TE Technology TC-24-25, Руководство по эксплуатации

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controller will maintain the alarm condition until it is manually cleared. When ALARM LATCH
ON is selected, and if an alarm condition exists, the alarm latch can be reset by clicking the SEND
LATCH CLEAR button.
2.11 The SENSOR TYPE menu key allows for the selection of different types of temperature sensors for
two different control ranges. Select the TS-67 sensor type when using the standard MP-2379 sensor
or other sensors listed in Appendix D
“Thermistor Styles for TC-24-25 RS232.” This will provide a
control range of -20 °C to +100 °C. However, remember that depending on the type of cooler you
have, it might not be suitable for operation at temperatures greater than 70 °C. The TS-141 sensor
type is selected when you need a -40 to +70 °C control range. This sensor type is non-standard but
can be provided. Consult with TE Technology if you need this control range.
2.12 The CHOOSE SENSOR FOR ALARM menu key allows for the selection of either the CONTROL
SENSOR the thermistor or INPUT 2 SENSOR thermistor be used for the alarm. (Note: The
INPUT 2 SENSOR thermistor cannot be used if you are using a potentiometer or voltage/current
levels to control the set point.) The INPUT 2 SENSOR thermistor can be attached to the heat sink
in order to detect over-temperature conditions.
2.13 The CHOOSE DEG C OR DEG F menu key permits the selection of displaying °F or °C.
2.14 The EEPROM WRITE ENABLE, located just below the CONFIGURE SECTION, can be checked
or unchecked depending on your requirements. See Appendix C, command #31 for more
information on EEPROM WRITE ENABLE.
2.15 Review all of your controller configuration selections. If all the configuration selections are correct
for your application, select the Send Box Values button to download these settings to the controller.
3.0 Tuning
3.1 You are now ready to tune the controller. All selections for this portion will occur in the TUNING
section of the controller software. The various constants required by the controller to optimize the
system performance are entered in this section.
3.2 The FIXED SET TEMP is the set temperature value entered in degrees. This temperature must be
within the range of the selected input sensor or the limits of low and high set ranges from the
controller configuration setup. Also, verify that the cooler is capable of safely operating at the
entered set temperature. This is particularly important if you are heating. While you can control to
+100 °C using the standard thermistor, many coolers are rated for at most 80 °C.
If you selected COMPUTER CONTROL in the CONTROL TYPE menu key under the
CONFIGURE section, the values that can be entered in the FIXED SET TEMP box range from
–12.0 to +12.0. This corresponds linearly to a fixed percentage of power output where –12.0 equals
–100% power and +12.0 100% power.