DEIF SCM4‑1 Synchronisation‑Control‑Measuring Module

Technical Specifications

Model:SCM4‑1

Brand:DEIF

System compatibility:Special‑purpose plug‑in measuring & synchronisation module for DEIF DM‑4(Delomatic‑4) DGU rack,communicates via back‑plane DM‑4‑LAN bus with PCM4‑1 / PCM4‑5 main CPU. Responsible for generator and busbar high‑precision electrical sampling,independent synchro‑check and fast hardware protection,performs advance closing calculation for breaker paralleling.

Function:Integrated measuring‑synchronisation‑protection module. Direct three‑phase voltage input up to 690V AC L1‑L2‑L3‑N for generator and busbar;CT current input 1A /5A secondary. Real‑time measures voltage,current,frequency,active/reactive power,phase angle,measurement accuracy class 0.5. Embedded hardware independent synchro‑check function,calculates breaker advance closing time,outputs advance closing command. Supports direct trip output for fast protection,evaluates breaker feedback signal. Rotary switch sets module address inside rack,hardware jumpers configure partial function 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‑setting switch and function jumpers on front‑panel area.

Interface:

‑Back‑plane DM‑4‑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

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

Feature:Marine classification society approved,hot‑swap capable;maximum 4 SCM4‑1/SCM4‑2 modules per single DGU rack,each module must occupy unique address. Distinguished from signal‑acquisition IOM4‑1/IOM4‑2:optimized for high‑precision power‑grid measurement and synchronisation advance‑closing logic.

Diagnostic:Front‑panel LED indicates module power and DM‑4‑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 PCM module via rack back‑plane,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 undertakes high‑precision electrical sampling and independent synchro‑check for DEIF DM‑4 marine power‑management system. It acquires generator and busbar voltage/current data,judges paralleling conditions and outputs advance‑closing command for breaker. Provides fast independent protection trip signal to improve system safety. Widely used for ship and offshore generator power‑station automation cabinets.

Product Brief

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