Specifications

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If less than the full output capacity of the cooling system is needed, the
controller will provide pulses of power to the unit to limit the output. The
cooling system will be turned on and off cyclically to obtain an average output
lower than the full capacity of the cooling system, appropriate to maintain the
desired set-point in the enclosure.
For best results, the Cycle Time 2 (CyC.2) for the Model 563 Gas Cooling
System should be set as short as possible.
The ETS Model 563 minimum cycle time is 1.0 seconds (3.0
recommended).
5.3 Programming the Microprocessor Controller
5.3.1 Accessing the Programming Menu
1. To access the Controller Program Menu, press the “t” and “u” buttons
simultaneously for three (3) seconds. The controller will enter the Menu on
Level 1 in the “tunE” function. (If using the CalComm Computer Program,
refer to the “CALCOMM” section of the Manual).
2. To scroll to different parameters within a Level, press the “t” button to scroll
right and the “u” button to scroll left.
3. To change a parameter or change Levels, press and hold the “∗” button.
Press the “t” or “u” buttons to change the parameter.
4. All factory-programmed values listed here are optimized for use with the ETS
Model 563 Liquid Carbon Dioxide Cooling System and the ETS Model 564
500-Watt Heating System. Other systems may require different settings.
If the Model 518 Chamber has different systems, the information programmed
into the controllers will be different. Information on the specific program is
provided separately, if not, contact ETS.
5. To exit the menu press and hold “tu” for three seconds.
5.3.2 LEVL C (Level C)
Level C is only visible when the controller is fitted with the COMMS option (RS
485 computer interface card). Level C is responsible for the communication
protocol for the unit when interfacing with a PC. The values in Level C must
match the values on the computer screen to establish communication.