DEIF SCM4.1 Synchronisation‑Control‑Measuring Module

Technical Specifications

Model:SCM4.1

Brand:DEIF

System compatibility:8TE plug‑in synchronisation & measuring module for DEIF DM‑4 DGU rack, communicates via back‑plane DM‑LAN bus with PCM4.3 main controller. Responsible for generator and busbar high‑precision electrical sampling, independent hardware synchrocheck, advance closing calculation and fast hardware protection. Widely used in marine, offshore and hydro generator power management systems.

Function:Integrated measuring‑synchronisation‑protection module. Direct three‑phase voltage input up to 690V AC L1‑L2‑L3‑N for generator and busbar; CT secondary current input 1A /5A. Measures voltage, current, frequency, active/reactive power, phase angle, measurement accuracy class 0.5 (40~70Hz). Embedded independent hardware synchro‑check function, calculates breaker advance closing time and outputs advance closing command. Supports direct hardware trip output for fast protection and breaker feedback signal monitoring. Rotary switch sets unique module address; hardware jumpers configure functional options.

Installation:Plug‑in slot mounting inside DM‑4 DGU rack,8TE width back‑plane connection,screw terminal block for PT/CT field wiring,rotary address switch and hardware jumpers on front panel area.

Interface:

‑Back‑plane DM‑LAN internal bus

‑Generator three‑phase voltage terminals(max 690V AC direct)

‑Busbar three‑phase voltage terminals(max 690V AC direct)

‑Generator three‑phase CT current terminals(1A /5A secondary)

‑Potential‑free contact for breaker advance‑closing command

‑Breaker feedback signal input terminals

‑Rotary address‑setting switch and hardware configuration jumpers

‑Front‑panel LED status indicators

Circuit feature:2.5kV galvanic isolation between measuring circuit and internal logic;surge suppression for high‑voltage measuring terminals;hardware independent synchro‑check separate from main PCM controller;non‑volatile memory for module configuration;max burden per voltage phase 0.5VA,max burden per CT phase 0.4VA.

Feature:Marine classification society approved,hot‑swap capable. One DGU rack supports up to four SCM modules,each module must use unique address. SCM4.1 is the official DM‑4 naming,equivalent to SCM4‑1. Distinguished from SCM4.2:with busbar measuring circuit and independent hardware synchro‑check & advance closing function.

Diagnostic:Front‑panel LED indicates module power and DM‑LAN bus communication status;measuring fault and synchronisation condition data transmitted to PCM main controller via back‑plane bus.

Power supply:Logic power supplied by rack back‑plane from PCM module,typical power consumption 5W

Protection class:IP20 when installed inside DGU rack

Horizontal operating temperature:‑25℃ ~ +70℃

Storage temperature:‑40℃ ~ +85℃

Relative humidity:5%‑95% non‑condensing

Shock & vibration:Complies with DNV marine environmental requirement

Weight:0.52kg

Dimensions:40.5mm ×234mm ×160mm

Certification

DNV,ABS,LR,CE,marine type approval

Built‑in function:SCM4.1 synchronisation‑control‑measuring module performs high‑precision electrical sampling and independent synchro‑check for DEIF DM‑4 power management system. It acquires generator and busbar voltage/current data,judges paralleling conditions and outputs advance closing command for generator breaker. Fast hardware trip protection enhances system safety. Widely used for ship,offshore and hydro generator automation cabinet spare‑part replacement.

Product Brief

SCM4.1 belongs to DEIF DM‑4 series power control system spare‑part family,rack‑mount synchronisation control measuring module for DGU rack. Rotary address switch and hardware jumpers must be correctly configured before commissioning. Widely applied for marine and hydro power equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation.