97
C72
Measurement of angular deviation
Options:
None.
Special function:
None.
Description
1.
Remove wheel or test rotor and centering cone from the adaptor.
With p variants fi t the spacer bushing, the medium centering cone and the clamping sleeve
without clamping head onto the bushing and carry out clamping operation.
Set code C72.
2.
Press START key in order to initiate temporary compensation of unbalance.
3.
Insert the user calibration weight into the adaptor fl ange so that it extends to the left and
press the START key.
4.
Insert the user calibration weight into the adaptor fl ange so that it extends to the right and
press the START key.
After three measuring runs the angle for the rear transducer is read out.
The step numbers are indicated on the left display:
angle = arg(2
nd
measuring run – 1
st
measuring run) - arg(3
rd
measuring run – 1
st
measuring run)
Display on screen balancers:
1. Field : Rear transducer
2. Field : Front transducer
If C90 is performed, the shown values are saved in two new persistent objects:
p541 : Rear transducer
p542 : Front transducer.
Comments:
Values saved in two new persistent objects.
C74
Display of angular position of main shaft, incremental encoder test
Options:
None.
Special function:
Reset of incremental encoder fl ags
Description:
Once this code is called up, the angular position and incremental encoder status register are display
continuously.
On digital machines the angular position is displayed in initially. Pressing the Option key toggles the right-hand display
between angular location and status register.
F o r a s h o r t t e s t t u r n t h e m a i n s h a f t a t l e a s t 2 t u r n s i n b o t h d i r e c t i o n s , t h e s t a t u s r e g i s t e r t h e n
m u s t s h o w
2 3 F .
For detailed status information see below.
Angular position:
As long as the incremental encoder has not jet synchronized with the zero reference, the angular location reading is
“- - -”.
After synchronization the angular position is display as a value in a range between 0 and 511.
Status register:
The status register is read out in form of a three-digit hexadecimal code XYZ:
X signals the status of the incremental encoder:
0
not initialised (only in case of an software malfunction)
1
not synchronised
2
synchronised
YZ covers the 8 fl ags er, ev, sr, sv, ba, ab, b, a
a
A channel signal available
b
B channel signal available
ab phase sequence channel
A before B identifi ed (reverse rotation)
ba phase sequence channel B before A identifi ed (foreward rotation)
sv zero reference identifi ed in forward rotation
sr
zero reference identifi ed in backward rotation
ev synchronising error in forward rotation
er
synchronising error in backward rotation
SM HOF GEODYNA 7600 Rel.D
