Service manual

Electrical Service Manual V4.0
6
6-5
CENTRAL COMMAND II
TIMED CIRCUITS
The controller has the capability to control a circuit with a certain amount of logic. We can
customize the operation of a component beyond the simple on off operation. Timers are
used for our vacuum motors and our squeegee actuators to make the machine operation
more user friendly. The timer settings are changed through the controller programming.
BATTERY METER
The battery meter is integrated into the controller and the status of the battery is displayed
on the LCD screen. The battery condition is monitored very differently from a traditional
battery meter. The battery condition is calculated by measuring the internal resistance of the
battery pack. The battery meter is designed to read properly when the battery is under load.
It is not uncommon for the battery gauge to climb when the machine is under load.
OUTPUT NAMES & OPERATION:
The controller refers to the different outputs as follows;
Brush = Brush deck output
The brush deck output is turned on and off by the controller based on its parameters. The
output is a pulse width modulated output that is soft started according to the controllers
parameters. The output amperage is monitored via the controller and its “Down pressure
Control” circuit.
Vac = Vacuum motor output
The vacuum motor output is turned on and off by the controller based on its parameters.
The output is a pulse width modulated output that is soft started according to the controllers
parameters. The motor is turned after a delay controlled by the controller’s program.
Drive = Drive motor output
The traction drive motor is turned on and off by the controller in relation to the throttle input
and the reverse switch, The acceleration and deceleration rates are controlled by the con-
trollers program.
Aux 1 = Brush deck actuator
The brush deck actuator output is turned on and off by the controller based on its program.
EVERY TIME the controller is powered up the Aux 1 output is powered for 4 seconds to
raise the bush deck to the top of it’s travel. When the brushes are turned on the brush deck
actuator will lower the brushes for 3 -6 seconds depending on the controller’s program.
When the machine starts scrubbing the Aux 1 output drives the brush deck up and down rel-
ative to the “Down Pressure Control” direction. When the machine is stopped, the controller
will raise the brush deck for 1 - 3 seconds dependent on the controller’s program to assure
the scrub brushes start under reduced load. When the brushes are turned off the controller
raises the brushes for 3 -6 seconds depending on the controller’s program.
Aux 2 = Squeegee lift actuator
The squeegee actuator output is turned on and off by the controller, based on its program.
EVERY TIME the controller is powered up Aux 2 is powered for 4 seconds to raise the
squeegee to the top of it’s travel. When the squeegee switch or Uni-Touch switch is turned
on, the squeegee drops to the floor. If the machine is switched into reverse, the Aux 2 raises
the squeegee lift immediately. When the machine is switched back into forward, the squee-
gee lowers itself again. When the Squeegee or Uni-Touch switch is turned off the squeegee
will stay down for 10 seconds after it is turned off and then it will raise.