En (Encoder); Sp (Speed) - Bosch WBE 4200 Instandsetzungsanleitung

en 46 | WBE 4200 | Auto-diagnosis menu
In order to monitor if the pick-ups work correctly, follow
these instructions:
4. mount a test wheel on the machine (14-15" of iron)
and balance it perfectly;
5. apply a single test weight outside (for example 60g)
and make a test launch.
At the end of the control measurement
R
the internal pick-up voltage value must be below the
external pick-up voltage value.
R
the ration between the external pick-up value and
the internal pick-up value must be between 1.2
R
and 1.8, the phase difference must be 180° ± 1°.
As you can see from the picture below, to calculate the
phase angle, you must divide the external pick-up value
by the internal one. In this way, you can get the ratio
(603 / 384 = 1,57).
Left Display Right Display
MSR
ex.: 892
ex.: 1384
ex.: 180 ex.: 810
ex.: 2
NOTES FOR THE ASSISTANCE:
If we check the ratio between the pick ups and
the difference of phase and we find values out of
tolerances, we must substitute the board (chapter 9.2)
or substitute the sensors of the pick-ups (chapter 9.5).
7.2

EN (Encoder)

It indicates the function to directly check the encoder:
the number of spaces goes from 0 to 199.
Left Display Right Display
En
NOTES FOR THE ASSISTANCE:
The malfunctioning of the tool is detected automatically
by the programme that will show on the display Err22,
Err10 o Err11 showing also on the board the notice En,
Verify the cause of the defect to correct the problem
properly.
Defect Correction
R
The machine does Check that there is no dust in the discs.
R
not get at 200 Check that the discs are intact.
spaces.
R
The machine does Check that the encoder is connected.
R
not count any Substitute the encoder.
space.
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1 695 600 091 2012-11-16
Description
Press DISTANCE to roll down the
menu
1° value shown: tension
measured by internal pick-up
2° value shown: tension
measured by external pick-up
3° value shown: angle of
difference of phase
4° value: rounded off ratio
between the pick-ups
Description
It shows the position of the
encoder from 0 to 199
Fig. 7: Encoder
7.3

SP (Speed)

The abbreviation indicates the function that directly
controls the speed that (turns/minute) the shaft
achieves
Closing the wheel protection cap and pressing the <I>
key, it is possible to check the speed reached during
balancing.
Left Display Right Display
SP
NOTES FOR THE ASSISTANC E:
Here you can find the most common defects of the
engine:
Defect Correction
R
The wheel does Check the electric connections.
R
not turn. Replace the engine.
R
The engine does Check the tensioning of the
not reach the transmission belt.
R
balancing speed. Check that the encoder is connected.
R
Replace the engine
R
The wheel does Check, and eventually replace, the
not brake (in power board.
R
reverse). Check, and eventually replace, the
condenser.
Fig. 8: Engine
i
The functioning of the engine is completely managed
by the power board.
Description
Speed in turns/minute of the
shaft
Robert Bosch GmbH