Omega Vehicle Security CN3271 Series instruction

PANEL CUTOUT	WIRING GUIDELINES
	A)	Measuring Inputs
	NOTE: Any external components (like Zener di-
	odes, etc.) connected between sensor and input
	terminals may cause errors in measurement due to
	excessive and/or not balanced line resistance or
	possible leakage currents.
	TC	Input
	+ 10
	_	9
		9
		Shield
	+ 10
Fig.3

_

9

Shield

Fig. 4 THERMOCOUPLE INPUT WIRING

NOTE:

1)Do not run input wires with power cables.

2)For TC wiring use proper compensating cable, preferably shielded (see Appendix B).

3)Shielded cable should be grounded at one end only.

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LHL-1-NEUTRO.pmd

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19/04/2004, 15.06

Image 6

Omega Vehicle Security CN3271 Series manual Panel Cutout Wiring Guidelines

Contents

CN3271-add2.pmd 19/08/2004 OMEGAnet On-LineService Internet e-mail Info@omega.com Contents Screw Bracket Panel Mounting Requirements Dimensions and Rear Terminal Blocks Without RS-485 With RS-485 Panel Cutout Wiring Guidelines MA, mV and V Inputs Wiring RTD Input Linear Input OUT 1 Class Logic Input for models with RS-485 onlyRelay Outputs Use cupper conductors only Inductive Loads Serial Interface 100 to 240 Vac Power Line and groundingAA/A 500 mA 250 100/240 V AC 125 mA High Low Limiter with RS-485 High Low Limiter without RS-485 Configuration KEY Functions Configuration ProcedureSerial Interface Protocol Type R5 = Offset AdjustmentR7 = Alarm action on input fault Value R2 = Decimal Point Position C2 = Rearming Mode Hi.Lo = High and low limit for special process = Alarm configuration = Rearm at Power-up Auto = Automatic rearmConstant Alarm Function = Shutdown memory P3 = Alarm Action Example for P2 = H.A.A.cExample for P2 = H.L Alarm Standby mask Function = Safety LockT1 = Timeout Selection Operating Mode Normal Display Mode Normal Display Mode to Operative Parameter Display Mode IndicatorsFlashes when alarm is on Operative Parameter Display Mode Operating Parameters Limiter function Example 1 C1 = Hi and C2 = O Example 2 C1 = Hi and C2 = Alarm functions Serial LInk optionalDevice can be connected to a host computer via serial link Error List Error MessagesError Messages Dealing with Error Messages Common mode rejection ratio General SpecificationsPower consumption 8 VA Temperature Drift CJ excluded Inputs Thermocouple Linear Inputs Outputs AlarmLogic Inputs Output Maintenance Serial Communication Interface Option Default Parameters Default Operating Parameters List LHL-A-NEUTRO.pmd 19/04/2004 Second Seconds Appendix A.3 Appendix B Thermocouple Compensating Cable Color Codes Return Requests / Inquiries Data Acquisition