Omega RD260A instruction manual Input Signal Wiring, Crimp-On Lugs

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2.2.3Input Signal Wiring !

(1)Turn off the recorder power switch.

(2)Remove the transparent cover for the input signal terminals.

(3)Connect the input signal wires to the terminals.

(4)Attach the cover on the terminals, and secure the screws.

It is recommended to use the crimp-on lugs (for 4 mm screws) with insulation sleeves for lead wire ends, but they are not required for thermocouples (TC).

WARNING

CAUTION

NOTE

Crimp-On Lugs

Suggestions to minimize noise pickup:

•Separate the measuring-signal wires from power lines and grounding lines.

•It is desirable that the measuring object is not a noise source; if not, insulate it from the measuring-signal wires and ground the object.

•It is recommended to use shielded wires to minimize noise pickup from an electrostatic induction source. The shields are connected to the recorder’s grounding terminal, if necessary. In that case, avoid two-point grounding.

•To minimize the noize from an electrostatic induction noise, twist the measuring wires (a pair of wires) in short and equal intervals.

•The grounding line must have low resistance.

In case of using a thermocouple (TC), the recorder is equipped with a reference junction compensator, so the ambient temperature around the recorder’s terminal board should be kept as stable as possible.

•Cover the input terminals with the transparent cover.

•Do not use a large-diameter wire (cross sectional area of more than 0.5 mm2) because it has a large radiation rate.

•Keep the ambient temperature as stable as possible; start/stop of a nearby fan affects the temperature.

If input signal wires are connected to two or more receivers with parallel connection, measured values sometimes affect each other. The following notes should be observed for parallel connection:

•Ground each receiver at the same point.

•Do not turn on/off the power of a receiver while other receivers are in measuring operation.

•A resistance temperature detector (RTD) cannot be used essentially in parallel connection.

To prevent an electric shock, ensure the main power switch is turned off when wiring.

Do not apply inputs exceeding the rated range as follows to prevent the recorder from damage:

•Maximum input voltage

±10 V DC for TC, and for the voltage range of 2 V DC or less ±30 V DC for the voltage range of 6 to 20 V DC

•Maximum common mode voltage 250 V AC rms (50/60 Hz)

•The installation of each input is Category II.

•To prevent an emission of electromagnetic disturbances, separate the input wires from the other wires at least 0.1 m. Over 0.5 m is recommended.

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Contents User’s Guide Servicing North America Introduction Power Supply Alternative currentDefects of Protective Grounding and Fuse Protective GroundingNecessity of Protective Grounding FuseInstallation ChaptersContents Setting A/D Integration Time Pen model Before Installation Handling PrecautionsChecking and Unpacking Checking Accessories and AppearanceAccessories No. Name Qty Remarks Spare Parts NameRemoving Packings Removing Lock Screw and Packings for TransitChecking Model Codes Checking Model CodesInstallation Site and Mounting Methods Installation SiteMounting Methods MountingExternal Dimensions Panel cutoutPen model WiringRear Panel Terminal Arrangement Dot-printing modelPower Supply Wiring Power Supply WiringInput Signal Wiring Crimp-On LugsRTD input Wiring for Input TerminalsTC input Terminal BoardOutput type Alarm Output Wiring optionContact characteristics Output capacityRemote Control Wiring option Input characteristicsComponent Names and Functions Power switch push-button type Front PanelKey panel push-key type Chart cassette Status DisplayData Display Characters on the Display Maintenance Switching Power On/OffInstalling or Replacing Chart Paper Prepare a new chart Replacement under pen-replacement mode Installing or Replacing Pens Pen modelSimple replacement Felt-tip penPlotter pen Installing or Replacing Ribbon Cassette Dot-printing model Starting/Stoping the Recording Feeding the ChartGetting the Recording Printing SamplesGetting a Digital Printout Getting a List PrintoutGetting a SET UP List Printout Dot-printing model Printing SampleSelectting the Display Display MAN except for the 1-pen modelSelecting a screen Maintenance Periodic MaintenanceIndication of Remaining Chart Length Cleaning the Carriage Shafts Battery ReplacementFuse Replacement Fuse ReplacementCalibration Pen modelDot-printing model Required instruments for calibration Calibration procedureDC Voltage Signal for Pen model same as Dot-printing model Recommended instrumentsTemperature Compensation for Thermocouple Signal Reference Junction Compensation for Thermocouple InputPen-Position Adjustment Pen model Adjusting procedureDaily OPERATION/MAINTENANCE Dot-Position Adjustment Dot-printing model Figure aDaily OPERATION/MAINTENANCE Data Setting Guides SET UP mode Operation modeSET mode Turning the function offOperation Mode Disp keySET Mode SET UP Mode Password Procedures to Enter Setting Data SET Mode Setting Input Range and Recording Span Range Skip Setting Key operationIndication Description Voltage Measurement Setting Volt Setting Volt Input Ranges DisplayKey operation Indication Description TC Type Description and RTD Type DescriptionDigital Input Setting DI Setting Difference Computation Setting Delt Setting Scale Setting SCL Setting Indication DiscriptionSetting to Obtain Square Root Sqrt Setting Key operation Indication DiscriptionENT key Explanation of Square Root Setting Offsets Offst Setting Alarms Alarm Is displayed and the setting is completed. Press Assigning Units Unit Setting Chart Speed Chart Chart Speed unit mm/hSetting Date/Time Clock FIX Auto Assigning Tags TAG Setting Messages MSG Means ‘SPACE’Setting Key-lock KEY SET UP Mode Setting Procedure Setting Alarm Hysteresis On/Off Setting A/D Integration Time Pen model Setting Upscale/Downscale TC Burnout Select Using the key. Press the ENT key Display AppearsConfiguring the Input Filter Pen Model Filter works as followsSetting for Moving Average Calculations Dot-printing model Buffer data forNth sample +1th sample Turning Offset Settings Protection On/Off Assigning Different Colors to Channels Dot-printing model To select Display, and press the ENT key SelectSetting Pen Offset Compensation On/Off Pen model, /D1 option Recorder as Viewed from the SideTurning Alarm Printing On/Off Use Key to select the display Press the ENT keySetting Periodic Printout On/Off Pen Model Chart SpeedDot-printing Model Chart Speed Turning Printing of Changes in Chart Speed On/Off Setting ProcedureSetting Procedure Selecting channel Number or Tag Changing the Temperature Unit /D2 option Select Using the key Press the ENT key. The display AppearsChanging Default Settings for Remote Operation option Turning the Settings Protection Function On/Off Initializing Settings Error Code List Error CodesRecovery Self-diagnostic Message Printout Meanings Store SET UP Settings AgaiinTroubleshooting Recorder is completely inoperativeIs the input free of noise? Glitch is found other than the previously mentioned ploblems Warrant Y/ Disclaimer OMEGA…Of Course
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