BrBrakake ae annd sd sppeeeed sd sysystteem / Dm / Deesisiggn an annd fd fuunnctctioion / En / Elelectctrriic bc brarakkee 1111.3.3
Edition 2007AEdition 2007A
111 1 Brake Brake and and speed speed systemsystem
Design and functionDesign and function
Electric brakeElectric brake
A-Ergo is fitted with aA-Ergo is fitted with an electric brake. The electric brake is a n electric brake. The electric brake is a safety brake with two fric-safety brake with two fric-
tion surfaces. The brake torque that can be tion surfaces. The brake torque that can be adjusted using an adjuster screw on the olderadjusted using an adjuster screw on the older
model (–2006w46), is generated by spring pressure. The brake is activated when the volt-model (–2006w46), is generated by spring pressure. The brake is activated when the volt-
age across the coil is cut, i.e. the trage across the coil is cut, i.e. the truck brakes when it has no power supplyuck brakes when it has no power supply..
When the brake is actuated the springs press on the plate, which is pressed axially toWhen the brake is actuated the springs press on the plate, which is pressed axially to
thethe rotorrotor. When the brake is to be released the coil is su. When the brake is to be released the coil is supplied with battery voltage.pplied with battery voltage.
TheThe magnetic field created betweemagnetic field created between the plate and the magnetic part allows the ron the plate and the magnetic part allows the rotor totor to
rotate freely.rotate freely.
The brake is actuated in four different ways (see also the wiring diagram):The brake is actuated in four different ways (see also the wiring diagram):
1.1. ViVia the a the drivdrive motoe motor regr regulatoulator wher when thn the regue regulator lator indicindicates ates a sea serious rious faulfault.t.
2.2. ViVia the sa the steerinteering seg servo rervo regulagulatorn, wtorn, which hich discodisconnecnnects the ts the brake brake coil coil supplsupply to y to thethe
plus terminal of the battery if plus terminal of the battery if a serious fault is indicated.a serious fault is indicated.
3.3. ViVia the fa the foot peoot pedal, wdal, which dhich discoisconnecnnects the ts the brake brake coil scoil supplupply to thy to the ple plus termus terminal inal ofof
the battery when the driver is not the battery when the driver is not longer actuating it.longer actuating it.
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