PLATE 1838449 - Caterpillar

Pulse Width Modulation (PWM) Outputs - General Information
The OCP support two isolated analog PWM output channels. Each channel supports a 2-wire conductor with a shield.The range for the PWM outputs can be configured for 0 to 100% or 5 to 95%. The data range can be configured. The data range must be set to the generator voltage. The output signal is approximately 6V peak.Each PWM output contains a parameter that is called "Data Identifications". Any PWM output can be configured for use with any of the data identifications that are listed in Table 1.
Table 1
Valid Data Identifications
GOV DESIRED ENG SPEED
ENGINE SPEED
ENGINE COOLANT TEMP
UREA LEVEL
ENG OIL TEMP CUSTOM PARAMETER #1
CUSTOM PARAMETER #2
CUSTOM PARAMETER #3
OUTPUT FROM SCADA
ENGINE FUEL LEVEL Viewing Current PWM Output Status
Use the following steps to view the status of a PWM output.
Illustration 1 g02266893
Use the navigation keys to highlight "VIEW" at the main menu screen. Refer to Illustration 1.
Press the "OK" key.
Illustration 2 g03008005
Use the navigation keys to highlight "I/O STATUS" at the view screen. Refer to Illustration 2.
Press the "OK" key.
Illustration 3 g02266897
Use the navigation keys to highlight "PWM OUTPUTS" at the I/O status screen. Refer to Illustration 3.
Press the "OK" key.
Illustration 4 g03008007
Refer to Illustration 4. The status of all PWM outputs is displayed. A "dash" under an output number indicates the output is programmed, but is inactive. A large "X" under an output number indicates the output is disabled. A number under an output number indicates the output is programmed and is active.
Use the left or right navigation keys to select the PWM output that is to be viewed.
Press the "OK" key.
Illustration 5 g03008008
The usage type, range, min data and max data will be displayed for the selected analog output. Refer to Illustration 5. Programming PWM Outputs Using the Display
Use the following steps to configure a PWM output with the use of the OCP display.
Illustration 6 g02268073
Use the navigation keys to highlight "CONFIGURE" at the main menu screen. Refer to Illustration 6.
Press the "OK" key.
Illustration 7 g03003200
Use the navigation keys to highlight "INPUTS & OUTPUTS". Refer to Illustration 7. Note: Access to the "INPUTS & OUTPUTS" submenu is accessible from the menu selection "ALL SETPOINTS".
Press the "OK" key.
Illustration 8 g02267038
Use the navigation keys to highlight "PWM OUTPUTS". Refer to Illustration 8.
Press the "OK" key.
Illustration 9 g02268393
Use the navigation keys to highlight the desired PWM output that is to be programmed. Refer to Illustration 9.
Press the "OK" key.