DEIF SCM4‑2 Generator Control‑Measuring Module

Model:SCM4‑2

Brand:DEIF

System compatibility:Special‑purpose plug‑in measuring & control module for DEIF DM‑4(Delomatic‑4) DGU rack,communicates via back‑plane DM‑4‑LAN bus with PCM4‑1 / PCM4‑5 main controller. Different from SCM4‑1 for synchronisation, SCM4‑2 focuses on generator measuring and governor‑AVR regulating output,without independent hardware synchro‑check function.

Function:Integrated measuring‑control module. Measures generator three‑phase voltage(max 690V AC direct) and three‑phase CT current(1A/5A secondary),calculates power‑related electrical parameters. Provides dedicated PWM analogue outputs for engine governor and AVR speed‑voltage adjustment. Supports breaker control relay outputs. Rotary switch sets module unique address;hardware jumpers configure input signal modes. Data exchanged with PCM main controller through rack back‑plane bus.

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

Interface:

‑Back‑plane DM‑4‑LAN internal bus

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

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

‑PWM analogue output terminals for governor‑AVR drive

‑Potential‑free relay output terminals for breaker control

‑Breaker feedback signal input terminals

‑Rotary address‑setting switch and hardware configuration jumpers

Circuit feature:0.5 measuring accuracy class,2.5kV galvanic isolation for measuring circuits,surge suppression for high‑voltage measuring terminals,non‑volatile parameter storage,hardware communication watchdog.

Feature:Marine classification society approved,hot‑swap capable;relay contact rating 250VAC / 24VDC 8A resistive load. Distinguished from SCM4‑1:no busbar measuring circuit and no independent hardware synchro‑check / advance closing function.

Diagnostic:Front‑panel LED indicates module power and back‑plane bus communication status;channel fault and measuring abnormal data transmitted to PCM main controller.

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

SCM4‑2 control‑measuring module undertakes generator electrical sampling and governor‑AVR regulating drive for DEIF DM‑4 marine power‑management system. It collects generator voltage/current data and outputs speed‑voltage regulating signals for genset control. Widely used for ship and offshore generator power‑station automation cabinets. 

Product Brief

SCM4‑2 belongs to DEIF DM‑4 series marine power‑control‑system spare‑part family,rack‑mount generator control‑measuring module. It has no busbar input and synchronisation hardware function,select SCM4‑1 when synchro‑check and advance closing are required. 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.