Dedicated PTO Operation

switch is switched OFF (open circuit). The Cab Switches PTO Configuration can also use the Cruise Set/Resume switch to adjust engine rpm, but required a dedicated PTO On/Off switch instead of the Cruise On/Off switch. Dedicated PTO operation also provides the ability to use preset speeds or additional switches and throttles to control engine speed. Remote PTO applications allows setting engine rpm via OEM or chassis body builder installed On/Off and Set/Resume switches and the Cab Switches and Accelerator are ignored. Refer to “Dedicated PTO Operation” on page53 for further details. OEM provided and installed components required: 1) Cruise Control On/Off switch. 2) Vehicle speed source. 3) Clutch Pedal Position switch (for Manual and Eaton Top 2 Transmission Style). 4) Service Brake Pedal Position switch. 5) Transmission Neutral switch (automatic transmissions with Transmission Style parameter programmed Automatic Option 3 or

Automatic Option 4). 6) Cruise Control Set/Resume Switch. 7) PTO On/Off Circuit (for PTO Operation). 8) PTO Set/Resume Switch (for Remote Switches PTO Operation). 9) PTO Remote Accelerator Position Sensor (for Remote Throttle PTO Operation). 10) PTO Switch On Lamp. Customer Parameter programming required: 1) For Dedicated PTO operation the PTO Configuration must be programmed to Cab Switches, Remote Switches, or Remote

Throttle.

14.1 Dedicated PTO Operation

Engine PTO operation requires some or all of the following OEM installed switches: PTO ON/OFF, Set/Resume (for speed adjustment only), Service Brake Pedal Position #1, Service Brake Pedal Position #2, Transmission Neutral, and Clutch Pedal Position. Refer to “Wiring Diagram 10 -Preset Switches Wiring Diagram” on page 48, “Wiring Diagram 13 -Service Brake Pedal Position Switch #2 Circuit” on page 52, and “13.13Transmission Neutral Switch” on page 52. The following options are available for applications requiring control of engine speed from inside or outside of the cab. These options are available to enhance the engine’s capability for these applications. The system can be configured to operate the engine at specific programmable engine speeds, with a second set of PTO On/Off and Set/Resume switches, or with a second accelerator pedal position sensor. The cab accelerator pedal position sensor can be disabled or limited. A programmable torque limit is also available. There are four programmable PTO Configurations available: 1) Off. 2) Cab Switches. 3) Remote Switches. 4) Remote Throttle. The Remote/PTO features should provide enough functional capability to cover any typical application: Bulk Hauler, Fire Truck, Cement Mixer, Refuse Packer, Crane, Bucket Truck, etc. These inputs will allow the OEM or body-builder to add the necessary switches, ground, or accelerator pedal sensor reducing the amount of splicing and disturbance of the cab wiring. Caterpillar requires all switches, and all components used in these circuits meet the specifications as outlined in this document (refer to “13.1Switch to Ground Electrical Specifications” on page 47, “Sensor Common Connections” on page21, “13.9Switch-to-Battery Electrical Specifications” on page 51, and “Accelerator Pedal Position Sensor Electrical Specifications” on page31). Caterpillar recommends the OEM provide a customer access connector in an easily accessible location to aid installation of these features.