Travel, Low Speed - prime mover smx45 Master Service Manual

F-code Section
PT S5.0
Electrical Functions
Version no T-code
002 SMX
150
Return
C-code
5000

1.4. Travel, Low Speed

When the steering control handle is within 6 to 41 degrees of
the upper rest position and the thumb controls are rotated
from neutral, the travel signal is detected via hall effect
sensors. This converts into a travel instruction in the ETAC
(A2) and transmitted via the CAN to the transistor controller
(A1). The ETAC (A2) verifies that the reverser button is not
activated before supplying the travel command to the
transistor controller. The ETAC (A2) verifies that arm angle B
switch (S25) is engaged for slow speed travel mode. The
transistor controller provides a negative pin J5-4 to the main
contactor coil (K10) closing the main contactor (K10) and to
the main contactor relay (K4). The main contactor relay (K4)
provides battery voltage to the positive side of pump
contactor coil (K30), brake coil (Y1), lower valve coil (Y10)
and horn (H1). The transistor controller provides a negative
pin J5-5 to the brake coil (Y1) releasing the brake. The
voltage at M- of the drive motor will vary from 24V to
approximately 20V. The voltage is proportional to the position
of the thumb controls. The drive wheel starts to rotate in the
selected direction at a speed proportional of the thumb
controls.
Master Service Manual 2006-12-12