User Manual

TIC LEXION 500 Electric System
03/05 Lex-e-15a 15a-3
Description of function:
Grain tank unloading The grain tank unloading function is controlled by the grain tank module
A34. With the road travel circuit (S52) unlocked, the grain tank module
(RIO) A34 is supplied with power.
Further pre-conditions required for the grain tank unloading function
include a closed seat contact (Z5) and a closed grain tank unloading tube
swung out switch (Z30).
When the grain tank unloading switch S31 transmits a signal to the grain
tank module A34, the module energises the grain tank unloading solenoid
coil (Y35).
When the grain tank unloading switch S31 repeatedly transmits a signal to
the grain tank module A34, the module de-energises the grain tank
unloading solenoid coil (Y35).
Seat contact circuit
A
fter leaving the operator's seat, all circuits depending on the seat contact
(Z5) are interrupted after approx. 5 seconds.
Grain tank unloading aid When grain tank unloading is active, the grain tank module A34 supplies
the grain tank unloading aid switch (S32) and consequently relay K71 with
power at pin 86.
When relay K71 is energized, solenoid coil (Y36) is actuated via the
connection from pin 30 to 87a in the unenergized relay K69. When the
hydraulic cylinder reaches its end position, the oil pressure switch (Z25)
will close for a short time. Relay K72 switches and the connection from
pin 30 to 87 now actuates the solenoid coil (Y37). Diode (D4) now keeps
relay K72 actuated until the hydraulic cylinder reaches the other end
position and the oil pressure switch (Z26) cuts the electric circuit at pin 86.
The master valve (Y77) is actuated via the diode PCB (Do) in parallel with
one of the two solenoid coils (Y36/Y37) because these functions require
that pressure is built up in the system.