SERIES 6075 TEMPERATURE CONTROLLERS WITH AUTO-TUNING PID AND PLUG-IN COMPUTER INTERFACE
Warranty Limitations Other than those expressly stated herein,THERE ARE NO OTHER WARRANTIES OF ANY KIND, EXPRESS OR lMPLlED, AND SPECIFICALLY EXCLUDED BUT NOT BY WAY OF LlMlTATlON, ARE THE IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY.
SERIES 6075 AUTO-TUNING PID TEMPERATURE CONTROLLER PAGE CONTENTS SECTION 1 GENERAL INTRODUCTION . . . . . . . . . 1 1.1 General Description and Cautions . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.3 Model Number Identification . . . . . . . . . . . . . . . . . . . . . . . . . 4 SECTION 2 INSTALLATION INSTRUCTIONS 2.1 Unpacking. . . . 2.2 Locating. . . . . 2.3 Mounting. . . . 2.4 Removing Unit. . 2.
SECTION 6 COMMUNICATIONS . . . . . . . . . . . 26 6.1 Communications Modules . . . . . . . . . . . . . . . . . . . . . . . 26 6.1.1 RS485. . . . . . . . . . . . . . . . . . . . . . . . . 26 6.1.2 RS232C. . . . . . . . . . . . . . . . . . . . . . . . . 26 6.1.3 20 mA Current Loop. . . . . . . . . . . . . . . . . . . 27 6.2 Installing the Communications Modules. . . . . . . . . . . . . 28 6.3 Interface Examples. . . . . . . . . . . . . . . . . . . . . . 30 6.3.1 Read Data. . . . . . . . . . . . . . . . . . .
GENERAL INTRODUCTION SECTION 1 1.1 General Description and Cautions Athena Controls, Inc. is proud of the Series 6075 which you will now use It has been manufactured to our exactingproduction standards, and packed for maximum protection in shipment You will get years of reliable service from the unit if the information in the manual is followed regarding location, adjustments, and general operation. CAUTlON High Voltage and High Temperature can cause injury and are a Fire Hazard.
SECTION 2 INSTALLATION INSTRUCTIONS 2.1 2.2 Unpacking Unpack the instrument and inspect for shipping damage. Report any damage to the carrier immediitely. Locating Select a location for the controller where it will not be subject to excessive shock vibration, dirt moisture or oil. The ambient temperature of the area should be between 3 2 º and 131 º F (A model DC-15 dust, oil and water resistant cover is available to protect from harsh environments.) 2.
SECTION 3 OUTPUT MODULES 3.1 Module Description The Athena 6075 offers field interchangeable output modules. This unique feature makes it possible to fill output requirements for a variety of applications with a single controller model. Module Type B: This 7A/5A relay (at 120/240 Vac) is used for driving resistive heaters.
Standard Thermocouples I.SA. Type J K T R S Materials Color Code Iron-Constantant (I/C) White( + ) Red( - ) Chromel-Alumel Yellow( + ) Red( - ) Copper-Constanan Blue( + ) Red( - ) Platinum-Platinum 13%Rhodium Platinum-Platinum 10% Rhodium - Wiring RTD Circuits 6275 units are designed for 100 Ohm Platinum RTD’s 2-wire RTD’s are connected to terminals 1and 2 with a jumper connecting 2 to 3. Keep leads short and useheavygauge copper extension wires if necessary, to minimize lead resistance.
watchdog circuits and filtering built into the unit Contacts and coils must be suppressed! One very effective filter is a .1 ufd/600V capacitor in series with a 100 Ohm, 1/2 watt (min.) resistor. This network must be put on all contacts, especially across hard contacts that are switching coils and across the coils themselves. The filter should be placed as close to the noise source as Possible i.e. right on a contactors coil etc.
SECTION 5 OPERATION 5.1 Front Panel Features Touch Key and Indication Operation Layout 1. Process Temperature or Parameter code is viewed on the upper display. 2. Set Point or Parameter setting is viewed on the lower display. Degrees F and C is also displayed. 3. Set Point Key: Allows user to return to set point 4. ENTER/TUNE Key: Enters a selected value into nonvolatile memory. Also initiates Auto-Tuning when used in the correct sequence. 5. Up and Down Keys: Raises and lowers setting respectively.
5.2 Basic Series 6075 Setup 1. The 6075 has dual-input ranges which allow selection of one of two ranges and T/C types, by simply moving the position of the internal jumper. To set unit to proper range, remove unit from case and position jumper on top board. Front position is range A, rear position is range B, grouped s offered. A = 01F B = 02F No Jumper = 26F A = 33F A = 22F B = 32F B = 26C No Jumper = 22C Consult Serial Tag for actual range and sensor type ordered. Ranges are defined in Section 1.
2. R . ange of Adjustments (Parameters) All parameters are accessed by pressing the INDEX key. They are listed in the order they are displayed when the lNDEX key is pressed. The front panel of the Model 6075 contains a lower display of 5 digits which displays the set point temperature, the other parameter values and degrees F or C. The upper display consists of 4 digits which display the process value or the parameter abbreviations; e.g. -A1- identifies Alarm 1.
Locally Adjustable only (Not by Remote Keyboard) 0=Low, 1 =normal, 10 Auto-Tune Damping -At2=High 11 -cFConfiguration 0 to15 (See Note 4) 0-Oil or none, Cooling Type 12xx -ct1 -Air, 2-Water Unit ID CODE 0 to 99 13 -Id(See Note 5) 14 Baud Rates -bd300(0),600(1) 1200(2), 2400(3) 15 -cLCalibration, Low ±3% Span (ZERO) (°F/ºC) Calibration, High 16 ±3% Span -cH(SPAN) (ºF/ºC) xx Not on RTD units 3. 4. 5.
pressed the INDEX key, the unit will advance to the High and Low Calibration positions. but index no further until the SETPOINT key is depressed. CAUTION: DO NOT CHANGE THE CALIBRATION LOW [cL(Zero)] O R CALlBRATlON H I G H [cH(Span)] A D J U S T M E N T UNLESS YOU INTEND TO, ARE QUALIFIED AND HAVE A CALIBRATION TEST SETUP CONNECTED. 9. Press Index and Alarm One (Al) appears in the upper display area. If this option is installed. set in the desired temperature value, then press ENTER. 10.
SPECIAL NOTE: For Units utilizing only heating output, the cooling gain should be set by the user to the equivalent heat gain. The inverse is also true. Setting CG to 0 initiates an on-off (narrow deadband) output for cooling, which is recommended for cooling-only applications. Setting HG to 0 disables the Heat output. NOTE 3: The access code is a number stored in ROM that upon entering in location -cd- allows user access to change parameters.
5.3 Tuning the Controller 5.3.1 Introduction The Series 6075 is a state-of-the-art automatic tuning PlD temperature controller. The user has the option of automatically selecting the controller’s PlD settings or manually setting the unit as desired. Tuning a 3-Mode controller involves three (3) major adjustments; proportional Band (Gain), Rate (Derivative) and Reset (lntegral) action.
01 Normal Damping - For processes that: (any combination of the following) - have heaters that are properly sized. - have good coupling between heater and probe. - are considered standard with moderate lags and response time.
STEP 6: When ready to start Auto-Tuning calculation of PlD settings press the “Enter/Tune” button. The displays will return to process and set point displayed. The F/C digit will blink while tuning is in process. Upon completion of tuning, the digit will stop blinking. TO stop the Auto-Tuning press standby/cancel. NOTE: Series 6275, RTD input will not Auto-Tune when the decimal point range is used.
4. Press STAND-BY again and temperature will begin to rise. When the process rises to the desired set point it will probably oscillate. Periodically decrease the Gain (lower the HG number) until a small constant oscillation is obtained. Reducing the Gain by steps of one half (1/2) the previous -HG- setting is an acceptable method to obtain the desired small oscillation. Note time between oscillations in seconds (“T” on Figure 5.3). 5. Decrease the Heat Gain to 60% of the value obtained in the previous step.
SECTION 6 COMMUNICATIONS 6.1 Communications Modules Optional plug-in modules are available for the Series 6075 to allow interfacing to the most common industry standards. A brief description of each type follows. 6.1.1 RS485 RS485 is a specification standard for balanced voltage digitial interface circuits published by the EIA. It was published in 1983 as an upgrade of RS422A electrical specifications, with emphasis given to the application of multipoint systems.
Standard and the 232 is the identification number for that particular Standard. The C designates the last revision made to the RS232 standard. The purpose of this standard is to define the electrical characteristics for the interfacing of ”data terminal equipment” and “data communications equip ment”. The standard providesvoltage ranges for data and control signals to provide proper transmission. This module allows bi-directional data transfer via a three conductor cable consisting of signal ground (pin 7).
SECTION 7 CALIBRATION WARNING: These adjustments are factory set and should only be changed by a qualified person using calibrated equipment. Adjustment is not necessary during the life of these controllers. 7.1 Zero (-cL-) and Span (cH) Calibration 1. Unlock access to the calibration constants by entering the unlock number (14) into location 9 (-cd-). 2. Use a tempemture calibmtor with a range appropriate for the unit to be calibrated. Set in the value for low scale calibration, e.g. (1 % of range). 3. 4.
SECTION 8 TROUBLESHOOTING 8.1 Troubleshooting - General Symptom Probable Cause & Corrective Action Display does not light up. No power, blown fuse. Process display shows (- - -) Open thermocouple circuit Shorting terminals 1 or ‘HHHH’ and 2 should indicate temperature at back of case. Repair or replace thermocouple. Process display shows LLLL or Check for reversed thermocouple. counts down scale when temperature is rising. About 30% error.
ATHENL Athena Controls, Inc.
