Chromalox 3901 Manuel d'utilisateur

Chromalox3901Chromalox®Overtemperature ControllerIssue DateDec 1993User’s Manual0037-75121UL®FMAPPROVED

8 Chromalox 3901 User’s ManualSensor Input ConnectionsThe thermocouple input is connected at terminals 7(+) and 8 (-) as indicated by the wiring decal

Chromalox 3901 User’s Manual 9Section 3OperationBefore applying power to the controller andproceeding with Operation, verify that all wiring iscorrect

10 Chromalox 3901 User’s ManualFigure 3.1Front PanelIdentificationREADTEMPALARM°FRESETSET POINT8 5 4Hold Pushbutton toDisplay ProcessTemperatureReleas

Chromalox 3901 User’s Manual 11RemoteAlarm ResetThe Remote Alarm Reset works exactly like the AlarmReset function described above, except that the rel

12 Chromalox 3901 User’s ManualChromaloxScrewdriverSet Point LimitFigure 3.2Set Point LimitPotentiometerController Bottom ViewTo adjust the set point

Chromalox 3901 User’s Manual 13Section 4Calibration☛The 3901 controller has been calibrated and tested atthe factory prior to shipment. Calibration on

14 Chromalox 3901 User’s ManualCalibrationProcedure(continued)3. Set the sensor simulator to a maximum (900°F forJ T/C, 1600°F for K T/C). While press

Chromalox 3901 User’s Manual 15Section 5SpecificationsAlarm OutputRepeatability +/- 1°F or 1°CResetDifferential5°F or 3°C, nominalAlarm Relay Normally

16 Chromalox 3901 User’s ManualGeneralInstrumentPower120 or 230 Vac, +10%, -15%, 50/60 Hz, 10 VAnominal power consumptionOperatingEnvironment30 to 130

Chromalox 3901 User’s Manual 17Section 6Warranty and ReturnThe warranty complies with the Federal Lawapplicable to products manufactured after Decembe

i Chromalox 3901 User’s ManualTable of ContentsSectionsSection Topic Page1 Introduction to the 3901 Controller 12 Installation 33 Operation 94 Calibra

Chromalox 3901 User’s Manual 1The Chromalox 3901 Overtemperature Controllergives you reliable and economical digital indicating,overtemperature contro

2 Chromalox 3901 User’s ManualBefore YouInstallBefore proceeding with installation and operation ofyour controller, it is important that you identify

Chromalox 3901 User’s Manual 3Section 2InstallationInspection &UnpackingOn receipt of your 3901 controller, immediately makenote of any visible da

4 Chromalox 3901 User’s ManualTo remove the back cover, loosen the two back coverscrews shown in Figure 2.1 and lift the cover off ofthe controller ch

Chromalox 3901 User’s Manual 51. Cut a square mounting hole (3.6” x 3.6”) in thepanel or mounting surface and place the controllerthrough the cutout.2

6 Chromalox 3901 User’s ManualImportantWiringInformationTo insure that the 3901 controller performsoptimally, it is imperative that you read this sect

Chromalox 3901 User’s Manual 7Step 3WiringMake all electrical wiring connections on the back ofthe controller before power is applied to the unit.All