage control.
• Breaker close with lead compensation – Anticipates breaker closing time to land on target phase angle.
• Dead-bus & live-bus checks – Helps ensure safe closing sequences and reduces operator risk.
• 50/60 Hz compatible – Suitable for global deployments without redesigning the panel.
• Standalone operation – No PLC required; typically wired directly to governor/AVR and breaker circuits.

Technical Specifications

Application Fields

The SCM-1 is commonly used in:

• Genset-to-mains synchronization for standby and prime power systems
• Generator-to-bus synchronization in islanded power plants with multiple sets
• Industrial cogeneration and CHP where soft transfers reduce process impact
• Marine switchboards (aux gensets, harbor-to-ship transfers)
• Oil & gas sites, data centers, hospitals, and utilities requiring controlled re-energization

Advantages & Value

• Reliability first: Stable synchronization logic reduces mis-closing risks and helps protect switchgear.
• Compatibility: Works with typical governors and AVRs (raise/lower control), so retrofit wiring tends to be straightforward.
• Cost-effective: A focused synchronizer often costs less and installs faster than PLC-based schemes for similar outcomes.
• Scalable: Combine with DEIF load sharing modules when you add more gensets later—keeping the control concept consistent.
• Supportable: Clear terminal labeling and familiar DEIF logic make maintenance simpler for on-site teams.

Installation & Maintenance

• Panel environment: Mount on 35 mm DIN rail in a clean, dry control cabinet with adequate ventilation; keep away from high-EMI cabling where practical.
• Wiring practices: Use shielded twisted pair for sensing where appropriate; segregate low-level signals from power circuits; follow correct phase sequence to avoid sync rejection.
• Protection coordination: Confirm PT ratios, breaker close time, and sync windows during commissioning; verify dead-bus logic before live operation.
• Routine checks: Periodic terminal tightening, dust removal, and function tests (dry-run sync checks) typically keep performance stable.
• Firmware/config: Some units are fixed-function; if your variant supports configuration tools, back up parameters and control setpoints after commissioning.
• Safety: Only qualified personnel should work on live systems; lockout/tagout applies during rewiring or breaker work.

Quality & Certifications

• CE marked and designed for industrial EMC environments (EN 61000 series, typical for DEIF products).
• RoHS compliant manufacturing; ISO 9001 quality system at the producer level.
• UL/Marine approvals may vary by hardware revision; we can verify against your ship/class or regional demands.
• Warranty: 365 days from delivery.

If you’re replacing a legacy synchronizer or moving from manual synch-check to automated closing, the DEIF SCM-1 seems to be a solid, low-drama upgrade. Share your governor/AVR models and breaker close time, and we’ll align parameters so the first trial sync behaves the way you expect.