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7
10.
Set “Zone 1 Trip 1: Set Hysteresis:” to “5”, then press Enter.
11.
Set “Zone 1 Trip 2:” to 90º F, then press Enter.
12.
Set “Zone 1 Trip 2: Trip Over or Under” to “Over”, then press Enter.
13.
Set “Zone 1 Trip 2: Sound Alarm on trip” to “No”, then press Enter.
14.
Set “Zone 1 Trip 2: Outputs to trip:” to “Output1:Y” and the other outputs leave as
N, then press Enter.
15.
Set “Zone 1 Trip 2: Untrip Outputs by” to “Using Hysteresis”, then press Enter.
16.
Set “Zone 1 Trip 2: Set Hysteresis:” to “5”, then press Enter.
17.
The display will read “Zone 2 Choose Input Type: No Input Connected”. Press &
hold Enter until CX224 re-initializes.
18.
The current temp reading will now be displayed on the controller for Zone 1.
19.
Heat the sensor until the alarm trips.
20.
Continue to heat the sensor further until Output 1 trips at 90º F. The alarm and
output should both be tripped now.
21.
Press Enter to clear the alarm.
22.
Allow the sensor to cool so that Output 1 will untrip. Output 1 will turn off at 85º F
and Alarm will turn off at 80º F, due to the hysteresis settings of 5.
You have now configured Zone 1 Trip 1 on an over temp condition using hysteresis to
untrip and Zone 1 Trip 2 on an over temp condition using hysteresis to untrip. This
type of configuration is common when doing over temp protection. The alarm gives
warning to operator and higher trip will shutdown equipment before serious damage
results.
Example 4: Under Temp Operation with Alarm and Output Tripping Separately
1.
Press and hold any one of the keys on the front panel until the main menu is
displayed.
2.
Continue to set the settings from “Reverse Acting Outputs” to “Zone 1 Choose
Input Type” as appropriate.
3.
Set “Zone 1 Trip 1:” to 70º F, then press Enter.
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