1. Manuals
  2. Brands
  3. Thermotron Manuals
  4. Controller
  5. 3800
  6. Operator's manual

Thermotron 3800 Operator's Manual

Programmer/controller
Hide thumbs
Table of Contents

Advertisement

Quick Links

A Venturedyne, Ltd. Company
3800 Programmer/Controller
Operator Manual
Revision 3: April 16, 2009
This generic manual is intended for reference purposes only and is not intended to
be used to operate your equipment. For operating instructions and a description of
the features used on your specific control system, see the hard copy manual set for
your Thermotron product.
This manual provides the most current generic operating instructions for this
controller at the time of its revision date. Therefore this manual may not include
some recent software changes. This manual may also cover features that are not
available on your current controller. Examples within this manual are for typical
configurations that may not apply to the configuration of your control system.

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 3800 and is the answer not in the manual?

Questions and answers

Related Manuals for Thermotron 3800

Summary of Contents for Thermotron 3800

  • Page 1 A Venturedyne, Ltd. Company 3800 Programmer/Controller Operator Manual Revision 3: April 16, 2009 This generic manual is intended for reference purposes only and is not intended to be used to operate your equipment. For operating instructions and a description of the features used on your specific control system, see the hard copy manual set for your Thermotron product.
  • Page 2 All relevant issues have been considered in the preparation of this document. Should you notice an omission or any questionable item in this document, please feel free to contact the Thermotron Product Support group between 8:00am and 4:30pm Eastern Standard Time at (616) 392-6550.

  • Page 3: Table Of Contents

    3800 Operator Manual Table of Contents Table of Contents Section 1: Getting Started Introduction to the 3800..........................1-1 Display Module............................1-2 • Accessing Other Screens and Functions .....................1-2 • Context Sensitive Help System ......................1-3 3800 Basic Functions..........................1-3 • Control Channels..........................1-3 • Chamber Conditioning System Signals....................1-3 •...
  • Page 4 Table of Contents 3800 Operator Manual Section 3: Programming the 3800 Programmed Cycling ..........................3-1 Creating a New Program..........................3-3 Loading a Pre-Programmed Test .......................3-5 Editing a Program Name..........................3-6 Viewing or Editing a Program ........................3-7 Deleting a Program ............................3-8 Section 4: Therm-Alarm Functions Introduction..............................4-1...

  • Page 5: Section 1: Getting Started

    NOTE: The 3800 can display only two channels at a time: either channels 1 and 2 or channels 1 and 3. If your 3800 is configured for three channels, press the CH 2 and CH 3 keys to switch between displayed channel pairs.

  • Page 6: Display Module

    START on the last line of the 3800 display. For most 3800 operations you start from the main screen (shown above) and use function keys and soft keys to access other screens and functions. To return to the main screen from any other screen, press the ESC key repeatedly until the main screen is displayed.

  • Page 7: Context Sensitive Help System

    Control Channels Control channels receive inputs from thermocouples and/or other sensing devices used to monitor the environmental conditions inside the chamber’s test space. The 3800 adjusts its control outputs based on those inputs. • Typically, channel 1 uses a dry bulb thermocouple sensor mounted in the chamber airflow to sense air temperature.

  • Page 8: Auxiliary Outputs

    Running in Manual Mode Manual mode allows you to operate the 3800 controller functions. Manual mode operates the chamber using set point and rate of change (ramp rate) settings. You can enter manual mode when the system is in stop mode. You also can enter manual mode from hold program mode if, while running a program, you want to perform a special operation in manual mode and then continue with the program.

  • Page 9: Manual Throttle Mode

    AUX GRP1 and AUX GRP2 (auxiliary groups 1 and 2): Enter the numbers of the auxiliary relays you want to activate. Auxiliaries are active only when the 3800 is running. For more information on auxiliary relays, see “Auxiliary Outputs” earlier in this section.
  • Page 10 Getting Started 3800 Operator Manual You will be asked if you want to enter manual throttle mode. Press YES. A small m will appear next to the throttle setting to indicate manual throttle mode. To adjust the manual throttle setting, press the edit icon.

  • Page 11: Running A Program

    NOTE: The sample screens in this procedure show the display for a two-channel 3800 configuration. The 3800 can display only two channels at a time: either channels 1 and 2 or channels 1 and 3. If your 3800 is configured for three channels, press the CH 2 and CH 3 keys to switch between displayed channel pairs.

  • Page 12: Delayed Start

    NOTE: You cannot run another program or enter manual mode while a delayed start is pending. To verify, modify, or cancel a delayed start, see “Delayed Start” below. When you press START, the 3800 will enter run program mode and the chamber status...

  • Page 13: Edit From Hold

    Once the interval is run and completed, the temporary values are discarded. The next time the interval is run, the original programmed values apply. NOTE: In hold program mode the 3800 will maintain the chamber test space at the last set point.

  • Page 14: Chamber Status

    Press MONITR to review the values of any current monitor channels. These channels are used for monitoring processes within the chamber. If the low or high limit is exceeded for any channel, the 3800 alarm outputs will be activated. For more information on monitor channels, see “Viewing the Monitor Channel Readings” in Section 2 of this manual.

  • Page 15: Section 2: System Setup

    3800 Operator Manual System Setup Section 2: System Setup This section provides instructions for viewing or adjusting the following functions: • • • Temperature scale Process alarms Therm-Alarm calibration • • • Screen saver activation Access level and password Real time clock •...

  • Page 16: Viewing The Software Version

    System Setup 3800 Operator Manual Viewing the Software Version From the main screen, press SETUP, then MORE, then MORE. The third setup screen will appear: From this screen you can see the software version. Adjusting the Auxiliary Cooling Settings Some chambers are equipped with optional liquid nitrogen (LN ) or carbon dioxide (CO ) auxiliary cooling systems.

  • Page 17: Adjusting Standard Control Parameters

    Control parameters adjust the performance of the chamber around the set point. As the chamber nears the set point, the 3800 adjusts the chamber throttles to provide a smooth ramp to the set point. To prevent overshooting and oscillation around the final set point, the refrigeration, heating, and other systems must be damped as they approach the set point.
  • Page 18 System Setup 3800 Operator Manual For the optimal combination of performance and quality, each control channel is tuned to be critically damped. This occurs when the process variable overshoots the set point slightly and then oscillates around the set point slightly until it stabilizes at the set point.
  • Page 19 18. Once the parameters for the first channel have been tuned up, the next channel’s parameters can be tuned up. 19. Once you have finished tuning up all the channels, record the parameter settings on the duplicate master sheets located with the Configuration Data Sheets. Keep these values on record with the 3800 manual. THERMOTRON...

  • Page 20: Adjusting Ptc Control Parameters

    Gain Parameters for PTC The gain parameter is a coarse adjustment to the PTC control algorithm. The larger the gain, the longer the 3800 will wait to start slowing down the throttle as the load temperature approaches the load set point.

  • Page 21: Integral Time Parameters For Ptc

    3800 Operator Manual System Setup Integral Time Parameters for PTC The integral time parameter is a fine adjustment to the PTC control algorithm. The integral time parameter is used when the process variable nears the set point and the throttle is backing off. The integral time parameter adjusts the throttle to take the droop out of the proportional band setting and allows the chamber to reach the set point.
  • Page 22 System Setup 3800 Operator Manual Record the original parameter settings From the main screen, press MN/PRG, then press MANUAL. The manual mode screen will appear. Use the left and right arrow keys to cycle through the values shown on the last line of the display until CONTROL PARAMETERS appears.
  • Page 23 21. Record the parameter settings on the duplicate master sheets located with the Configuration Data Sheets. Keep these values on record with the 3800 manual. THERMOTRON This generic manual is not intended to be used to operate your equipment.

  • Page 24: Setting Process Alarms

    Each channel of the 3800 can be programmed to activate an alarm if the temperature, humidity, or other process variable exceeds high or low limits you select. If the variable exceeds the high or low limit, the 3800 enters stop mode.

  • Page 25: Changing The Access Level Or Password

    Changing the Access Level or Password The access level function allows you to select from seven different levels of access to the 3800 functions. The following table provides a general overview of which functions are available at each access level.

  • Page 26: Viewing Computer Interface Settings

    Selecting unused (unu) indicates that the system event is not used. A system event will only be active when the channel associated with it is selected and running. Variable (Var) indicates which variable the 3800 will monitor for the selected channel. The available variable types are: •...

  • Page 27: Setting Up System Events

    3800 Operator Manual System Setup Logic indicates the type of system event. This parameter determines when the 3800 will activate and deactivate the system event. The available logic types are: • Range: The system event output will be activated when the variable is within the selected range (between the low and high parameters, inclusive).

  • Page 28: Viewing The Network Setup

    From the main screen, press SETUP, MORE, MORE, then press NET. The network setup screen will appear: For information on network setup, refer to the 3800 Computer Interface Manual. 2-14 This generic manual is not intended to be used to operate your equipment. THERMOTRON...

  • Page 29: Calibrating The Therm-Alarm Input

    NOTE: This calibration procedure requires a type ‘T’ thermocouple simulator. Before beginning any calibration procedure, make sure the 3800 programmer/controller’s temperature scale is set to Celsius. From the main screen, press STATUS, then use the left and right arrow keys to cycle through the values shown on the last line of the display until MONITR | SERVCE | T-ALRM appears.

  • Page 30: Adjusting The Real Time Clock Settings

    Press DATE or TIME. Use the left and right arrow keys and the numeric keypad to enter a new date or time. The 3800 has a leap year function, eliminating the need to reset the date after February 29 of each leap year.

  • Page 31: Viewing The Monitor Channel Readings

    The monitor channels screen allows you to view the real-time environmental readings of the input channels configured as monitor-only channels. The 3800 can have up to eight monitor channels. Monitor channels read the same input types as control channels. For more information on your chamber’s monitor channels, refer to your chamber manual.
  • Page 32 System Setup 3800 Operator Manual The selected service message setup screen will appear: To change the text of the message that will be displayed when the interval setting expires, use the alphanumeric keypad. NOTE: Service messages can be up to 19 characters long.

  • Page 33: Viewing Diagnostic Screens

    Thermotron Technical Liason. From the main screen, press SETUP, MORE, MORE, MORE, then DIAG. The first diagnostics screen will appear: Please call the Thermotron Product Support group at (616) 392-6550 between 8:00 a.m. and 4:30 p.m. Eastern Standard Time for assistance.
  • Page 34 System Setup 3800 Operator Manual 2-20 This generic manual is not intended to be used to operate your equipment. THERMOTRON...

  • Page 35: Section 3: Programming The 3800

    During stress screening, process variables are changed as quickly as possible to force any early life failures on each product. In two-channel mode the 3800 is programmed to control humidity as well as temperature. NOTE: Other operations, such as electronic testing of the products, are not a function of the 3800.
  • Page 36 The interval time has two methods of control: If you enter a Time greater than zero, the 3800 performs a temperature ramp. This cycles the temperature evenly to the final temperature within the programmed time. If too short a time is programmed, the 3800 will transition to the next interval when the time runs out anyway.

  • Page 37: Creating A New Program

    When you have selected an empty program slot, press NEW. This screen will appear: • To load one of the pre-programmed tests included with the 3800, press PPT and follow the instructions in “Loading a Pre- Programmed Test,” later in this section. •...
  • Page 38 +/- deviations (DV) control how far you will allow the selected channel’s process variable to be from set point. Enter a positive number only — the 3800 will monitor both plus and minus deviations and activate the deviation alarm if the values are exceeded. NOTE: In an interval with guaranteed soak (GSoak) enabled, the program will wait in the interval until all deviations are satisfied before moving on to the next interval.

  • Page 39: Loading A Pre-Programmed Test

    Press NEW. The create a new program screen will appear: To load one of the pre-programmed tests included with the 3800, press PPT. The pre- programmed tests screen will appear: Use the CLR key to cycle through the available pre-programmed tests.

  • Page 40: Editing A Program Name

    Programming the 3800 3800 Operator Manual Editing a Program Name From the main screen, press MN/PRG, then press PROG. The current program list screen will appear: Select the program you want rename. Use the CLR key to cycle through the 10 program slots.

  • Page 41: Viewing Or Editing A Program

    3800 Operator Manual Programming the 3800 Viewing or Editing a Program From the main screen, press MN/PRG, then press PROG. The current program list screen will appear: Select the program you want to view or edit. Use the CLR key to cycle through the 10 program slots.

  • Page 42: Deleting A Program

    The pre-programmed tests themselves, which are stored in the 3800’s memory, cannot be deleted. When the program you want to delete is displayed, press DEL. The confirmation screen will appear: To permanently delete the program, press YES.

  • Page 43: Section 4: Therm-Alarm Functions

    For Therm-Alarm hardware setup instructions, see the 3800 Technical Manual. • For information on operating the Therm-Alarm from a host computer, see the 3800 Computer Interface Manual. THERMOTRON This generic manual is not intended to be used to operate your equipment.

  • Page 44: Therm-Alarm Operating Modes

    If you are testing expensive products, you should have an additional back-up product protection device. If you are testing products with live electrical loads, you should install additional power cutoffs. Please call Thermotron Industries if you have any questions on additional product protection.

  • Page 45: Viewing The Therm-Alarm Status

    MONITR | SERVCE | T-ALRM appears. Press T-ALRM. • If your 3800 is equipped with one Therm- Alarm, go to step 3. • If your 3800 is equipped with more than one Therm-Alarm, this selection screen will appear.

  • Page 46: Changing The Therm-Alarm Settings

    MONITR | SERVCE | T-ALRM appears. Press T-ALRM. • If your 3800 is equipped with one Therm- Alarm, go to step 3. • If your 3800 is equipped with more than one Therm-Alarm, this selection screen will appear.

  • Page 47: Alarm Mute And Reset Mode Functions

    CAUTION: Restoring the Therm-Alarm’s factory default settings should be done only with the assistance of a Thermotron Technical Liaison Advisor. Please call the Thermotron Product Support group at (616) 392-6550 between 8:00 a.m. and 4:30 p.m. Eastern Standard Time for assistance.
  • Page 48 MONITR | SERVCE | T-ALRM appears. Press T-ALRM. • If your 3800 is equipped with one Therm- Alarm, go to step 3. • If your 3800 is equipped with more than one Therm-Alarm, this selection screen will appear.
  • Page 49 3800 Operator Manual Therm-Alarm Functions Follow the directions on the screen and then press NEXT. Follow the directions on the screen and then press NEXT. THERMOTRON This generic manual is not intended to be used to operate your equipment.
  • Page 50 Therm-Alarm Functions 3800 Operator Manual This generic manual is not intended to be used to operate your equipment. THERMOTRON...

  • Page 51: Appendix A: Glossary

    A function that causes the 3800 to wait until a specified date and time before running a program. deviation: The difference between the process variable (actual test space or product condition) and the set point (assigned test space or product condition).
  • Page 52 A setting that controls how fast the temperature, humidity, or other process variable is to be cycled from the initial value to the final value. key beep: An audible beep that is sounded each time a 3800 programmer/controller key is pressed, unless this feature is disabled.
  • Page 53 A Therm-Alarm function; the hottest or coldest temperature experienced during the most recent alarm condition. monitor channel: A channel used by the 3800 for monitoring processes within the chamber. If the high or low limit is exceeded for any channel, the 3800 alarm outputs are activated.
  • Page 54 A 3800 programmer/controller function that keeps track of the time and date. relative humidity (RH): A percentage of the maximum amount of moisture that the air can hold at a given temperature and pressure.

Table of Contents

Save PDF