PRESSURE AND SELECTOR CONTROL VALVE GROUP 9P3050 - Caterpillar

Use the following guidelines for the wiring of the amplifier:
Illustration 20 g00745200
Top view of the amplifier without the coverTerminal strip and compression fittings
Insert the wires through the holes in the compression fittings. Secure each wire to the proper terminal. Then tighten the nuts on the compression fittings in order to form a seal around the cables.
The nominal supply voltage for the amplifier is 12 VDC or 24 VDC. The range of operational voltage for the amplifier is 10 to 35 VDC.
For wiring of the power supply, use a 2-wire cable with a minimum wire size of 18 AWG. The wiring for the power supply does not require shielding. Attach the wire for the positive supply voltage to terminal 10 of the amplifier. Attach the wire for the negative supply voltage to terminal 9 of the amplifier.
For wiring of the output signal, use a shielded 2-wire cable with a minimum wire size of 18 AWG. The cable must be shielded. The shield is grounded only to the amplifier. Attach the shield and the wire for the return signal to terminal 8 of the amplifier. Attach the wire for the output signal to terminal 5 of the amplifier.
For wiring to the rack position sensor, use shielded 3-wire cable with a wire size of 16 AWG. The cable must be shielded. Use a cable with an outside diameter of 4.95 to 10.72 mm (0.195 to 0.422 inch). Use a properly sized grommet for the end of the cable at the connector for the rack position sensor. Solder a socket onto the end of each wire for insertion into the connector for the rack position sensor.
Illustration 21 g00756184
Connector for the rack position sensor
For wiring to the rack position sensor, attach the shield to terminal 4 of the amplifier. The shield is grounded only to the amplifier. Attach one of the wires to terminal 1 of the amplifier and insert the socket for the wire into terminal "A" of the connector. Attach one of the wires to terminal 2 of the amplifier and insert the socket for the wire into terminal "C" of the connector. Attach the third wire to terminal 3 of the amplifier and insert the socket for the wire into terminal "B" of the connector.
Tighten the connector clamp onto the cable. Attach the connector to the rack position sensor.
Tighten the compression fittings onto the cables at the amplifier.After the wiring is installed, calibrate the amplifier. Refer to ""Calibration of the Amplifier"".Calibration of the Amplifier
Use a multimeter for reading the strength of the output signal. Set the scale of the multimeter according to the type of signal that is desired:
For output in voltage, use the scale for the voltmeter (DC). Attach the leads of the multimeter to terminal 8 and terminal 7 of the amplifier. Refer to Illustration 15.
For output in milliamperes, use the scale for milliamperes (DC). Attach the leads of the multimeter to terminal 8 and terminal 5 of the amplifier. Refer to Illustration 19.
Illustration 22 g00756218
Location of the green LED
Switch the