Athena 6000/6200 Microprocessor-based Temperature Controller Designed for the user software linearized and stabilized thermocouple input with 3-mode PID action heat/cooling control and dual alarms, ºF to ºC conversion, alarms that can be energized for temp rise/fall and selectable as process or deviation type, and a program restart circuit that eliminates program lock-up due to transient voltage spikes or line voltage “brown out.
Specifications Inputs: Line Voltage Sensor Power consumption: Ranges available: Accuracy: Temperature stability: Cold end tracking: Operating ambient for rated accuracy: Maximum lead resistance for rated accuracy: Series mode noise rejection: Common mode noise rejection: T/C break protection: Dual display: Display update rate and filtering ºF/ºC: Alarm 1 & 2: Outputs: - B Relay (time proportioning) -F Current proportional -S Pulsed voltage -T Triac (time proportional -E1 & E2 Auxiliary alarm relays (on/off
Front Panel Adjustments Touch Key Index: Allows the following adjustments to be selected.
Output Modules times less than ten seconds will drastically shorten relay life and in no case should the cycle time be set to zero (60 millisecond time base). Normally open contacts are provided for both heating or cooling use. NOTE: Do not use this output module with mechanical contactors because they generate an excessive EMI field which can lnterfere with other controllers. Instead we recommend "T" output modules for this applicatlon.
Installation Instructions variable, the probe should be close to the work area. Some experimenting with probe location is often needed to find its optimum position. In a bath process, the addition of a stirrer will help to eliminate thermal lags. Since the thermocouple is basically a point measuring device, putting more than one thermocouple in parallel will provide an average temperature reading and produce better results In air heated processes.
Operating Instructions Start-Up Before line voltage is applied, double check all items connected to controller: The correct type thermocouple (see section on thermocouples, p. 11) must be on terminals 1 and 2 (red on 2) with no AC or DC voltage leading or arcing to it. Proper terminals selected for line voltage (8 & 10 for 240V). No heater shorts or shorts to ground. No exposed bare wires or frayed insulation.
Operating Instructions relays directly connected to small heaters, 0-5 sec., but not faster than 10 sec. when driving mechanical contactors. “S” solid state contactor drivers can be used 0-10 sec. “F” mA output units must be set to HC = 0, less than 1 sec. CG Is cooling gain. If no cooling is used, set it to 100, and enter. If cooling is employed, start at CG = 400 and follow procedure to set HG. The final index position is used to set cooling cycling (CC) time. On all "T" output units, C = 0.
Operating Instructions (with some overshoot) reduce rate time 10-20%. For more anticipation (giving undershoot) increase rate slightly. Experiment with (HG) settings. EXAMPLES OF PARAMETER SETTING ON TWO PROCESSES Process A : Slow, 2 lag process, matched power, 200º set point. HG RT TEMPERATURE REMARKS 409 00 197º-199º 200 00 196º 200 05 194º-206º 200 200 10 20 199º-201º 200º 200 40 198º-202º Process shows 2º oscillation, 2º average droop cut gain setting in half.
Trouble Shooting Unit Repairs Front dark - no instrument power, blown fuse or burned out transformer. Process display shows CCCC - Open thermocouple. Short terminals 1 and 2, should indicate temperature at back of case. Repair or replace thermocouple. About Half Or Twice Expected Reading- Check position of ºC or ºF switch. Short 1 and 2 to read room temperature. 22-30 is %, 70-85 is ºF About 30% Error - Wrong thermocouple type. Disconnect couple. “J” units over range above 1400°F, “K” above 2000°F + .
