SEAL 1987822 - Caterpillar

The RAPTOR valve is connected to the control system (ECM) by the main connector. The engine harness mating connector is an Amphenol GTC06CF20-29S(025)188.
Figure 3-2. RAPTOR Wiring Diagram
Explosion Hazard-Do not remove covers or connect/disconnect electrical connectors unless power has been switched off or the area is known to be non-hazardous.
Supply Voltage
K = Supply voltage (+)L = Supply voltage (-)The supply voltage during normal operation must be 18 to 32 V, measured at the RAPTOR valve connectors. Input current is typically less than 1.0 A, but momentary current peaks can reach 6 A. The recommended power supply cable size is 1.3 mm2 or 16 AWG. The power supply wiring must be fused outside of the valve. A slow-blow type, 6 A fuse is recommended.Key Switch
M = Key switchThe key switch is used to cycle power to the RAPTOR valve. A high signal (connected to supply [+]) will turn the valve on, and a low signal (connected to supply [-] or open connection) will turn it off. This signal provides a convenient way to shut down the RAPTOR valve, so that a high-power (6 A) relay is not needed at the supply voltage input. When the key switch input goes low, the valve will switch off the internal power after the software has gone through a shutdown procedure.PWM Input
S = PWM input (+)T = PWM input (-)The PWM input is used as the secondary mass flow demand input. The scaling used on this secondary flow demand is received from the ECM via CAN and stored in the RAPTOR valve. It will switch to this input automatically if the CAN link, or primary flow demand input, is lost.As shown in Figure 3-2, there are two options for connecting the PWM input to the ECM. In the single-wire configuration, the RAPTOR PWM (-) input should be connected to the RAPTOR Battery (-) pin.If the RAPTOR valve has detected a shutdown failure (closing the valve is possible), the pull-up resistance on the PWM input is opened. An ECM which has open-circuit detection capability on its PWM driver can then detect that the RAPTOR valve has shutdown, even if the CAN link diagnostics have been lost.CAN ID Inputs
A = CAN ID 1B = CAN ID 2The CAN ID inputs are used to select which CAN identifiers will be used on the CAN bus. With no programming tools, the customer can select from the four pre-programmed CAN IDs through a hard-wired code in the engine harness. This is especially important where more than one RAPTOR valve is used on an engine. If one RAPTOR valve is replaced with another, the new valve will read the correct ID number from the engine harness connector. See the table below for the code definition. CAN Termination
R = Termination resistorP = Termination resistorThe internal termination resistor is used to terminate the CAN bus. According to the CAN specification, every CAN bus must be terminated at both ends of the bus. If a RAPTOR valve is connected to the far end