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3. Operation
3.13 Control system
3.13.1 Control system overview
The air cart has an electronic system to monitor and control the machine functions. The ISO Monitor
system is based on the ISO 11783 standard, also referred to as ISOBUS. ISOBUS is a communication
standard that enables a variety of agricultural electronics systems to communicate to each other. The
purpose is to integrate all current and future farm functions by standardizing communication between the
tractor and implement. ISOBUS permits the use of the same tractor terminal on a number of different
machines and control of a wide range of implements without the reprogramming a system.
3.13.2 System hardware
The ISO system includes an electronic control unit (ECU), which connects different sensors and an electric-
over hydraulic (EOH) meter drive system. The ECU communicates with the virtual terminal (VT) located
inside the tractor cab. The terminal shown information and enables the user to configure, calibrate, and
operate multiple systems from a single user interface.
3.13.2.1 Raven electronic control unit
The ECU is mounted on the air system. The ECU monitors all system sensors and controls the meter
drives. The ECU connects to the terminal in the tractor cab through a connecting cable that plugs into the
front of the ECU on one end and into the standard ISOBUS connector on the tractor at the other end.
3.13.2.2 Virtual terminal
The virtual terminal (VT), also referred to as the terminal, in the tractor cab gives a user an interface for the
system. The terminal communicates with the ECU and any other ISOBUS-compatible equipment
connected to the system.
Several companies make ISOBUS-compatible virtual terminals. All terminals use the same screen icons to
show the main functions. The control screens, or pages, for the implement (which are displayed in the
center area of the screen) are the same for any ISOBUS-compatible terminal.
Contact the manufacturer of the virtual terminal on the tractor to make sure the terminal can be used with
the ISO system on this machine.
3.13.2.3 Blower speed sensor
The blower speed sensor (1) is an inductive sensor
on the blower fan. The blower speed sensor gives
speed information to the ECU.
Fig. 37
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Troubleshooting
