BERTHOLD TECHNOLOGIES LB4710-080 - Page 181

Chapter 3 Parameters
Mini-Switch LB 471
36
Note!
If the parameters
- time constant (code 12)
- switching threshold (code 17/18)
- hysteresis (code 19)
have been set to automatic, there is only a very small risk that
false values have been set.
We recommend to enable code 36 after every parameter change to
ensure that an incorrect setting will be recognized immediately.
Calibration error - Table
Error
code
Sub-
code
Designation
Explanation
Remedy
35
01
ECR < FCR
Empty count rate
lower than zero count
rate.
Determine empty
count rate or / and
zero count rate
new.
02
ECR < FCR
Empty count rate
lower than full count
rate.
Determine empty
count rate or / and
full count rate new.
03
FCR < ZCR
Full count rate lower
than zero count rate.
Determine full count
rate or / and zero
count rate new.
05
Distance
switch point
to FCR
Distance switch point
to full count rate is
too small. Danger of
switching errors.
Adjust switch point,
or increase time
constant.
06
Distance
switch point
to ECR
Distance switch point
to full count rate is
too small. Danger of
switching errors.
Adjust switch point,
or increase time
constant.
07
Hysteresis
too large
Hysteresis too large.
Increase time
constant or reduce
hysteresis.
08
Time constant
too small
Time constant too
small
Increase time con-
stant or set switch
point further into
the center.
Counting time for calibration (in seconds)
Enter length of time for count rate averaging
(Only in the professional mode)
Here you can enter the length of time to be used for averaging of
the calibrated count rates in code 30, 31 and 32. The factory set-
ting is 60 seconds.
Input limits: 5 … 600s.
Table 4:
Calibration error
C o d e 3 7