TC01 Controller
The TC01 temperature controller is a microprocessor based, PID controller currently used in Sun's EC0X model temperature chambers. The TC01 controller has also been electrically and mechanically designed to be incorporated into temperature chambers manufactured by Delta Design, Inc. and Tenney Engineering Inc. or may also be easily installed into other temperature chambers and custom systems. The TC01 offers features and flexibility unmatched with analog controllers and was designed to be incorporated into modern computer systems or to stand alone as an intelligent local controller. In the local mode the 16 key keyboard allows the operator to:
Local Mode TC01 Functions
- Set and read any of 10 SCAN temperatures
- Set and read any of 10 SCAN times
- Set number of cycles for SCAN mode
- Read remaining time-at-temperature
- Read chamber temperature
- Start SCAN mode
- Start single temperature/time mode
- Reset controller
In addition, the temperature controller gives an audio and visual indication when time-at-temperature expires.
The remote mode of the TC01 allows all functions mentioned above to be executable via the IEEE-488 (GPIB) or RS232 bus. Audio and visual indications of time- at-temperature expiration is accompanied by an "interrupt" on the IEEE-488 bus and RS232 port. Local control can be enabled or disabled via IEEE-488 and/or RS232 commands. Two auxiliary outputs (TTL) are controlled by IEEE-488/RS232 to provide on/off control of external events (e.g.compressor). Local control can be enabled or disabled via IEEE-488/RS232.
Installation of the TC01 into custom systems is easily accomplished via an 8 position terminal strip. Heat and cool outputs are switched by triacs which in turn are controlled by the TC01 logic. See sample wiring diagram below.
TC01 Programming Examples
Single Set Point Example
Soak at 85C for 30 min:85 TEMP (Enter 85C set point)
30 TIME (Soak at 85C for 30 min.)
Multiple Set Point Example
Execute 10 cycles from -50C to 85C and soak for 30 min. at each temperature: -50 SCAN TEMP 0 (-50C set point)
85 SCAN TEMP 1 (85C set point)
30 SCAN TIME 0 (soak at -50C for 30 min.)
30 SCAN TIME 1 (soak at 85C for 30 min.)
10 SCAN TIME - (execute 10 cycles)
SCAN TEMP SCAN TIME (start program)
TC01 Specs (pdf)
TEMPERATURE
Set Temp. Range: -199ºC to +314ºC
Number of Scan Set Points: 10
Absolute Error Over Temp. Range: ± 1ºC
Temp. Control: ± .2ºC
Chamber Temp. Meast. Resolution: .1ºC
Temp. Display Res.: .1ºC less < 200ºC, 1ºC > 200ºC
Long Term Stability: ± .25ºC
Repeatablilty: ± .1ºC
Temp. Control Technique: PID
algorithm - PWM @ .5 Hz
TIME
Set Time-at Temperature Range 1-1800 minutes or continuous
Number of Scan Set Times: 10
Time-at-Temperature Resolution: .1 minute
CONTROL
Local Via 16 key keyboard, with red LED Time out, remote
indicators and audible tone
Remote: RS232-C 9600 Baud,
IEEE-488 Bus
Interrupts: IEEE-488 SRQ INT
RS232 Interrupt ASCII "I"
Automatic Cycling of Programmed SCAN Time/Temp. Seq. 1-1800
cycles or continuous.
ELECTRICAL/MECHANICAL
Size: 23cm H x 12cm W x 11.5cm D (9" H x 4.75" W x 4.5" D)
Power: 2watts, 110/220 volts (jumper select) 50/60HZ
Cooling Sol. Control: 1 amp, 240 VAC @ zero cross
Heater Control: 15 amp, 240 VAC @ zero cross