NGC-30-CR -CRM -CRMS -CTM -CVM
ControlandMonitoringModulesforUsewiththenVent
RAYCHEMNGC-30InstallationInstructions
DESCRIPTION
ThenVentRAYCHEMNGC-30-CRM/-CRMSandNGC-30-
CTMprovideground-faultandlinecurrentsensing,alarming,
switchingandRTDinputsforfiveheat-tracingcircuitswhen
usedwiththeNGC-UIT.TheNGC-30-CRMisusedtocontrol
ElectromechanicalRelays(EMRs)andtheNGC-30-CRMSisused
tocontrolSolidStateRelays(SSRs).
TOOLS REQUIRED
• Wirecutters
• RJ11stripping/crimpingtool
• RJ11connectors
• Screwdriversmallblade-
standard
ADDITIONAL MATERIALS REQUIRED
• Powersupply-12Vdc@400mA-perNGC-30-CRM/-CRMSboard
• RJ114conductorcable
KIT CONTENTS
Item Qty Description
A
1
NGC-30-CRMorCRMS(cardrackmodulewithconnectors)
B
1
NGC-30-CTM(currenttransformermodule)
C
1
NGC-30-CR(cardrack)
D
1
NGC-30-CVM(voltagemonitoringmodule)-optional
APPROVALS/CERTIFICATIONS
Class I, Div. 2, Groups A,B,C,D
Ex nC IIC T5
Class I, Zone 2, AEx nC IIC T5
Hazardous Locations
C
A
B
D
General
SupplyVoltage
12Vdc±10%
Internalpowerconsumption
<5WperNGC-30-CRM/-CRMS
Ambientoperatingtemperature –40ºFto140ºF(–40ºCto60ºC)
Ambientstoragetemperature
–40ºFto167ºF(–40ºCto75ºC)
Environment
PD2,CATIII
Max.altitude
2000m
Humidity
0–90%non-condensing
Electromagnetic Compatibility
Immunity
HeavyIndustrial
Emission
IndustrialEnvironment
Temperature Sensors
Type
100-ohmplatinumRTD,3-wire,
α
=0.00385ohms/ohm/ºC
Canbeextendedwitha3-conductor
shieldedcableof20ohmmaximumper
conductor
Quantity
Uptofivewireddirectlytoeach
NGC-30-CRM/-CRMS
Current Sensors
Mounting
DinRail–35mm
QuantityperNGC-30-CTM
Fiveforground-currentmeasurement
Fiveforlinecurrentmeasurement
Line Current Sensors
Maxcurrent
60A
Accuracy
±2%ofreading
Ground Fault Sensor
Range
10–200mA
Accuracy
±4%ofrangeat30Alinecurrent
Voltage Sensor
Range
80–290Vac50/60Hz
Accuracy
±1%ofspan
Outputs
CRMoutputrelays
FormA3-Amp@277Vacmax50/60Hz
CRMSSSRoutputs
12Vdc@30mAmaxperoutput
AlarmRelay
FormC3-Amp@277Vacmax50/60Hz
Communication to NGC-UIT
Type
2wireRS-485
Cable
Oneshieldedtwistedpair
Length
4000ft.(1200M)maximum
Quantity
Upto52*NGC-30-CRM/-CRMSmay
beconnectedtooneNGC-UIT
Connection Terminals
Powersupply/PilotRelay/
18–12AWG(0.8-3.3mm
2
)
RTD/CommPort(RS485)
*MayrequireanRS-485repeaterifcommunicationlengthisgreaterthan4000ft.
