MoTeC MDC2 - Manual (Page 4)

MoTeC MDC2 2 Functionality
MDC2 Functionality
Mode selection
There are six user selectable control modes, four of which are user configurable. The control modes can be
selected using the ACD toggle switch on the steering wheel.
The current mode is indicated in the top line of the dash centre display. Optionally, three mode lights (SNOW,
TARMAC and GRAVEL) can be wired directly to the MDC2 if the dash display is removed.
Control Mode Dash Display Top Line Lights (optional)
0% Lock Blank None
1 (Snow) SNOW
2 (Gravel) GRAVEL
3 (Tar) TARMAC
4 (Gravel/Tar)
/ (alternating)
GRAVEL + TARMAC
Constant Lock
(flashing)
SNOW + GRAVEL + TARMAC
Note: If the mode has not changed for one minute then the current mode is saved and will be used next time the
MDC2 is powered on.
Lock Calculation
Lock percentage applied to the centre diff is determined primarily by the vehicle speed, throttle position or engine
efficiency point (from a MoTeC ECU), and front to rear wheel slip.
Each of the four user modes are configured with an acceleration table, a braking table, a desired slip table and
slip control parameters. Slip control may be disabled if not required.
The lock percentage for a user mode is determined according to the following strategy:
Brake
ON
OFF
Desired
Slip table
(kph)
% lock
Vehicle
Speed
Throttle
Position or
Manifold
Pressure
Handbrake
ON
OFF
0%
Lock
Front & Rear
Speed
Slip
control
params
Slip
Calculation
(% lock)
+ MIN
100%
Lock
Accel
table
(% lock)
Brake
table
(% lock)