Control System
19
Service Manual – Scrubtec R 253 - RA40
Control System
Functional Description
The architecture of the electronic control system for
the machine’s electrical components is composed of
a function electronic board (EB1) and a display elec-
tronic board (EB2), in turn connected to a dashboard
instrument electronic board (EB4) which represents
the main user interface.
The function electronic board (EB1)
Function electronic board (EB1)
manages all components and drives the following
components directly:
- Brush motor (M1)
- Vacuum system motor (M2)
- Drive system motor (M3) with the relevant
Electromagnetic brake (BRK)
- Detergent pump (M4)
- Deck actuator (M5)
- Squeegee actuator (M6)
-
Solution flow solenoid valve (EV1)
The horn and the beep reverse is an integral part of
the function electronic board (EB1).
The display electronic board (EB2)
Display electronic board (EB2)
Flat cable from (EB2) to (EB4)
serves mainly as an aggregator for all input signals
(buttons) and outputs (LEDs) from the dashboard in-
strument electronic board (EB4),
Dashboard electronic board (EB4)
which it is connected to via 2 flat cables.
The ignition key (SW1) is inserted in relevant slot on
the steering column,
The display electronic board (EB2) sends all the in-
put signals from the Dashboard instrument electronic
board (EB4) to the function electronic board (EB1) us-
ing 2-wire 2-way serial communications protocol.
The system is completed by the on-board battery
charger (see the Electrical System chapter) which
also uses a proprietary serial protocol to communicate
with the function electronic board (EB1), in order to
display its operating status (charging phase) to the
operator on the LCD display.
https://harrissupplyind.com - To Order Parts Call 608-268-8080
