Challenge Titan 265, Instruction Manual

Page: 79 / 88

9.0 Parts List & Sequence of Operations
78
9.16 Electrical Sequence of Operation
NOTE: Please see the section on Hydraulic Sequence of Operation for more details.
Electrical Sequence of Operation Electrical Schematic References
Schematic Drawing Number: E-2853
A. Turn Main Disconnect switch to “on” position. If fuses F7 and F4 are conductive, power is brought to
the main control board (EE-2807-1). The line lights will
illuminate. Power is also brought to the circuit board.
Fuse F1 and F3 are located on the main control board
in the power panel. If fuse F3 is conductive, power will
be supplied to the logic on the board. If the logic is
functioning, the operator’s console display will function.
If fuse F1 and FL are conductive, power will be
supplied for backgauge movement.
B. Press CLEAR key on the keyboard to direct
the backgauge forward through the presetter. To coordinate the console display with the actual
backgauge position, the backgauge must be brought
forward through the presetter. When the backgauge
position reaches approximately five inches, the
presetter, located beneath the table, is actuated. The
display will then count up and down from this point as
signals are received from the incremental encoder. For
general backgauge information see C below.
C. Backgauge control via keyboard. The backgauge glide control on the keyboard is used
to manually control the backgauge position. The speed
of the backgauge motor will depend upon where the
actuator is pressed. The backgauge glide control acts
as a potentiometer, which controls the voltage that is
sent to the backgauge motor. If the backgauge motor
fails to move, the following should be checked: The
CLAMP UP prox. (IN 2), the HYD UP prox (IN 3), and
the KNIFE UP prox (IN 4) should be off.
D. Make a cut by closing the guard and pressing
the cut button. When the front guard is close, contacts for the left (A)
and right (B) safety interlocks close. The CUT button
LIGHT will light up, indicating that the machine is ready
to cut. When the CUT button is pressed, the hydraulic
motor relay (PUMP RELAY) will energize, and power
will be brought to the hydraulic motor. The KNIFE
LATCH solenoid will energize and the knife latch will
pull in. CUT solenoid A, B, and unload valve will
energize, and the machine will make a cut. When the
knife reaches the down position, the KNIFE DOWN
prox (IN 9) will open, which after a slight time delay,
causes the logic to de-energize the CUT solenoids,
bringing the knife and clamp to the up position. When
the clamp reaches the up position, the HYD UP prox.
(IN 3) will close, which causes the logic to de-energize
the unload valve. The hydraulic motor will stop after a
preset idle time.