Dometic Waeco MagicSpeed MS880 Instructions De Montage Et De Service page 80

Connecting the electrical power to MagicSpeed
Selecting the signal input
There are two ways to record a reference signal for the cruise control:
Speed signal
The travel speed signal indicates the actual travel speed.
The travel speed signal must be used for vehicles with automatic trans-
mission.
If you use the travel speed signal for vehicles with manual transmission,
you must install a deactivation system to prevent engine overspeed (see
„Using engine overspeed protection" on page 80).
Engine speed signal (rpm)
The engine speed signal indicates the engine speed in rpm.
The cruise control can identify the travel speed using the engine speed
as long as you do not shift gear.
The engine speed signal is only suitable for vehicles with manual trans-
mission. You must install a switch-off system to prevent engine over-
speed (see „Using engine overspeed protection" on page 80).
Using engine overspeed protection
If a travel speed signal is used as a signal source on vehicles with manual
transmission, there must be an engine overspeed protection system in order
to prevent damage to the engine.
If you press the clutch while the cruise control is activated, the cruise control
must automatically switch off as the engine may otherwise be damaged.
There are two types of engine overspeed protection system:
If you use the blue cable to transmit the speed signal, you can connect the
yellow cable to transmit the engine speed and therefore ensure the en-
gine is protected.
If there is no engine speed signal, you can use the clutch switch. Install
the clutch switch on the clutch pedal (fig. 8 1, page 7) so that the cruise
control switches off automatically when the clutch pedal is pressed.
80
MagicSpeed MS880
EN