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Summary of Contents for EUTECH INSTRUMENTS Digi-Sense 68900-01
- Page 1 Digi Sense ® – INSTRUCTION MANUAL Temperature Controller R/S (Standard Model) 68900-01 68900-03 Eutech Instruments Pte Ltd Blk 55 Ayer Rajah Crescent #04-16 Singapore 139949 Tel: (65) 6778 6876 Fax: (65) 6773 0836 Website: www.eutechinst.com email: marketing@eutechinst.com 68X329501 Rev.1 02/04...
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Page 2: Table Of Contents
TABLE OF CONTENTS Title Page SAFETY PRECAUTIONS ..............1 INTRODUCTION ..................2 APPLICATION DATA ................3 DESCRIPTION ..................3 GENERAL ..................3 CONTROL PANEL DESCRIPTION ..........4 Vacuum Fluorescent Readout ............4 UP, DOWN, LEFT Arrows ............4 MENU Key ................... 4 SET Key .................. - Page 3 TABLE OF CONTENTS (Continued) Title Page Cycle Time ................. 18 Run Time ..................18 Power Up Control ............... 19 OPERATION ..................20 RUN MODE ..................20 TROUBLESHOOTING AND MAINTENANCE ........21 TROUBLESHOOTING ..............21 CALIBRATION ................21 MAINTENANCE/CLEANING ............21 SPECIFICATIONS ................
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Page 4: Safety Precautions
SAFETY PRECAUTIONS DANGER: There are no user-serviceable parts in this instru- ment. Do not remove cover, as high voltages exist inside the unit. Refer servicing to your dealer. DANGER: If thermocouples are at a high voltage, this voltage will be present at other points inside the unit. DANGER: For continued fire protection, replace fuse only with a fuse of the specified current, voltage, and type. -
Page 5: Introduction
INTRODUCTION This manual provides information for installing and operating the Tempera- ture Controller (standard model). Refer to Figure 1 for a view of the front panel of the Temperature Controller. Refer to Figures 2 and 3 for a view of the back panels of the 115 or 230 V versions. -
Page 6: Application Data
FIGURE 3. TEMPERATURE CONTROLLER, BACK PANEL (230 V MODEL) APPLICATION DATA Applications for the Temperature Controller include heating and cooling of solids, liquids, and gases. For all applications, there are certain set-up opera- tions that should be made carefully to assure optimum and safe performance. The power and type of heater, the positioning of the sensor, the amount of thermal insulation, the flash point of the heated material and the many con- troller set-up menu options are among the many variables to be considered in... -
Page 7: Control Panel Description
kit. A two-line, 16-character, 14-segment vacuum fluorescent display is used for display of operating, setup, and alarm parameters. A number of accessories can be used with this Temperature Controller, includ- ing various types of temperature sensors, heating units, cooling units (such as fans or pumps), remote alarms, and recorders. -
Page 8: Set Key
SET Key The SET key allows you to change the control setpoint (SP), using the arrow keys. Pressing the SET key again will exit the setpoint mode. ALARM Key The ALARM key enables you to acknowledge temperature control alarm con- ditions and silence the audible alarm. -
Page 9: Installation
2. Setup the operating parameters. Press MENU and follow the interactive setup selections. If your setup is the same as the factory set defaults, this step is not necessary. However, each of the setup options should be checked for desired or proper setting. Set sensor type that was connected. - Page 10 3. Plug the unit in to a correctly rated AC outlet and turn on the power using the ON/OFF switch on the back panel. Refer to Figure 5. Heater Cord Heater/Cooler Cable Connection Output Fuse ON/OFF Switch Instrument Fuse Mini-ANSI Thermocouple Jack (500 ohm Max Load Resistance) 115 V...
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Page 11: Setup Procedure
SETUP PROCEDURE a. At any time during the setup procedure, you may return to NOTES: the previous screen by pressing and holding down the LEFT arrow key and then pressing the MENU key. b. For experienced operators, a flow chart may be used for set- up and operation. -
Page 12: Temperature Scale
Temperature Scale 1. After pressing the MENU key in the THERMOCOUPLE screen, the setup will progress to the Temperature Scale selection. The Temperature scale selection has five temperature scales from which to choose: Celsius (°C), Fahrenheit (°F), Reaumur (°R'), Rankine (°R), or Kelvin (K). Refer to Figure 8. -
Page 13: Hi Alarm
3. To select alarm setpoints off, press the MENU key when the ALARM SETPOINTS OFF screen is blinking. 4. After alarm selection, press the MENU key to move on to Alarm Hyster- esis. After setting Alarm Hysteresis, press the MENU key again to move on to the Audible Alarm screen. -
Page 14: Lo Alarm
LO Alarm 1. LO Alarm activates the alarm when the PV temperature drops below the alarm temperature. Refer to Figure 12. If the Control Action is set to HEAT and the PV temperature is below the alarm temperature when the RUN Key is pressed, the alarm will not be activated. -
Page 15: Alarm Hysteresis
2. Select HILO by pressing the MENU key. The following screen will appear (refer to Figure 15). Set the alarm temperatures by using the arrow keys. Once the first alarm value is set, press the LEFT arrow key to adjust for the other alarm variable. -
Page 16: Audible Alarms
Audible Alarms Audible Alarm permits the sound of an alarm. It has two options: On or Off. Use the arrow keys to select an option and press the MENU key to advance to the Advanced Setup MENU. Refer to Figure 17. AUDIBLE ALARM FIGURE 17. -
Page 17: Over Temp Stop
SENSOR OFFSET CAL ± ± ± ± ± XX.X XXX.X °F FIGURE 19. SENSOR OFFSET CAL NOTE: Calibration can also be done using an ice bath or boiling water and adjusting the offset until 32.0 °F or 212 °F is displayed. Over Temp Stop 1. -
Page 18: Control Action
Loop break stop is designed to terminate the process currently running if the process is interrupted for a preset period of time. The loop break stop senses that nothing is happening in the process and turns the process off. Enter an elapsed time using the UP and DOWN arrow keys. For slow sys- tems, a longer time should be entered. -
Page 19: Control Mode On/Off
Control Mode On/Off 1. The Control Mode On/Off turns off the output when the actual tempera- ture exceeds the setpoint (heat control action). The output will turn on when the actual temperature falls below the setpoint temperature minus the hysteresis temperature. Refer to Figure 24. ON/OFF CONTROL HYSTERESIS XX.X °F FIGURE 24. -
Page 20: Proportional Band
2. Select an option using the arrow keys. 3. If AUTO TUNE ENABLED is selected, press the MENU key four times to advance past the PID setup to the Cycle Time screen. AUTO TUNE DISABLED is also a safety feature to prevent NOTE: accidental auto tuning. -
Page 21: Derivative Rate
Derivative Rate 1. The derivative rate reduces or eliminates overshoot. Refer to Figure 28. It is measured in seconds and must be tuned to work with the overall system cycle time. DERIVATIVE RATE XXXX SECONDS FIGURE 28. DERIVATIVE SCREEN 2. Use the arrow keys to enter the correct value and press the MENU key. Cycle Time Cycle time is the rate at which the output is cycled or changed. -
Page 22: Power Up Control
1. Use the DOWN arrow key to increment the time period desired. 2. Press the MENU key to enter your selection. Power Up Control This set up option allows you to specify one of two conditions for the tem- perature controller at turn on. Power Up Control has two options: Last State and Stopped. -
Page 23: Operation
OPERATION Once installation and setup are complete, press the RUN/STOP key to begin operation. The following screen will appear (refer to Figure 32) if a previous run was stopped before it completed. RUN OPTION CONTINUE/RESTART FIGURE 32. RUN SCREEN Select either CONTINUE or RESTART using the arrow keys and then press RUN/STOP key. -
Page 24: Troubleshooting And Maintenance
TROUBLESHOOTING AND MAINTENANCE DANGER: There are no user-serviceable parts in this instrument. Do not remove cover, as high volt- ages exist inside the unit. Refer servicing to your dealer. DANGER: If thermocouples are at a high voltage, this voltage will be present at other points inside the unit. -
Page 25: Specifications
SPECIFICATIONS Two lines of 16 characters. Four-digit Display: process value. Four-digit setpoint value. Accuracy: Type J,K,T,E and N above −100°C (−148°F): ±0.1% reading, ±0.4°C (±0.7°F) below −100°C (−148°F): ±0.1% reading, ±1°C (±1.8°F) Type R,S and B ±0.1% reading, ±1°C (±1.8°F) 0.1°... -
Page 26: Inputs
SPECIFICATIONS (Continued) Sensor Input Range/Accuracy: Thermocouples Range −200 to 1000°C Type (−328 to 1832°F) −190 to 1000°C (−310 to 1832°F) −200 to 1372°C (−328 to 2502°F) −200 to 1300°C (−328 to 2372°F) −200 to 400°C (−328 to 752°F) 200 to 1800°C (−392 to 3272°F) 0 to 1768°C (−... -
Page 27: Warranty
WARRANTY Eutech Instruments supplies this product with a ONE-YEAR warranty to be free from significant deviations from published specifications. If repair or adjustment is necessary within the warranty period, the problem will be corrected at no charge if it is not due to misuse or abuse on your part as determined by Eutech Instruments. - Page 28 APPENDIX A EN 400 Temperature Controller - Setup Mode for Standard Model...
- Page 29 APPENDIX B The following is a list of error messages that may be displayed by the Tem- perature Controller and a description of corrective action. Upper Lower Display Display Action normal OVER TEMP STOP PV exceeded OVER TEMP STOP setting in user setup. normal LOOP BREAK STOP No change in PV with output...
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Page 30: Accessories
Temperature Controller Accessories EUTECH INSTRUMENTS STANDARD MODELS 68900-01 115V 68900-03 230V Catalog # MODEL DESCRIPTION 68900-50 All models Panel Mount Kit 68900-98 All models Heater Sizing Software 50001-78 230V only Input Cord - IEC320/NEMA 6-15P 68900-94 230V only Heater Output Connector, IEC 10A...