Bosch WBE 4110 Instrucciones De Reparacion página 25

is, that the difference is 180°. The crests of a signal are
lined up with the troughs of the other and vice versa.
Fig. 4: Ratio between the tensions measured by the pick-ups
To enter the test menu press "SET" until the notice
"TST" appears on the left display and then press "MM/
INCH" (1.5s Max). Now the display will show the notice
"Msr".
If you press + DISTANCE, you will see on the displays
both the values in sequence read by the pick-up during
the last launch and the phase angle shown in degrees.
In order to monitor if the pick-ups work correctly, follow
these instructions:
1. mount a test wheel on the machine (14-15" of iron)
and balance it perfectly;
2. apply a single test weight outside (for example 100g)
and make a test launch.
At the end, check the values: the tension value of the
internal pick-up must be always less than the tension
value of the external pick-up. The internal one must go
between 1.2 and 1.8.
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 Description
Msr
ex.: 384
ex.: 603
ex.: 179 ex.: 580
ex.: 2
NOTES FOR THE ASSISTANCE:
If we check the ratio between the pick ups and the dif-
ference of phase and we find values out of tolerances,
we must substitute the board (chapter 9) or substitute
the sensors of the pick-ups (chapter 8.4.2).
Robert Bosch GmbH
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 dif-
ference of phase
4° value: rounded off ra-
tio between the pick-ups
Auto-diagnosis menu | WBE 4110 | 25
8.2 Enc
It indicates the function to directly check the encoder:
the number of spaces goes from 0 to 255.
To enter the menu, when you see Test (see above),
press "SET" again.
Left Display Right Display Description
Enc
NOTES FOR THE ASSISTANCE:
The malfunctioning of the tool is detected automatically
by the programme that will show on the display "Err
10" or "Err 11", showing also on the board the notice
"enc". Verify the cause of the defect to correct the
problem properly (see the picture).
Defect Correction
The machine Check that there is no dust in the discs.
+
does not get at + Check that the discs are intact.
256 spaces.
The machine + Check that the encoder is connected.
does not count + Substitute the encoder (code 653272).
any space.
8.3 Sp
The abbreviation indicates the function that directly
controls the speed that (turns/minute) the shaft
achieves. If you close the carter and press "START", it
is possible to check the speed achieved during the bal-
ancing phase (167±5 turns/minute).
Left Display Right Display Description
SP
NOTES OR THE ASSISTANCE:
Here you can find the most common defects of the en-
gine:
Defect Correction
The wheel does + Check the electric connections.
not turn. + Substitute the engine (code 654370).
The engine + Check the tension of the drive.
does not achieve + Substitute the engine (code 654370).
the balancing
speed. Check
that the encod-
er is connected.
It shows the position of the
encoder from 0 to 255
Speed in turns/minute of the shaft
|
1 695 654 756 2008-10-17
en