YOKOGAWA HGM300, RDM800 User Manual
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INTRODUCTION!TO!THE!HGM300/RDM800!YOKOGAWA!REFRIGERANT!
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Welcome!ñ!This!is!an!introduction!the!Yokogawa! HGM300/RDM800!refrigerant! monitor! system.!As! you!open!the!
shipping!carton!locate!the!following!items;!
HGM300!ñ!Manufactured! to!your!order!specifications,!that!is,!number!of!zones,!type!of!air!sample!fittings!and!dual!
4-20ma!DC!option!(if!ordered)!!!!
RDM800!ñ!Remote!Display!Module!(if!ordered).!
Charcoal!filter!with!ìTî!bolt!bracket;!line! end!filter!assembly!(quantity!dependant!on!number!of!zones!ordered!ñ!for!
4! zones! ñ! 5! filters,! for! 8! zones,! 9! filters,! 12! zones! 13! filters! and! 16! zones! 17! filters.! Do! not! use! a! filter! on! the!
exhaust!line).!
Operations!manual!
Optional! items! ñ! Audio/Visual! alarms,! visual! alarm,! audio! alarm,! air! sample! tubing,! etc.! as! ordered.
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Proper!mounting!of!HGM300!and!RDM800!-!!
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HGM300!Mounting!Specs!!!!
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7.0"
14.0"
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RDM800!Mounting!Specs!
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7.0"
9.0"
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Rev.!10/22/01!!
HGM300/RDM800!mini!manual.doc
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The! HGM300! should! be! centrally! located! in! the! mechanical! room! and! be! readily! accessible! for! easy! visual!
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monitoring! and! servicing.! Air! sample! tubing! may! be! run! in! lengths! up! to! 500í.! The! fresh! air! purge! line! should!
draw! from!an! area ! that!does! not! contain!any! refrigerant! gas! and! cannot! exceed! 300í! in! length.! The! exhaust!
line!should!run!to!an!out!side!location!if!possible.!The!length!of!the!exhaust!line!cannot!exceed!100í.!!
!Ideally,!two!to!three!pick!up!points!spaced!around!each!chi ller!will!provide!sufficient!coverage.!It!may!be! necessary!
to!perform!a!ìsmokeî!test!of!the!mechanical!room!to!determine!the!best!locations.!The!smoke!test!would!provide!the!
pattern!of!air!currents!present!in!the!mechanical!room.!
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HGM300/RDM800!Refrigerant!Gas!leak!monitor!mechanical!room!placement!
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Sample! Inlet!
Pickup!Point!
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Picture!of!HGM300!alarm!wiring)!
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!The!RDM800!should!be! mounted! outside! of!the! mechanical! room!or! at!least!just!inside!of!a!door! to! the!room.!
This!is!the! ì split! architecture! designî ! for! safety!of! the!operator.!The! RDM800!can! be! located! up! to! 4500í ! from!the!
HGM300.!The! RDM800! is! the! man! machine! interface! by!which! you! program! the! HGM300,! acknowledge! alarms!
and!observe!conditions!inside!of!the!mechanical!room.!Note!that! there!are!two!additional!alarm!relay!contacts!in!the!
RDM800!that!can!be!programmed!to!alarm!with!ì leak,!spill,!evacuate,!fault!or!monitor!onî .!
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Rev.!10/22/01!!
Exhaust Fan
Chiller!
Outside Hallwa
Machine Room
Aux. Horn/Strobe
Remote Alarm
HGM300
Halo
Monitor
Sample Inlet Pickup Points
HGM300/RDM800!mini!manual.doc
RDM800
Remote
Display
Module
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WIRING!THE!HGM300!
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Dual!4-20!mAdc!
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Outputs!
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RS485!
AC!Power!(In!/!Out)!--!RS485!--!4-20!mAdc!
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Node!Address!
Switch
On/Off!Power!
Switch
Main!120Volt!Power!
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(Used!to!supply!power!for!audio/visual!alarms)!
Auxiliary!Power!120Volt!
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Leak,!Spill,!Evac uate!&!
Fault!alarm!wiring!block
Rev.!10/22/01!!
HGM300/RDM800!mini!manual.doc
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WIRING!THE!RDM800
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HGM300!RS485!
Connector!
Terminator!for!
Building!Automation!
RS485!Connecto
Building!
Automation!
System!RS485!
Connector!
Terminator!for!
HGM300!RS485!
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Connector!
RDM800!
relays!
Main!Power!
Rev.!10/22/01!!
HGM300/RDM800!mini!manual.doc
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HGM300!Relay!Wiring!
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!!!!!!!!!!!!LEAK!!!!!!!!!!!!!!!SPILL!!!!!!!!!!EVACUATE!!!!!!!FAULT!
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Relay
#1
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COMMON
Strobe!
Relay
NC
#2
NC
NO
COMMON
Relay
#3
NO
COMMON
Relay
#4
NC
COMMON
NO
Horn!
NC
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!!!!Aux.!Power! ! !!!!Main!Power!
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Jumper!the!ëNeutralí!of!the!auxiliary!power!connector!to!the!ëCommoní!on!the!relay!block.!!!
Connect!one!end!of!strobe!or!horn!to!the!ëNOí!of!whichever!level!of!alarm!is!appropriate!for!application.!
The!other!end!of!strobe!or!horn!is!connected!to!a!120VAC!power!source,!or!to!the!ëLineí!of!the!auxiliary!
power!connector!(Max!5AAC).!
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Rev.!10/22/01!!
Line!
Neutral!
eutral!
Line! !
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HGM300/RDM800!mini!manual.doc
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Power!up!the!monitor!system.!(Warm!up!time!is!15!minutes)!
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Start!up!checkpoints!!!
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a)! All!b uttons!on!RDM800!ìchirpî!when!pressed.!(Contact!the!factory!if!the!do! not! ìchirpî.!See!last!page! for!
whom!to!call)!
b)! Communication!connection!between!HGM300!and!RDM800!
c)! Checking!node!address!for!HGM300ís!(multiple!HGM300î s!also)!
d)! Terminator!positions!
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TERMINATOR!
!!!!!!!!!ìINî!! MULTIPLE!HGM300íS!WITH!RDM800
RMD800!
!!!!!!!!!!!RS-485!! RS-485!CONNECTIONS!BETWEEN!HGM300ís!!
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HGM300!
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UNIT!1!
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ODE!1!
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TERMINATOR!! !!TERMINATOR!! ! TERMINATOR!! !!TERMINATOR!
!!!ì OUTî ! ! !!!!!!!!ìOUTî !! ! ! !!!!!!ì OUTî ! ! !!!!!!!!ìINî!
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The!HGM300!may!be!connected!to!a!building!automation!via!the!RS-485!connector.!The!node!address!
switch!on!each!HGM300!may!be!set!from!ì0î!to!ì16î!in!order!to!conform!to!the!building!automation!
system!requirements.!Units!set!to!a!ì0î!or!ì1î!address!both!respond!to!messages!from!the!RDM800!as!
address!ì1î!therefore!you!should!not!have!a!unit!set!to!ì0î!and!another!set!to!ì1î!on!the!same!network.!If!
the!HGM300!network!is!connected!directly!to!a!building!automation!system!
the!RDM800.!However,!the!RDM800!has!two!communications!ports,!an!ìupstreamî!port!(labeled!TO!
BMS)!and!a!ìdownstream!port!(labeled!TO!MONITORS).!A!BMS!node!may!be!connected!to!the!upstream!
RDM800!port!while!the!downstream!RDM800port!talks!to!the!HGM300ís.!In!this!case,!the!BMS!is!talking!
ìthroughî!the!RDM800!to!the!HGM300ís,!but!not!physically!on!the!HGM300/RDM800!network.!
Note!ñ!If!the!HGM300!is!not!at!the!end!of!the!line!in!a!series!connection,!then!the!terminator!on!the!HGM!
must!be!set!to!ìOUT.î!!Also,!each!end!of!the!network!must!have!the!terminator!set!to!ìINî.!
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!!!!!!!!TERMINATOR!
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HGM300!
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!!!!!!!TERMINATOR! !!!!!!!!!!TERMINATOR!! TERMINATOR!! TERMINATOR!
!!!! !ìINî! ! !!!! !!ì OUTî !! ! !!!!!!ì OUTî ! ! !!!!!!!!!ìINî!
Rev.!10/22/01!!
ODE!1!
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! NOTE!ñ!THE!LAST!HGM300!OR!RDM800!ON!EITHER!END!OF!THE!NETWORK!
MUST!HAVE!THE!TERMINATOR!IN!THE!ìINî!POSITION!AND!ALL!OTHER!
UNITSMUST!HAVE!THEIR!TERMINATORS!IN!THE!ì OUTî !POSITION.!
! NOTE!ñ!TOTAL!LENGTH!OF!RS-485!CABLE!CANNOT!EXCEED!1500m.!!(Use!
instrument!cable!20!gage!multistrand!shielded!and!twisted!pair!ñ!similar!or!equal!to!
Beldon!cable!#8762.)!
THE!RDM800!AND!HGM300!UNIT!4!TERMINATOR!MUST!BE!IN!THE!ìINî!
POSITON.!!HGM300!UNITS!1,!2,!&!3!MUST!BE!IN!THE!ì OUTî !POSITION.!
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HGM300!
UNIT!2!
Multiple!HGMís!
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HGM300!
UNIT!3!
ODE!2!
Connecting!To!A!Building!Automation!System!
BMS!
HGM300!
ODE!2!
ODE!3!
HGM300!
ODE!3!
HGM300!
UNIT!4!
ODE!4!
may!not!be!connected!to!
HGM300!
ODE!4!
HGM300/RDM800!mini!manual.doc
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