DEIF CRM‑1 Delomatic‑3 Current Relay Protection Module

Technical Specifications

Model:CRM‑1

Brand:DEIF

System compatibility:Plug‑in protection extension module for DEIF Delomatic‑3 DGU rack,communicates via back‑plane ARC‑net bus with CM‑2 main controller,max 4 units per single DGU rack,requires independent 24VDC safety power supply for hard‑wired trip function

Function:Three‑phase current relay protection module,configurable for short‑circuit protection,earth‑fault protection or generator differential current protection. Measures three‑phase AC current,activates trip relay when current exceeds threshold with configurable time‑delay. Supports parameter setting via Delomatic‑3 software or onboard DIP switches. Retains independent protection trip function even when DGU main system fails.

Installation:Plug‑in slot mounting inside Delomatic‑3 DGU rack,6TE width back‑plane connection,separate external 24VDC safety power wiring

Interface:

‑Back‑plane ARC‑net internal bus

‑3‑phase current transformer input

‑Hard‑wired trip relay output

‑Onboard DIP‑switch setting

Circuit feature:Independent power supply for protection trip circuit,hardware DIP‑switch fallback setting,time‑delay configurable,over‑current detection,relay trip output for generator breaker

Feature:Rack‑mount plug‑in module,marine classification approved,hard‑wired trip output independent of CM‑2 controller,multiple CRM‑1 can be installed in one DGU for multi‑stage protection

Diagnostic:Front‑panel LED indicates module power,CT input status and protection trip event,fault status transmitted to CM‑2 via ARC‑net bus

Power supply:24VDC external safety power(+30/‑20%),also obtains logic power from rack back‑plane,typical power consumption 2W

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 / GL marine environmental requirement

Weight:0.50kg

Dimensions:30.5mm ×234mm ×160mm

Certification:DNV,GL,LR,ABS,CE

Built‑in function

CRM‑1 current relay module provides high‑reliability current‑based fault protection for DEIF Delomatic‑3 generator system. It detects short‑circuit,earth‑fault or generator winding differential faults and triggers breaker trip. Independent safety power supply ensures protection action even if main DGU controller fails. Parameters can be set by software or local DIP switches. Widely used for marine and offshore generator power‑plant fault protection.

Product Brief

CRM‑1 belongs to DEIF Delomatic‑3 series marine power‑control‑system spare‑part family,current relay protection extension module for DGU rack. Max four CRM‑1 modules for one DGU unit. Requires separate 24VDC safety power supply for trip function. Widely applied for marine generator control cabinet maintenance and renovation. ESD anti‑static protection shall be followed during installation.