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6
22.
Press Enter to silence the alarm. (Note: With configuration set above alarm will
continue turning on every minute until temp is above trip point and hysteresis
band).
23.
The contacts or logic output will now be in its normal state, due to the output
configured for reverse acting.
24.
Allow sensor to heat up so that Output 1 will untrip. Output 1 will turn off at 70º F,
due to the hysteresis setting of 5º.
25.
The contacts or logic output will now be in its energized state or high state, due to
Output 1 set for reverse acting. Setting the output for reverse acting can be a
good way to protect equipment in case of power interrupts to the CX224.
You have now configured Zone 1 to trip on an under temp condition using hysteresis
to untrip. This means the controller will trip the outputs when the sensor reads a value
of 65º F or lower and will not untrip until above 70º F. To enter programming the
password must be entered. This shows how the password protection can prevent
unauthorized users from changing the settings.
Example 3: Over Temp Operation with Alarm and Output Tripping Separately
1.
Enter Configuration menu. The password 1111 will be used to gain entry. Choose
1. “Change Password” and press Enter. Select “Program Password” and enter 0000,
the press Enter. This will disable the password protection for entering the
“Configuration Menu”.
2.
Set all outputs to “N” for “Reverse Acting Outputs”.
3.
Continue to set the settings from “Temperature Scale” to “Zone 1 Choose Input
Type” as appropriate.
4.
The following settings below will be use to set Trip1 for an alarm at 85º F and set
Trip 2 for an Output trip at 90º F.
5.
Set “Zone 1 Trip 1:” to 85º F, then press Enter.
6.
Set “Zone 1 Trip 1: Trip Over or Under” to “Over”, then press Enter.
7.
Set “Zone 1 Trip 1: Sound Alarm on trip” to “Yes”, then press Enter.
8.
Set “Zone 1 Trip 1: Outputs to trip:” Set all outputs to “N”.
9.
Set “Zone 1 Trip 1: Untrip Outputs by” to “Using Hysteresis”, then press Enter.
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