User Manual

- ““AL“ corresponds to the Alarm-Function, that is if the temperature is beyond the Alarm Range, the signal
output will be switched on
- “Go“ corresponds to the Good-Function, that is if the temperature is within the Tolerance-Range, the sig-
nal output will be switched on
3.6.7 Parameter
The Parameter adjustment shows an identification letter in the first digit: (in the example a “P” for the propor-
tional rate KP:
Meaning of the identification letter:
P: Control Parameter KP
I: Control Parameter KI
d: Control Parameter KD
The maximum value is here 63
L: Control Parameter IL (Integration limit), maximum value 999
C: PWM-Limit (C = “C”utoff), maximum value 0..127, in case of exceeding the value the display returns to
Zero and it must be reset. PWM-Limit Zero switches off in fact the power output .
3.6.8 Temperatur Offset Setting
The first digit shows the identification letter „o“:
After pressing the button “Input” the actual process temperature is displayed. For the correction the desired
process value must be programmed. This value can be determined, for instance, with a reference measure in-
strument, or you can use an ice bath as a reference.
So the tolerance of the sensor element or of the measuring configuration can be compensated.
There is no possibility by means of the buttons to reset the factory adjustments. Only with the aid of the confi-
guration program you can set the correction value to Zero.
3.6.9 Temperatur Setpoint Ramp Function
The first digit shows the identification letter „r“:
CoolTronic GmbH Operation Manual Peltier Controller TC2812 Page 10 / 16
Revision: 1.15, Date: 30. Januar 2008 20080130_TC2812_MAN_E