15
30
30. Motor and motor control
438 9145-81/07
06.42
Service
Manual
Function
DANGER
Be careful when measuring the electric components in the motor
control. All components have a potential difference of approx. 300 V
in relation to protective earth and neutral.
When the green LED on the motor control card is lit, the compo-
nents carry dangerous voltages.
The motor control lose all voltage about 10-30 seconds after the
voltage has been disconnected and the motor has stopped.
The motor control communicates with the programme unit via a serial two-
way interface. With the help of the motor control, the programme unit can
control not only the instantaneous motor rpm, but also with high precision
the acceleration and retardation of the motor in order to reach the target
rpm. The motor control continuously replies with information to the pro
-
gramme unit PCB regarding the current operating state and sends reports
if an error occurs.
Fig.
15
15
5936
Program-
me unit
Motor control
Voltage supply
X311
X301
X304
Relay output
X312
Motor
Feed
X302
Door lock switch
230 V
X308
Imbalance switch
Tacho input
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