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4.
Set “Zone 1 Trip 1: Trip Over or Under” to “Under”, then press Enter.
5.
Set “Zone 1 Trip 1: Sound Alarm on trip” to “Yes”, then press Enter.
6.
Set “Zone 1 Trip 1: Outputs to trip:” Set all outputs to “N”.
7.
Set “Zone 1 Trip 1: Untrip Outputs by” to “Using Hysteresis”, then press Enter.
8.
Set “Zone 1 Trip 1: Set Hysteresis:” to “5”, then press Enter.
9.
Set “Zone 1 Trip 2:” to 60º F, then press Enter.
10.
Set “Zone 1 Trip 2: Trip Over or Under” to “Under”, then press Enter.
11.
Set “Zone 1 Trip 2: Sound Alarm on trip” to “No”, then press Enter.
12.
Set “Zone 1 Trip 2: Outputs to trip:” to “Output1:Y” and the other outputs leave as
N, then press Enter.
13.
Set “Zone 1 Trip 2: Untrip Outputs by” to “Using Hysteresis”, then press Enter.
14.
Set “Zone 1 Trip 2: Set Hysteresis:” to “5”, then press Enter.
15.
The display will read “Zone 2 Choose Input Type: No Input Connected”. Press &
hold Enter until CX224 re-initializes.
16.
The current temp reading will now be displayed on the controller for Zone 1.
17.
Cool the sensor until the alarm trips. (Put sensor in a freezer or place sensor in a
bag and place in cold water.)
18.
Continue to cool the sensor further until Output 1 trips at 60º F. The alarm and
output should both be tripped now.
19.
Press Enter to clear the alarm.
20.
Allow the sensor to warm up so that Output 1 will untrip. Output 1 will turn off at
65º F and Alarm will turn off at 75º F, due to the hysteresis setting of 5.
You have now configured Zone 1 Trip 1 on an under temp condition using hysteresis
to untrip and Zone 1 Trip 2 on an under temp condition using hysteresis to untrip.
This type of configuration is common when doing under temperature protection.
Alarm gives warning to operator and cooler temperature will shutdown equipment
before serious damage results.
Example 5: Over Temp Operation with Pressing Enter
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