Note: When the configuration of the scanner is determined, record the information. Refer to the Testing and Adjusting, "Worksheet".
Table 1 lists the configuration parameters that are programmable with the keypad.
| Configuration Parameters that are Programmable with the Keypad | |
|---|---|
| Number of engine cylinders ("CYLINDERS") | |
| Number of turbochargers ("TURBOS") | |
| Display only the turbocharger outlet temperature ("TURBO OUT"). Display only the turbocharger inlet temperature ("TURBO IN"). Display the turbocharger outlet and inlet temperatures ("TURBO OUT AND TURBO IN"). |
|
| Units for the display ("UNITS") | |
| Automatic scanning or manual scanning ("AUTOSCAN") | |
| Value for the scanner's filter ("FILTER VALUE") | |
| Setpoint for exhaust port temperature deviation ("SET CYL DEV") | |
| Setpoint 1 for high cylinder exhaust temperature ("SET CYL HI 1") | |
| Setpoint 2 for high cylinder exhaust temperature ("SET CYL HI 2") | |
| Setpoint 1 for high turbocharger outlet temperature ("SET TO HI 1") | |
| Setpoint 2 for high turbocharger outlet temperature ("SET TO HI 2") | |
| Setpoint for high turbocharger inlet temperature ("SET TI HI") | |
| Start-up timer ("SET TIMER") | |
| Arming temperature ("SET ARM TEMP") |
Table 2 lists the parameters and the configurations that are programmed at the factory.
| Configuration Parameters that are Programmed at the Factory | |
|---|---|
| Parameters | Default Configuration |
| Parameters for alarms for output switch 1 | "SET CYL DEV" "SET CYL HI 1" "SET TO HI 1" "SET TI HI" |
| Parameters for alarms for output switch 2 | "SET CYL HI 2" "SET TO HI 2" |
| Parameters for alarms that are armed by the status of the input for engine rotation | "SET TO HI 1" "SET TO HI 2" "SET TI HI" |
| Parameters for alarms that are armed by the arming temperature and the start-up timer | "SET CYL DEV" "SET CYL HI 1" "SET CYL HI 2" |
| State of the output switches | Normally open Nonlatching |
Configuring with the Keypad
For configuring the setpoints for the alarms, refer to Systems Operation, "Setpoints".
| "SETUP" key - This key is used to scroll through the parameters in the setup menu. |
| Up Arrow and Down Arrow - These keys are used to select values for the parameters in the setup menu. |
| "ENTER/ACK" key - This key is used to save new values. |
To configure parameters with the keypad, press the "SETUP" key during the normal display mode. After you select the desired configuration, press the "ENTER/ACK" key. "SAVED" is then displayed on the screen.
| "ESC" key - This key is used to exit from any function of the setup menu. |
If you are in the process of configuring but no changes to the configuration are desired, press the "ESC" key in order to exit from the menu. The scanner will return to the normal display. New information is saved only if the "ENTER/ACK" key is pressed and "SAVED" is displayed on the screen.
Some of the parameters have more than one level. For the configuration of the first level, the time limit between the keystrokes is 15 seconds. 60 seconds are allowed between keystrokes for other levels. If the time elapses without a keystroke, the scanner automatically returns to the normal display without saving any changes.
"UNITS" - The temperature can be displayed in °C or in °F. The temperatures are automatically converted to the selected units.
Use the following procedure to change the units:
- Press the SETUP key until "UNITS" appears on the display.
The current units will appear.
- Use the up arrow key or the down arrow key to change units.
- Press the "ENTER/ACK" key in order to save the change.
After "SAVED" appears, the display returns to the normal mode. The new units and the converted temperatures are displayed.
Note: To exit this function without changing the setting, press the "ESC" key before you press the "ENTER/ACK" key.
"AUTOSCAN" - This function enables automatic scrolling of the display.
For "AUTOSCAN" set to "YES", the number one channel is displayed first. The subsequent channels scroll through the display in numerical order at the rate of approximately two seconds per channel. The process is continuously repeated.
For "AUTOSCAN" set to "NO", the number one channel is displayed first. The operator must scroll through the subsequent channels. To scroll through the other channels, the operator must use the up arrow key or the down arrow key.
Use the following procedure to configure the "AUTOSCAN":
- Press the "SETUP" key until "AUTOSCAN" is displayed.
- Use the up arrow key or the down arrow key to SELECT "YES" or "NO".
- Press the "ENTER/ACK" key in order to save the new value.
Note: To exit this function without changing the setting, press the "ESC" key before you press the "ENTER/ACK" key.
"FILTER VALUE" - The scanner's filter is used to stabilize the reading from a thermocouple with a signal that is fluctuating. The filtering delays the rate of updating the information from the thermocouples. The filtering also delays the reaction of the output switches.
The values for the filter are numbered from 1 to 255. The value of 1 represents the minimum filtering. A value of 255 is the maximum filtering. The default value is 230. Table 3 lists some examples of the values and the approximate time for settling of the display.
| Values for Filtering and Approximate Time for Settling of the Display | |
| Value | Seconds |
| 1 | 2 |
| 128 | 2.5 |
| 200 | 5 |
| 210 | 6 |
| 220 | 8 |
| 230 | 10 |
| 240 | 14 |
| 250 | 37 |
| 253 | 75 |
| 255 | 204 |
Use the following procedure to set the value for the filter:
- Press the "SETUP" key until "FILTER VALUE" is displayed.
The display will show the current value.
- Use the up arrow key to increase the value. Use the down arrow key to decrease the value.
- Press the "ENTER/ACK" key in order to save the new value.
Note: To exit this function without changing the setting, press the "ESC" key before you press the "ENTER/ACK" key.
"CYLINDERS" - This parameter tells the scanner the number of active cylinders in the engine.
Use the following procedure to configure the number of engine cylinders:
- Press the "SETUP" key until "CYLINDERS" is displayed.
- Use the up arrow key or the down arrow key in order to select the desired number of cylinders.
- Press the "ENTER/ACK" key in order to save the new selection.
Note: To exit this function without changing the setting, press the "ESC" key before you press the "ENTER/ACK" key.
"TURBOS" - This parameter tells the scanner the number of active turbochargers on the engine. This parameter also tells the scanner the number of thermocouples to monitor for the turbochargers (inlet and/or outlet).
Use the following procedure to configure the number of turbochargers:
- Press the "SETUP" key until "TURBOS" appears on the display.
- Use the up arrow key for selecting the desired number of turbochargers.
- Use the down arrow key to select "TURBO OUT", "TURBO IN", or "TURBO OUT AND TURBO IN".
- Press the "ENTER/ACK" key in order to save the new selection.
Note: To exit this function without changing the setting, press the "ESC" key before you press the "ENTER/ACK" key.
"SET ARM TEMP" - The average cylinder exhaust temperature must achieve the arming temperature before the scanner activates the start-up timer. The arming temperature can be set to any temperature within the range of the scanner. The range of the scanner is 0 to 850 °C (32 to 1562 °F).
Use the following procedure to configure the arming temperature:
| "SETPTS" key |
- Press the "SETPTS" key until "SET ARM TMP" is displayed.
- Use the up arrow key or the down arrow key in order to select the desired temperature.
- Press the "ENTER/ACK" key in order to save the new selection.
Note: To exit this function without changing the setting, press the "ESC" key before you press the "ENTER/ACK" key.
"SET TIMER" - The start-up timer must elapse before the scanner can monitor the selected setpoints.
Use the following procedure to set the timer:
|
| "SETPTS" key |
- Press the "SETPTS" key until "SET TIMER" is displayed.
- Use the up arrow key or the down arrow key in order to select the desired number of minutes.
- Press the "ENTER/ACK" key in order to save the new selection.
Note: To exit this function without changing the setting, press the "ESC" key before you press the "ENTER/ACK" key.
Default Configuration
Note: The default configurations that are programmed at the factory can be reprogrammed. However, custom wiring, a computer, and the proper software are required. For more information, consult the appropriate Caterpillar Engine Customer Service.
Output Switches - The two output switches can be dedicated to any combination of setpoints. The default configuration is listed in Table 2. Each output switch can be configured to be normally open or normally closed. The default configuration is normally open. Each switch can also be configured for latching or nonlatching. The default configuration is nonlatching.
Note: The scanner's filter will delay the reaction of the output switches.
The output switches will react if the temperature is exceeded for a selected setpoint. A hysteresis of 5 °C (10 °F) prevents the output switches from rapidly turning on and off when the temperature is near the threshold. The hysteresis is also a factor when the temperature falls below the setpoint.
The output of a nonlatching switch is automatically cleared when the temperature falls below the setpoint and the hysteresis.
Latching output must be cleared by the operator. The operator must press the "RESET" key for approximately three seconds until "RESET" is displayed.
"SETPOINTS ACTIVE W/ARM TEMP & TIMER" - This parameter is a condition for arming of the setpoints for the alarm conditions.
All of the setpoints for the alarms can be configured to be armed by the input for engine rotation only. The circuit for the input for engine rotation must be open in order for the scanner to detect alarm conditions.
The setpoints for the alarms can also be configured to be armed by the arming temperature and the start-up timer ("SETPOINTS ACTIVE W/ARM TEMP & TIMER"). For more information, refer to Systems Operation, "Start-up Sequence".
Resetting the Factory Defaults
The original factory defaults are saved in the permanent memory of the scanner. If the parameters of the scanner have been changed and the original settings are desired, the scanner can be returned to the original settings at any time.
Note: If the settings are returned to the factory default settings, all of the parameters that have been configured in non-volatile memory will be changed.
Use the following procedure to return the scanner to the original configuration that was programmed at the factory:
|
| "SETUP" key |
| "RESET" key |
|
| "SETPTS" key |
- To access the factory settings, depress the "SETUP" key and simultaneously press the "RESET" and "SETPTS" keys.
"CAL" will be displayed.
- Press only the "SETUP" key again.
"DEFS" (defaults) is displayed.
- To configure the settings of the scanner to the original factory settings, press the "ENTER/ACK" key.
Note: To exit this function without changing the settings, press the "ESC" key before you press the "ENTER/ACK" key.