Chromalox CX224 Manual
Tel: 615-793-3900 • Fax: 615-793-3563 • www.chromalox.com
CX224 Setup Tutorial
Table of Contents
1. Introduction
2. Configuring Controller for Operation
A. Example 1 – Over Temp Operation with Hysteresis @ 5º F.
B. Example 2 – Under Temp Operation with Hysteresis @ 5º F.
C. Example 3 – Over Temp Operation with Alarm and Output Tripping
Separately
D. Example 4 – Under Temp Operation with Alarm and Output Tripping
Separately
E. Example 5 – Over Temp Operation with Pressing Enter
F. Example 6 – Over Temp Operation with Manual Reset
E. Example 7 – Over Temp Operation with Offset
F. Example 8 – How to Rename Zones
G. Example 9 – How to Exercise Relays
H. Example 10 – How to Freeze Outputs
3. Definition of Terms / Use for Operation
A. Menu
B. Program
http://www.chromalox.com
Chromalox Tel: 615-793-3900 • Fax: 615-793-3563 • www.chromalox.com 2
1. Introduction
This setup tutorial will step through some of the main ways that the CX224 can be
used. After completion, the user will have a good understanding of the features and
how to use them. Each section will build off of the one before it.S
Buttons Scrolling through Zones Main Menu Sub Menu
Back Returns to
monitor zones
Returns to
previous step
Forward Up
Changes
current value
in step
Back Down
Scrolls through
current step
Forward
Enters into
selected menu
option
Goes to next
step
Table 1 Quick Reference Guide
Note: Holding down any button for 3 seconds and you will be put into the main
menu.
2. Configuring Controller for Operation
Example 1: Over Temp Operation with Hysteresis @ 5º F
1. Begin by placing the CX224 on a desk or table.
2. Connect one senor to the unit, note which type of sensor you have connected.
3. Apply power to the CX224. The display should light and the message “Initializing
Inputs” will be displayed. A few seconds later the unit will display “Zone 1 Off”.
4. Press and hold any one of the keys on the front panel until the main menu is
displayed. This will take about 3 seconds.
5. Move the cursor to 2. “Configuration”, then press Enter.
6. Select 1. “Change Passwords” and press Enter.
7. Select “Yes” by pressing the up arrow, then Enter.
http://www.chromalox.com
Chromalox Tel: 615-793-3900 • Fax: 615-793-3563 • www.chromalox.com 3
8. Select “Program Password”, and press Enter.
9. Enter 1111 for password by using the up arrow and right arrow. This will enable
password protection for the “Configuration Menu” option, in the main menu.
10. Press Back to exit one menu level.
11. Select 2. “Configuration”, and then Enter.
12. You will see the prompt to enter the password. Enter 1111 and press enter. You
will then enter the configuration menu.
13. Select 2. “Change Program”, and then Enter.
14. Leave all outputs set to N for “Reverse Acting outputs?”, this will cause all outputs
to be direct acting. Press Enter.
15. Set “Temperature Scale” to “F” for degrees Fahrenheit, by using the up arrow, then
press Enter.
16. Set “Zone to be displayed during normal operation” to “Any”, then press Enter.
This will allow the user to choose the zone that will be displayed on the CX224.
17. Set “Minutes of Alarm Silence when a key is pressed” to 1 minute, then press Enter.
This will cause the alarm to resound 1 minute after the output has been tripped, if
the current reading is still above the trip setting.
18. Set “If an input fails” to “Sound Alarm”, then press Enter. This will cause the alarm
to sound if the input fails.
19. Set “Zone 1 Choose input type:” to the input type that has been connected to
Zone 1 on the controller, then press Enter.
20. Set “Zone 1 Trip 1:” to 85º F, then press Enter.
21. Set “Zone 1 Trip 1: Trip Over or Under” to “Over”, then press Enter.
22. Set “Zone 1 Trip 1: Sound Alarm on trip” to “Yes”, then press Enter.
23. Set “Zone 1 Trip 1: Outputs to trip:” to “Output1:Y” and the other outputs leave as
N, then press Enter.
24. Set “Zone 1 Trip 1: Untrip Outputs by” to “Using Hysteresis”, then press Enter.
25. Set “Zone 1 Trip 1: Set Hysteresis:” to “5”, then press Enter.
http://www.chromalox.com
Chromalox Tel: 615-793-3900 • Fax: 615-793-3563 • www.chromalox.com 4
26. The display will read “Zone 1 Trip 2: Off”. Press & hold Enter until CX224 re-
initializes the controller (about 3 seconds).
27. The current temp reading will now be displayed on the controller for Zone 1.
28. Heat the sensor until the alarm and output trip. (Hold onto the sensor to increase
the temperature of the sensor or place inside of a plastic bag and then place the
bag and sensor into a cup of warm water).
29. Press Enter to silence the alarm. (Note: With the configuration settings above, the
alarm will continue turning on every minute until the temperature falls below the
trip point and hysteresis band).
30. Maintain the sensor above 85º F. After 1 minute the alarm will resound. Press
Enter to turn the alarm off. To prevent the alarm from resounding allow
temperature to fall below hysteresis level for alarm trip point.
31. Allow the sensor to cool so that Output 1 will untrip. Output 1 will turn off at 80º F,
due to the hysteresis setting of 5.
32. With the CX224 operating, remove a wire from the sensor on one of the terminals
on the CX224.
33. The alarm will sound because the CX224 is configured to sound the alarm on a
failed sensor.
34. Reconnect the wire that was removed.
35. The CX224 will resume reading the input and turn off the alarm.
You have now configured Zone 1 to trip on an over temp condition using hysteresis to
untrip. This means the controller will trip the outputs when the sensor reads a value of
75º F or higher and will not untrip until below 80º F.
Example 2: Under Temp Operation with Hysteresis @ 5º F
Note: Procedure is similar to Example 1, expect need to configure controller for “Under
Temp instead of “Over Temp”. Follow the guidelines below for complete instructions
on configuring the controller
1. Press and hold any one of the keys on the front panel until the main menu is
displayed.
2. Move the cursor to option 2. Configuration, then press Enter.
http://www.chromalox.com
Chromalox Tel: 615-793-3900 • Fax: 615-793-3563 • www.chromalox.com 5
3. You will be prompted for a password. The password was set in example, to be
1111. Enter 1111 and press Enter. If any other password is entered, except the
Master Password, the Configuration menu will not be accessed
4. Select 2. “Configuration”, and then Enter.
5. You will see the prompt to enter the password. Enter 1111 and press enter. You
will then enter the configuration menu.
6. Select 2. “Change Program”, and then Enter.
7. Change “Output 1” to “Y”, so Output 1 will now be reverse acting. Then press
Enter.
8. Change from “C” to “F”, then press Enter.
9. Set Zone to “Any”, then press Enter.
10. Set “Alarm Silence” to 1 minute, then press Enter.
11. Set “If an input fails” to “Sound Alarm”, then press Enter.
12. Set “Zone 1” to the input type that has been connected to Zone 1 on the
controller, then press Enter.
13. Set “Zone 1 Trip 1:” to 65º F, then press Enter.
14. Set “Zone 1 Trip 1: Trip Over or Under” to “Under”, then press Enter.
15. Set “Zone 1 Trip 1: Sound Alarm on trip” to “Yes”, then press Enter.
16. Set “Zone 1 Trip 1: Outputs to trip:” to “Output1:Y” and the other outputs leave as
N, then press Enter.
17. Set “Zone 1 Trip 1: Untrip Outputs by” to “Using Hysteresis”, then press Enter.
18. Set “Zone 1 Trip 1: Set Hysteresis:” to “5”, then press Enter.
19. The display will read “Zone 1 Trip 2: Off”. Press & hold Enter until CX224 re-
initializes.
20. The current temp reading will now be displayed on the controller for Zone 1.
21. Cool sensor until alarm and output trip. (Put sensor in a freezer or place sensor in a
bag and place in cold water).
http://www.chromalox.com
Chromalox Tel: 615-793-3900 • Fax: 615-793-3563 • www.chromalox.com 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.
http://www.chromalox.com
Chromalox Tel: 615-793-3900 • Fax: 615-793-3563 • www.chromalox.com 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.
http://www.chromalox.com
Chromalox Tel: 615-793-3900 • Fax: 615-793-3563 • www.chromalox.com 8
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
http://www.chromalox.com
Chromalox Tel: 615-793-3900 • Fax: 615-793-3563 • www.chromalox.com 9
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 85º F, then press Enter.
4. Set “Zone 1 Trip 2: Trip Over or Under” to “Over”, 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:” to “Output1:Y” and the other outputs leave as
N, then press Enter.
7. Set “Untrip Outputs by” to “Pressing Enter”, then press Enter.
8. Set “Zone 1 Trip 1: Set Hysteresis:” to “5”, then press Enter.
9. The display will read “Zone 1 Trip 2:” set to “Off”.
10. Press & hold Enter until CX224 re-initializes.
11. The current temp reading will now be displayed on the controller for Zone 1.
12. Heat sensor until alarm and output trip.
13. Press any button but Enter to silence the alarm.
14. Press Enter and output will untrip. If the output temperature after pressing Enter is
still high alarm will not resound or retrip until temp falls below set hysteresis band.
The output will also untrip regardless of pressing Enter if temp falls below 80º F,
the hysteresis band is still in effect with the “Pressing Enter” selection.
.
You have now configured Zone 1 to trip on an over temp condition using “Enter” to
untrip. This means the controller will trip the outputs when the sensor reads a value of
85º F or higher and will not untrip unless Enter is pressed or the temp falls below 80º F.
Example 6: Over Temp Operation with Manual Reset
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.
http://www.chromalox.com
Chromalox Tel: 615-793-3900 • Fax: 615-793-3563 • www.chromalox.com 10
3. Set “Zone 1 Trip 1:” to 85º F, then press Enter.
4. Set “Zone 1 Trip 2: Trip Over or Under” to “Over”, 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:” to “Output1:Y” and the other outputs leave as
N, then press Enter.
7. Set “Untrip Outputs by” to “Manual Reset Only”, then press Enter.
8. Set “Zone 1 Trip 1: Set Hysteresis:” to “5”, then press Enter.
9. The display will read “Zone 1 Trip 2: Off”. Press & hold Enter until CX224 re-
initializes.
10. The current temp reading will now be displayed on the controller for Zone 1.
11. Heat sensor until alarm and output trip.
12. Press any button to silence the alarm.
13. To untrip output hold down any of the buttons for at least 3 sec and move cursor
to 3. “Manual Reset”, then press Enter.
14. This is the only way to reset this output. The change in temperature will have no
effect on the controller once the output has been tripped, until the CT244 has
been manually reset.
You have now configured Zone 1 to trip on an over temp condition using “Manual
Reset Only” to untrip. This means the controller will trip the outputs when the sensor
reads a value of 85º F or higher and will not untrip unless the “Manual Reset” option
has been selected in the main menu.
Example 7: Over Temp Operation with Offset
1. Configure CX224 according to values in Example 1, then continue below.
2. Press and hold any one of the keys on the front panel until the main menu is
displayed.
3. Move the cursor to 2. “Configuration”, then press Enter.
4. Select 3. “Modify Offsets”, and then Enter.
http://www.chromalox.com
Tabla de contenidos
