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Alpha Omega Instruments 800 Series Instruction Manual

Thermoelectric cooler controller
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ALPHA OMEGA
INSTRUMENTS
Series 800 and Series 850
THERMOELECTRIC COOLER CONTROLLER
This manual was written for users of either the Series 800 Thermoelectric Cooler Controller
or the rack mounted Series 850 Thermoelectric Cooler Controller. Where differences in the
two controllers are important to distinguish, those distinctions have been so noted.
30 Martin Street, Cumberland, RI 02864
Phone:
401.333.8580
Fax:
401.333.5550
Email: info@aoi-corp.com
INSTRUCTION MANUAL
VERSION 4.1 COPYRIGHT 2004, ALPHA OMEGA INSTRUMENTS
CORP. ALL RIGHTS RESERVED INCLUDING THE RIGHT TO
REPRODUCE THIS MANUAL, OR ANY PORTION THEREOF, IN
ANY FORM.

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Do you have a question about the 800 Series and is the answer not in the manual?

Questions and answers

Ana Rentsch
July 3, 2025

Our Scanner (series 800) does not proceed to the Fuoro step if the max energy level is set to 80kV (and 100mA for flux, at 40 microne) but it does work when it's at 95kV or higher.

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Summary of Contents for Alpha Omega Instruments 800 Series

  • Page 1 30 Martin Street, Cumberland, RI 02864 Phone: 401.333.8580 VERSION 4.1 COPYRIGHT 2004, ALPHA OMEGA INSTRUMENTS CORP. ALL RIGHTS RESERVED INCLUDING THE RIGHT TO Fax: 401.333.5550 REPRODUCE THIS MANUAL, OR ANY PORTION THEREOF, IN ANY FORM.
  • Page 2 Alpha Omega Instruments' option, items which are returned to it prepaid within two (2) years from the date of shipment and found to Seller’s satisfaction to have been so defective. In no event shall Alpha Omega Instruments Corp. be liable for consequential damages.
  • Page 3 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page ii This page intentionally left blank...

  • Page 4: Warnings

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page iii WARNINGS To avoid the risk of fire or electrical shock, do not expose the outside surfaces of the Series 800/850 temperature controller to rain or water spray.

  • Page 5: Table Of Contents

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page iv TABLE OF CONTENTS Page Item Number Warranty Warnings RF Disclaimer Air Flow Table of Contents Section 1: Thermoelectric Cooler Controller Specifications Section 2: Thermoelectric Cooler Controller Description...

  • Page 6: Thermoelectric Cooler Controller Specifications

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 1 Section 1.0 THERMOELECTRIC COOLER CONTROLLER SPECIFICATIONS The following pages detail the specifications of the Series 800/850 Thermoelectric Cooler Controllers. Each model includes the capability of adding a Power Booster Module (PBM) which is simply another power supply without the display and sensor interface.
  • Page 7 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 2 SPECIFICATIONS FOR THE SERIES 800 THERMOELECTRIC COOLER CONTROLLER Control Uni-polar or Bi-polar, constant current, PID (Proportional, Integral, Derivative) with Auto-tuning. User can select P, or P&I control only.
  • Page 8 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 3 SERIES 800 FRONT VIEW (SHOWN WITH POWER BOOSTER MODULE) SERIES 800 REAR VIEW (SHOWN WITH POWER BOOSTER MODULE)
  • Page 9 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 4 SPECIFICATIONS FOR THE SERIES 850 THERMOELECTRIC COOLER CONTROLLER Control Uni-polar or Bi-polar, constant current, PID with Auto-tuning. User can select P, or P&I control only. Compliance Voltage...
  • Page 10 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 5 SERIES 850 FRONT VIEW SERIES 850 REAR VIEW...
  • Page 11 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 6 This page intentionally left blank...

  • Page 12: Thermoelectric Cooler Controller Description

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 7 SECTION 2.0 THERMOELECTRIC COOLER CONTROLLER DESCRIPTION Both the Series 800 and Series 850 Thermoelectric Cooler Controllers represent a significant advance in the state-of-the-art of thermoelectric cooler (TEC) controllers. It...
  • Page 13 20 A @ 15 VDC Power Booster Module Alpha Omega Instruments has gone beyond the conventional approach to powering TECs by developing a unique Power Booster Module for each of its TEC controllers. Users can increase the output power of their Series 800 / 850 TEC Controller by adding one or more Series 800 or 850 Power Booster Modules.
  • Page 14 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 9 STANDARD FEATURES Temperature Alarm Relay The Series 800 / 850 TEC Controllers are equipped with a temperature alarm relay, configurable by the user as a high alarm, low alarm, or both a high and low alarm.
  • Page 15 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 10 This page intentionally left blank...

  • Page 16: Series 800/850 Thermoelectric Cooler Controller Connections

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 11 Section 3.0 SERIES 800/850 TEC CONTROLLER CONNECTIONS The following section explains the hardware connections on the Series 800/850 temperature controllers. REAR PANEL ITEM DESCRIPTIONS Heat Sink Do not block the flow of air coming out of the holes in the heat sink on the rear of the controller.
  • Page 17 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 12 AC power input The AC power connector is located on the rear panel with the fuses located in the receptacle. Check the ratings on the fuse for the correct ratings, and only install replacement fuses with the correct rating.
  • Page 18 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 13 TEC Power Output Connector The Second connection to be made is to the TEC. ç Make sure that the sensor is properly wired, the controller is properly programmed, and the power is OFF before connecting the TEC.
  • Page 19 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 14 TEC WIRING If the temperature should go in the “wrong” direction, check to make sure that the TEC is configured as shown below: Thermistor Heat Sink Also, if using a thermistor as shown, the Series 800/850 temperature controller will display Kohms on the display.
  • Page 20 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 15 CHECKLIST Never connect either of the thermoelectric cooler leads to ground! This results in excessive current to flow causing possible damage to the cooler. Note: slightly overrated fuses have been installed in the Series 800/850 TEC Controllers that should protect the TEC against most faults.
  • Page 21 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 16 Series 850 The Series 850 TEC Controller is equipped with two (2) 7.5 Ampere 250 Volt AC Line fuses within the modular AC Input receptacle. If the Instrument does not power up when the power switch is turned ON, or ceases operation while powered ON, place the power switch in the OFF position and remove the modular AC Power Cord.

  • Page 22: Temperature Sensor Selection & Setup

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 17 Section 4.0 TEMPERATURE SENSOR SELECTION & SETUP Before proceeding, have the mating connector supplied with the Series 800/850 TEC Controllers ready to be wired. The following pages illustrate the types of temperature sensors supported by the Series 800/850 TEC Controllers .
  • Page 23 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 18 FRONT PANEL CONTROLS This page is here for reference while configuring the Series 800/850 TEC Controllers for a particular sensor type. Status LED's [2%00] Actual Temperature [2%00} ¿...
  • Page 24 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 19 HARDWARE CONCEPTS Output 3 Output 3 is an internal fail-safe relay that allows setting of temperature limits which if exceeded, will result in the output to the TEC(s) to be shut down (turned off). Using...
  • Page 25 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 20 AUTO-TUNING THE AUTO-TUNING PROCESS USES TWO SEPARATE VARIABLES THAT MUST BE SET IN ORDER TO PROTECT THE TEC FROM OVER CURRENT IN EITHER DIRECTION. DO NOT AUTO-TUNE A TEC OR LOAD BEFORE SELECTING APPROPRIATE CURRENT LIMITS FOR THE TEC OR LOAD BEING USED WITH THE TEMPERATURE CONTROLLER.
  • Page 26 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 21 SENSOR CONFIGURATION TABLE Sensor Type / Display Jumper Settings Rear Panel Connections THERMISTOR-100K Thermistor Thermistor Range = 0 to 99.99 kohms [`)00] to [9(99] Kohms Mating Connector...
  • Page 27 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 22 SENSOR PROGRAMMING & CONFIGURATION 0 to 100K Thermistor This procedure shows how to configure the Series 800/850 TEC Controllers for use with a 0 to 100K Thermistor.
  • Page 28 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 23 Cycle through using ‰ to select the parameters to change in the bottom display. Change the parameters by using the ¿ or ¯ arrows. Note: If option desired is unavailable, then first...
  • Page 29 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 24 0 to 1M Thermistor This procedure shows how to configure the Series 800/850 TEC Controllers for use with a 0 to 1M Thermistor. ç Before changing the jumper settings on the Series 800/850 TEC Controllers, remove ALL connections (including the AC power) from the rear of the instrument and remove the cover.
  • Page 30 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 25 [inp1] Using the ‰ button, cycle through until you reach in the top display, then [Out1] press the ¿ or ¯ arrows until you reach in the top display, then press ‰.
  • Page 31 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 26 AD590 This procedure shows how to configure the Series 800/850 temperature controller for use with an AD590. ç Before changing the jumper settings on the Series 800/850 TEC Controllers, remove ALL connections (including the AC power) from the rear of the instrument and remove the cover.
  • Page 32 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 27 [inp1] Using the ‰ button, cycle through until you reach in the top display, then [Out1] press the ¿ or ¯ arrows until you reach in the top display, then press ‰.
  • Page 33 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 28 LM35 This procedure shows how to configure the Series 800/850 temperature controller for use with an LM35. ç Before changing the jumper settings on the Series 800/850 TEC Controllers, remove ALL connections (including the AC power) from the rear of the instrument and remove the cover.
  • Page 34 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 29 Cycle through using ‰ to select the parameters to change in the bottom display. Change the parameters by using the ¿ or ¯ arrows. [Ot`1] [COOl] Note: If option desired is unavailable, then first change [Ot`2] to [OFF`] .
  • Page 35 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 30 LMx35 This procedure shows how to configure the Series 800/850 temperature controller for use with an LM135, 235 and 335. ç Before changing the jumper settings on the Series 800/850 TEC Controllers, remove ALL connections (including the AC power) from the rear of the instrument and remove the cover.
  • Page 36 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 31 [inp1] Using the ‰ button, cycle through until you reach in the top display, then [Out1] press the ¿ or ¯ arrows until you reach in the top display, then press ‰.
  • Page 37 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 32 100 Ohm 3 Wire RTD This procedure shows how to configure the Series 800/850 TEC Controllers for use with an 100 Ohm 3 Wire RTD. Setup the hardware for 100 Ohm 3 Wire RTD Operation: ç...
  • Page 38 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 33 parameters to change in the bottom display. Change the parameters by using the ¿ or ¯ arrows. [deC1] [``)0] You have two choices here. One decimal point or no decimal point. Change...
  • Page 39 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 34 100 Ohm 3 Wire RTD Output 3 Programming (only necessary if change required - see Appendix A for details) [`set] Pressing ¿¯ simultaneously for 6 seconds will get you to the...
  • Page 40 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 35 This page intentionally left blank...
  • Page 41 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 36 Voltage This procedure shows to configure the Series 800/850 TEC Controllers for use with a Voltage input in the range of 0 to 10V. Setup the hardware for Voltage Operation: ç...
  • Page 42 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 37 Cycle through using ‰ to select the parameters to change in the bottom display. Change the parameters by using the ¿ or ¯ arrows. [Ot`1] [COOl] Note: If option desired is unavailable, then first...
  • Page 43 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 38 Current This procedure shows how to configure the Series 800/850 TEC Controllers for use with a current input in the range of 0 to 20mA. ç Before changing the jumper settings on the Series 800/850 TEC Controllers, remove ALL connections (including the AC power) from the rear of the instrument and remove the cover.
  • Page 44 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 39 [inp1] Using the ‰ button, cycle through until you reach in the top display, then [Out1] press the ¿ or ¯ arrows until you reach in the top display, then press ‰.
  • Page 45 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 40 Thermocouples (All Types) This procedure shows how to configure the Series 800/850 TEC Controllers for use with a Thermocouple (Any Type) ç Before changing the jumper settings on the Series 800/850 TEC Controllers, remove ALL connections (including the AC power) from the rear of the instrument and remove the cover.
  • Page 46 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 41 [glbl] Cycle through using ‰ until you see again in the top display. Then press ¿ [inp1] or ¯ until you see in the top display. Cycle through using ‰ to select the parameters to change in the bottom display.
  • Page 47 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 42 Thermocouples (All Types) (continued) Output 3 Programming (only necessary if change required - see Appendix A for details) [`set] Pressing ¿¯ simultaneously for 6 seconds will get you to the...

  • Page 48: Operation And Control Of The Series 800/850 Thermoelectric Cooler Controller

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 43 Section 5.0 OPERATION AND CONTROL OF THE SERIES 800/850 TEMPERATURE CONTROLLER. If all the previous steps have been followed, at this stage, the Series 800/850 temperature controller should be properly configured for the desired sensor type and the TEC module should be connected in the correct fashion.
  • Page 49 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 44 MAIN MENU DEFAULTS The Series 800/850 TEC Controllers are shipped from the factory with a pre-programmed Main Menu (see Appendix E, Front Panel Controls for details). This menu places certain commonly used parameters in the Main Menu of the controller.
  • Page 50 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 45 CONTROL INTRODUCTION The Series 800/850 TEC Controllers have been designed to provide a great deal of flexiblity with respect to the instrument’s control parameters. Temperature control can be accomplished in one of four ways as listed below:...
  • Page 51 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 46 CONTROL METHODS BLOCK DIAGRAM Sensor Scaling [Pb`1] [It`1] [De`1] Input 1 Cool Out 1 Power Power Heat Control Switch Out 2 [Pb`2] [It`2] [De`2] Out 4 Out 3...
  • Page 52 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 47 CONTROL METHODS ON/OFF Control Cooling Action switches on when the Cooling Action switches Process Temperature rises above the on at Startup Set Point plus the Hysteresis Hysteresis...
  • Page 53 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 48 CONTROL METHODS (CONTINUED) Proportional Only (P) Control Some processes need to maintain a temperature or process value closer to the set point than an on/off control can provide.
  • Page 54 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 49 CONTROL METHODS (CONTINUED) Proportional plus Integral (PI) Control The droop caused by proportional control can be corrected by adding integral (reset) control to the system. When the system has settled down the integral (reset) value is tuned to bring the temperature or process value closer to the set point.
  • Page 55 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 50 CONTROL METHODS (CONTINUE) Proportional plus Integral plus Derivative (PID) Control Use derivative (rate) control to minimize the overshoot in a PI-controlled system. Derivative (rate) adjusts the output based on the rate of change in the temperature or process value.
  • Page 56 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 51 CONTROL METHODS (CONTINUED) Ramp to Set Point The picture shown above illustrates a typical control situation where NO ramping is involved. Below is another picture which illustrates the difference when applying a Ramp to Set Point.
  • Page 57 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 52 DETAILED PARAMETER DESCRIPTIONS Introduction The block diagram in Figure 3.1 shows the internal functions associated with the final output to the TEC. Use this diagram while learning about the parameters in the Main Menu below: Percent Current..
  • Page 58 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 53 Integral Term 2........[It`2] This is the Heating Integral Term (or “time”).
  • Page 59 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 54 11. Current Limit Set Point........[Ilsp] Use this in conjuction with [IL`a] and [IL`b].

  • Page 60: Appendix A: System Configuration

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 55 Appendix A SYSTEM CONFIGURATION The diagram below shows the basic inputs and outputs of the Series 800/850 thermoelectric cooler controller. Sensor Scaling [Pb`1] [It`1] [De`1] Input 1...
  • Page 61 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 56 SENSOR DETAILS TABLE Sensor Type Omega Mating Part # Color Temperature Ranges Front Panel Units 0 to 99.99 (default) Kohms Thermistor MTP-U-M White 0 to 999.9 Kohms -50 to +150 (default) °C...
  • Page 62 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 57 CONFIGURATION EXAMPLE Below is an example of how to use a voltage drop across a diode to measure temperature... 1N914A 0 to 10 Volts 0 to 10 Volts Offset, Gain &...
  • Page 63 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 58 This page intentionally left blank...

  • Page 64: Appendix B: Power Booster Modules

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 59 Appendix B POWER BOOSTER MODULE A Power Booster Module (PBM) is simply a power supply housed in the same form factor as the Main controller. The only difference is that the Main controller has a front panel with controls and optional I/O capabilities.
  • Page 65 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 60 This page intentionally left blank...

  • Page 66: Appendix C: Tecview Software

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 61 Appendix C TECV SOFTWARE The Series 800/850 TEC Controller can optionally be operated via the digital output option (Output 4) by means of special software. This software is called TECView and can be very helpful in setting up the controller and logging data using a personal computer.
  • Page 67 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 62 This page intentionally left blank...

  • Page 68: Appendix D: 115 Vac To 230 Vac Operation (230 Vac Users See Pg Iii)

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 thermoelectric cooler controller Page 63 Appendix D 115 VAC TO 230 VAC OPERATION The Series 800/850 TEC Controller is shipped for use with the AC voltage level specified in the customer’s purchase order. The default configuration is 115 VAC., 60 Hz.
  • Page 69 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 thermoelectric cooler controller Page 64 This page intentionally left blank...

  • Page 70: Appendix E: Front Panel Controls

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 65 Appendix E FRONT PANEL CONTROLS This chapter explains keys, displays and navigation information. Also included is a complete software map of the standard firmware. Outputs (1 to 4)
  • Page 71 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 66 The following example uses this configuration: i) Controller is set up to use a thermistor type sensor (10Kohms @ 25°C) on the 0 to 100K range ( ) by following the instruction in Section 4.0 under “Sensor...
  • Page 72 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 67 This page intentionally left blank...
  • Page 73 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 68 SOFTWARE MAP Navigation Home Page [``96] Process 1 Value [``96] Set Point Value, Remote Set Point Value, Event Set Point, ‰ or Percent Output Value ‰ and ˆ...
  • Page 74 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 69 SOFTWARE MAP (CONTINUED) [InP1] Input 1 Menu Setup Page [`SEt] [`SEt] Setup Page [CUSt] Custom Menu [SEn1] Sensor Type Factory Page ¿ ‰ [FctY] [Fcty] Factory Page ¯...
  • Page 75 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 70 NAVIGATING THE TEMPERATURE CONTROLLER Choose a page (Operation, Setup, or Factory) and press its key sequence. The page appears in the lower display. Note: The starting point is the Home Page each...

  • Page 76: Appendix F: Main Menu Programming

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 71 Appendix F MAIN MENU PROGRAMMING Main Menu Defaults The Series 800/850 Thermoelectric Cooler Controller is shipped from the factory with a preprogrammed Main Menu. This menu places certain commonly used parameters in the Main Menu of the controller.
  • Page 77 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 72 To perform an Auto Tune you would perform the following steps: Press ˆ then press ‰ eight times in a row. You should see [`aut] in the bottom display.

  • Page 78: Appendix G: Ramp And Soak

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 73 Appendix G RAMP AND SOAK Ramp and Soak Features Feature Description Multiple Profiles and up to 8 steps per Profile Two profiles can be programmed and retained in memory for later selection.
  • Page 79 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 74 PROGRAM MENU PROMPTS [eunt] Event Outputs [File] File [step} Step [Styp} Step Type [Stpt] Set Point Step Soak Step Jump Loop Step End Step (End) [soaH] [``JL]...
  • Page 80 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 75 Pre-run and Run Menus The Pre-run and Run menu prompts are only visible when in the Pre-Run or Run mode. The Pre-run mode is entered by pressing the ˆInfinity key one time while at the Home Page location.
  • Page 81 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 76 To Stop a running profile... Press the ˆInfinity key once. To Resume a halted profile... Press the ˆInfinity key once, press the ‰Advance key repeatedly until the [resU] parameter appears in the lower display, and press the ˆInfinity key.

  • Page 82: Appendix H: Thermistor Curves

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 77 Appendix H THERMISTOR CURVES On the following pages are listed the termperature curves and associated resistance tables for three common thermistor values at room temperture (25°C). The thermistor values listed are 10 Kohm, 30 Kohm, and 100 Kohm.
  • Page 83 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 78 10 KOHMS 100,000 10 Kohm @ 25°C Thermistor Curve 90,000 80,000 70,000 60,000 50,000 40,000 30,000 20,000 10,000 Temperature 1,000,000 800,000 600,000 400,000 200,000 Temperature...
  • Page 84 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 79 31,013.49 2,881.18 498.27 10kOhm 29,484.24 2,777.51 484.7 Temp. Resistance 28,039.24 2,678.1 471.56 (°C) (ohms) 26,673.4 2,582.76 458.84 25,381.96 2,491.31 446.52 670,500 24,160.46 2,403.56 434.59 624,408.64 23,004.75 2,319.36 423.03...
  • Page 85 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 80 30 KOHMS 100,000 30 Kohm @ 25°C Thermistor Curve 90,000 80,000 70,000 60,000 50,000 40,000 30,000 20,000 10,000 Temperature 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000...
  • Page 86 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 81 56,096.31 6,139.32 1,142.66 30kOhm 53,556.84 5,929.97 1,112.46 Temp. Resistance 51,145.48 5,728.74 1,083.2 (°C) (ohms) 48,855.17 5,535.29 1,054.82 46,679.23 5,349.27 1,027.31 884,600 44,611.41 5,170.37 1,000.64 830,860.13 42,645.83 4,998.29 974.77...
  • Page 87 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 82 100 KOHMS 100,000 30 Kohm @ 25°C Thermistor Curve 90,000 80,000 70,000 60,000 50,000 40,000 30,000 20,000 10,000 Temperature 1,000,000 800,000 600,000 400,000 200,000 Temperature...
  • Page 88 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 83 192,139.64 18,961.75 3,215.67 100kOhm 183,082.73 18,282.39 3,125.73 Temp. Resistance 174,498.03 17,630.46 3,038.68 (°C) (ohms) 166,358.72 17,004.73 2,954.41 158,639.62 16,404.05 2,872.84 3,356,000 151,317.09 15,827.3 2,793.85 3,145,720.96 144,368.91 15,273.43 2,717.36...
  • Page 89 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 84 This page intentionally left blank.

  • Page 90: Appendix I: General Purpose Interface Bus (Gpib)

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 85 Appendix I GENERAL PURPOSE INTERFACE BUS (GPIB) GPIB control of the Series 850 TEC Controller is accomplished through a GPIB to Modbus converter. This converter takes two simple GPIB commands and allows complete control over the Series 850 TEC Controller through the use of the MODBUS protocol using RS485.
  • Page 91 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 86 MODBUS COMMAND SYNTAX These are the two commands used to read and write to the Series 850 TEC Conttroller via GPIB. Syntax Meaning Read Register Command. Reads one or multiple Modbus device registers. User R[?] reg, num specifies starting register reg and number of registers to be read num.
  • Page 92 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 87 EXAMPLE COMMANDS Below are the MODBUS registers for common settings. The complete list of registers are located in Appendix K. Name Description Register(s) Process Actual temperature READ ONLY. -1999 to 9999 limited to input range. (i.e.
  • Page 93 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 88 MODBUS COMMANDS OVER GPIB Syntax Default Meaning Modbus Address Command. This must match the setting programmed C addr at the front panel of the controller. Default=1. Loopback Command.
  • Page 94 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 89 Notes: To enter HEX values, the value must be preceded with a #h (i.e. 100 decimal = #h64). The device address and a read command can be concatenated on one line if separated with a colon.
  • Page 95 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 90 CHANGING THE GPIB ADDRESS Default address of 04. Configuring the controller for a new address: 1. Connect the Series 850 TEC Controller to the GPIB bus controller. Note: disconnect other equipment that may conflict with the existing address! 2.
  • Page 96 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 91 IEEE 488.2 COMMANDS COMMAND NAME DESCRIPTION *CLS Clear Status *ESE<value> Event Status Enable <value> integer 0 to 255. *ESE? Event Status Enable Query Returns state (integer 0 to 255) of the ESE register.
  • Page 97 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 92 SCPI COMMANDS Standard SCPI Commands Command (Capitals are shortcuts) Function Option(s) Factory Setting SYSTem:COMMunicate:GPIB:ADDRess Sets GPIB bus address 0 to 30 Sets transmit/receive baud rate 300 to 19200...

  • Page 98: Appendix J: Technical Information

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 93 Appendix J TECHINICAL INFORMATION This section contains a reference to information that may be useful in certain configurations. Please examine the list below to determine your individual need.
  • Page 99 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 94 TEMPERATURE SENSOR CONFIGURATIONS The Series 800/850 TEC Controllers were designed to allow the user to select from a wide range of temperature sensors. Should it become necessary to change the sensor interface to a different input other than the one that was shipped from the factory, then follow the steps below.
  • Page 100 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 95 TEMPERATURE SENSOR CONFIGURATIONS Thermocouple Configuration The drawing below shows the thermocouple configuration for the Series 800/850 TEC Controllers. In this configuration only the thermocouple Type specified at time of order can be used.
  • Page 101 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 96 INPUTS Event/Remote Analog Set point (Input 2) The Series 800/850 TEC Controllers provide a great deal of flexibility for the customer by allowing the customer to control it via Optional Input 2. Along with the Sensor Input, the Series 800/850 TEC Controllers can be equipped with an additional input (Input 2), which can perform a variety of functions.
  • Page 102 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 97 OUTPUTS The Series 800/850 TEC Controllers are equipped with Output 3 which is an internally wired option giving the user a configurable high and/or low Temperature Limit Alarm. Output 3 also adds a “Soft Start” to the controller which eliminates any potentially harmful spikes of current during power up.
  • Page 103 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 98 ANALOG RETRANSMIT OR DIGITAL COMMUNICATIONS (OUTPUT 4) Output 4 can be ordered as either an analog output (Analog Retransmit) or a digital output (EIA/RS-232 or EIA/RS-485). The two options are described below in more detail.
  • Page 104 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 99 WIRING THE OPTIONAL COMMUNICATIONS PORT Series 800/850 TEC Controllers Connect the to a terminal or computer as follows Straight Cable Rear View of the Series 800/850 Female DB-9...
  • Page 105 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 100 SPECIAL CONFIGURATIONS The Series 800/850 TEC Controllers offer great user flexibility. The following sections describe how to set up special configurations that provide even more control over the output of the Series 800/850 TEC Controllers.

  • Page 106: Appendix K: Modbus Remote Terminal Unit (Rtu)

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 101 Appendix K MODBUS Modbus is the protocol used over the serial communications channel if installed. Using the Modbus interface requires that the controller be equipped with either EIA/RS-232 or EIA/RS-485.
  • Page 107 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 102 Writing a Modbus Application You need to code messages in eight-bit bytes, with no parity bit, one stop bit (8, n, 1). Negative parameter values must be written in twos complement format. Decimal places are assumed and are not sent or received in modbus packets.
  • Page 108 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 103 If it is necessary to write to the non-volatile memory excessively, please disable the nonvolatile bit. The register is at relative address 24. It can be toggled back and forth which allows the program to save the current state of the parameters into the EEPROM at will.
  • Page 109 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 104 Read Multiple Registers Command (0x03 or 0x04) This command returns from 1 to 32 registers. nn nn 00 nn nn nn Packet sent to controller: controller address (one byte)
  • Page 110 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 105 Write to a Single Register Command (0x06) This command writes a parameter to a single register. The controller will echo back the command. An attempt to write to a read-only parameter returns an illegal data address error (0x02).
  • Page 111 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 106 Write to Multiple Registers Command (0x10) This command actually writes a parameter to only a single register. An attempt to write to a read-only parameter returns an illegal data address error (0x02).
  • Page 112 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 107 Loop Back Command (0x08) This command simply echoes the message. This serves as a quick way to check your wiring. nn nn nn nn Packet sent to controller:...
  • Page 113 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 108 Exception Responses When a controller cannot process a command it returns an exception response and sets the high bit (0x80) of the command. 0x01 illegal command 0x02 illegal data address...
  • Page 114 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 109 CYCLICAL REDUNDANCY CHECKSUM (CRC) ALGORITHM This C routine, calc_crc(), calculates the cyclical redundancy checksum, CRC, for a string of characters. The CRC is the result of dividing the string by 0xA001.
  • Page 115 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 110 MODBUS REGISTERS Relative Address Parameters Relative Address Parameters Model Number Decimal 1 Serial Number 1 Input Error Latching Serial Number 2 Input 2 Software ID Number Range Low 2...
  • Page 116 ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 111 SERIES 96 RAMPING MODBUS REGISTER NUMBERS Registers (Write Only) Current Profile Registers (Read Only) Relative Parameter Relative Parameter 1209 Resume Profile 5000 File 1210 Hold Profile 5001...

  • Page 117: Appendix L: Trouble Shooting

    ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual Series 800/850 Thermoelectric Cooler Controller Page 112 Appendix L TROUBLESHOOTING Condition information Possible Solution(s) [Il`A] [IL`B] No output Several parameters Check that are not set to 0.0. control whether or not [a3lo] Check that Alarm 3 is not turned off. Also...

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