TE Technology TC-720 - Manual (Page 52)

PROPORTIONAL + DEADBAND MODE CONFIGURATION
This feature is typically used with air-to-air cooling assemblies (TE Technology AC-XXX models) when controlling the internal
temperature of an enclosure. This feature is particularly useful to minimize power usage for applications that have a
relatively wide portion of their operating temperature range in which heating or cooling is not required. The controller
would only apply power if the sensor temperature were at the extremes of the operating temperature range.
Clicking on the “CONFIGURE PROPORTIONAL+DEADBAND MODE” OK button calls up the following screen:
The controller can be configured so that power is applied proportionally based on four different temperatures. The
controller provides no power output when the sensor temperature is between the two temperatures defined by START
HEAT and START COOL. If the sensor temperature were to drop below the START HEAT temperature, the controller would
then begin proportionally increasing power in the heating mode such that 100% would be applied if the sensor temperature
were to decrease to (or go below) the FULL HEAT temperature. Likewise, if the sensor temperature were instead to start
increasing past the START COOL temperature, then the controller would begin proportionally increasing power in the
cooling mode from such that -100% would then be applied if the sensor temperature were to increase to (or exceed) the
FULL COOL temperature.
In order for this feature to work properly, be sure that the FULL HEAT temperature is less than the START
HEAT temperature. Similarly, be sure that the FULL COOL temperature is greater than the START COOL
temperature.
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