TUBE AS 2Q8026 - Caterpillar

Illustration 1 g01049209
Interface control moduleThe function of the interface control module is to provide a connection between the remote control system and the machine electrical system. It also minimizes the current draw through the contacts in the receiver.
Illustration 2 g01049210
Interface control module (cover removed)
Illustration 3 g01050680
Interface control module (cover removed) (1) Relay 11 for forward (2) Relay 12 for fire suppression (if equipped) (3) Relay 13 for tilt back (4) Relay 14 for dump (5) Relay 15 for lift (6) Relay 16 for lower (7) Relay 17 for engine stop (8) Relay 18 for parking brake (9) Relay 19 for 1st speed (10) Relay 20 for horn (11) Harness connector (12) Circuit breaker (10 amp) (13) Circuit breaker (10 amp) (14) Harness connector (15) Relay 22 for rear lights left side (16) Relay 21 for front lights right side (17) Relay 10 for steer left (18) Relay 9 for reverse (19) Relay 8 for steer right (20) Relay 7 for throttle (21) Relay 6 spare (22) Relay 5 service brake (23) Relay 4 brake control (24) Relay 3 rear lights right side (25) Relay 2 for front lights left side (26) Relay 1 engine startNote: The shaded relays in Illustration 3 are used for proportional remote control functions. The non-shaded relays are used for on/off remote control functions.Harness connector (11) and harness connector (14) are mounted on each end of the interface control module. Harness connector (11) is connected to the receiver. Harness connector (14) is connected to the machine electrical system.Mounted in the center of the interface control module is circuit breaker (12) and circuit breaker (13). Circuit breaker (12) and circuit breaker (13) are 10 amp automatic reset circuit breakers. Circuit breaker (12) and circuit breaker (13) protect the electrical circuits of the receiver and the interface control module.The interface control module contains 22 relays. One relay for each remote control function. Seven relays (3), (4), (5), (6), (17), (19) and (20) are proportional function relays and fifteen relays (1), (2), (7), (8), (9), (10), (15), (16), (18), (21), (22), (23), (24), (25) and (26) are on/off function relays.When the remote control switch in the operator station is in the ON position, the seven relays for proportional functions will be energized. When a proportional function on the transmitter is selected, a PWM electrical signal is sent from the receiver through the contacts of the relay to the machine electrical system. When the remote control switch in the operator station is in the ON position, the fifteen relays for on/off functions have 24 VDC available at the contacts. When an on/off function on the transmitter is selected, an electrical signal is sent from the receiver to energize the corresponding relay. The relay switches 24 VDC to the machine electrical system.