PTO Mode (Ramp Up/Ramp Down) to Controls the Engine Speed for Caterpillar Engines

PTO Mode

Figure 1.1 - Increase/Decrease RPM (C15 Engine)

PTO Mode allows the ECM to be programmed to either one of the two PTO Configurations that are available.

Ramp Up/Ramp Down - When PTO Mode is programmed to Ramp Up/Ramp Down, the ECM allows PTO operation with traditional features.
Set/Resume - When PTO Mode is programmed to Set/Resume, the ECM allows PTO operation with enhanced features.

Figure 1.2 - Manual/Auto and DEC/HOLD/INC (C18 Engine)

1). Access the Configuration menu on CAT ET

A. Connect to CAT ET. Read More: How to Connecting Caterpillar ET Software to the ECM.

B. Select the Service tab.

C. Select the Configuration tab to view the Configuration Parameters.

→General Information - PTO Mode

Figure 1.3 - PTO Mode

→ECM Connector #J1 - C15/C18 Engine

PTO Interrupt Switch (Pin #41)

PTO Enable Switch (Pin #56)

PTO Ramp Up/Set Switch (Pin #58)

PTO Ramp Down/Resume Switch (Pin #60)

2). Check the Circuit for the PTO Mode

Use CAT ET to monitor the PTO Mode for the Engine. Read More: Status Tool on Caterpillar ET Software.

#Ignition/Power Switch ON (HOLD)

→PTO Mode = Ramp Up/Ramp Down

→Throttle Lock Switch = On

→Throttle Lock Resume/Decel Switch Position = Off

→Throttle Lock Set/Accel Switch Position = On

Figure 1.4 - PTO Mode (Ramp Up/Ramp Down)

#Press the INCREASE RPM (INC) button

→PTO Mode = Ramp Up/Ramp Down

→Throttle Lock Switch = On

→Throttle Lock Resume/Decel Switch Position = On

→Throttle Lock Set/Accel Switch Position = Data Invalid

Figure 1.5 - Increase RPM (INC)

#Press the DECREASE RPM (DEC) button

→PTO Mode = Ramp Up/Ramp Down

→Throttle Lock Switch = On

→Throttle Lock Resume/Decel Switch Position = Data Invalid

→Throttle Lock Set/Accel Switch Position = On

Figure 1.6 - Decrease RPM (DEC)

3). Monitor using the Real Time Graphing while simulate the PTO Mode

→PTO Mode C18 = Throttle Lock Switch, Throttle Lock Resume/Decel Switch Position, Throttle Lock Set/Accel Switch Position, and Desired Engine Speed. Read More: Real Time Graphing using Caterpillar ET Software.

→Press the INCREASE RPM (INC) button.

Figure 1.7 - INC button

→Press the DECREASE RPM (DEC) button.

Figure 1.8 - DEC button

Accessing Prognostics Download on Caterpillar ET Software

Equipment ID (NOT PROGRAMMED) on Caterpillar ET Software

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1 Response to "PTO Mode (Ramp Up/Ramp Down) to Controls the Engine Speed for Caterpillar Engines"

SpikeKKWednesday, November 22, 2023 at 11:18:00 PM PST
The PTO mode ramp up/ramp down control provides a smooth and controlled way to engage and disengage the PTO, which can help to protect the PTO and other components from damage. This feature is also useful for applications where precise control of the PTO speed is required.