25
Service Manual – SC1500
Control System
Functional Description
The Control System consists of the A1 Control Board (Main Machine Controller) and the E1 Curtis 1210
Speed Controller.
The A1 Control Board controls the scrubbing and wastewater recovery functions based on Operator requests,
and motion and direction inputs from the E1 Curtis 1210 Speed Controller. The A1 Control Board can store
and display a variety of fault codes to inform the Operator of any machine fault conditions. The A1 Control
Board also supports special modes of operation called the “Programming Mode” and the “Service Test Mode”.
The Programming Mode is used primarily for “telling” the A1 Control Board how the machine is equipped so
that it can operate accordingly. The Service Test Mode allows you to operate various machine components
regardless of current inputs.
The E1 Curtis 1210 Speed Controller controls the drive motor that propels the machine based on Operator
requests. (Refer to the
Wheel System, Traction
section for more information.)
Component Locations
The following components are included in
this section:
• A1 Control Board
• E1 Curtis 1210 Speed Controller
The
A1 Control Board
is mounted to the
rear of the
Interface Panel Assembly
The
E1 Curtis 1210 Speed Controller
is
mounted inside of the
Control Panel
E1 Curtis
1210 Speed
Controller
A1 Control
Board
Interface
Panel
Assembly
Control
Panel
