General Information; Operator's Manual; Toro Electronic Controller (Tec); Can--Bus Communications - Toro Greensmaster TriFlex 3320/3420 Service Manual

General Information

Operator's Manual

The Operator's Manual provides information regarding
the operation, general maintenance and maintenance
intervals for your Greensmaster machine. Refer to that
publication for additional service information.

Toro Electronic Controller (TEC)

Greensmaster TriFlex Hybrid 3320 and 3420 machines
use a Toro Electronic Controller (TEC) to manage 12 volt
machine electrical functions. The controller is micropro-
cessor controlled that senses the condition of various
switches (inputs) and directs electrical power to control
appropriate machine functions (outputs) based on the
inputs. The status of inputs to the controller as well as
outputs from the controller can be monitored with the
Diagnostic Display (see Special Tools in this chapter).
CAN- -bus Communications
System communication between electrical components
on Greensmaster Hybrid TriFlex machines is accom-
plished on two (2) CAN--bus communication systems.
The CAN--bus system reduces the number of electrical
components and connections used on the machine and
allows the number of wires in the wire harness to be re-
duced.
One of these CAN--bus systems allows TEC controller
communication between machine 12 volt components
(e.g. engine components, InfoCenter display). The sec-
ond CAN--bus system provides necessary control for
the electric cutting reels system (generator, cutting reel
motors). An isolation module is included in the machine
electrical system to allow communication between the
two systems while maintaining ground isolation for the
48 volt system.
Electrical System
IMPORTANT: Before performing any welding on the
machine, disconnect the battery cables from the
battery, disconnect the wire harness connector
from the Toro Electronic Controller(s) and discon-
nect the terminal connector from the alternator.
These steps will prevent damage to the machine
electrical system.
CAN identifies the Controller Area Networks that is used
on the Greensmaster. Two (2) specially designed,
twisted wires form the bus for both of the networks used
on the Hybrid machines. These wires provide the data
pathways between machine components. The engi-
neering term for these two (2) wires are CAN--high and
CAN--low. At the ends of the twisted pair of bus wires are
120 ohm termination resistors.
Each of the components that is controlled by the CAN--
bus link only needs four (4) wires to operate and commu-
nicate to the system: CAN--high, CAN--low, B+ (power)
and ground.
IMPORTANT: The termination resistors at the ends
of the bus wires are required for proper electrical
system operation.
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