Check Belt Speed; Check Using Material - Schenck process Intecont Plus Belt Weigher Operating Manual

VBW

Check Belt Speed

The speed transducer frequency generator can be
driven by
1. Friction wheel in the lower belt run
2. Drive motor shaft.
In the first case, the entered characteristic value vs
(Parameter B 04) depends on the exact friction wheel
diameter; in the second, on the belt wrap factor.
Hence, check speed measurement for accuracy.
1. Acquire belt speed with stop watch and tape
measure.
To be on the safe side, conduct various
measurements and calculate mean value.
2. Read INTECONT speed display over the same
period of time.
3. Compare both values with one another and, if
necessary, correct characteristic value vs B 04.
old = old parameter value
new = new parameter value
Vg = measured speed
Va = read off speed
This method is also applicable with unknown
characteristic values.
If characteristic value vs is known and deviations are
excessive, the space between sensor (Namur
transducer) and gearing is too big. Check by switching
ammeter into sensor circuit.
Tooth over sensor: i= 0.1...1.65 mA
else: i = 1.65...8 mA
Neither level should exceed limit value 1.65 mA.
Commissioning
BV-H2214 GB 90
Checks or calibrations with check weights cannot
reproduce the actual circumstances to perfection.
Highly accurate weighing results can be achieved only
by various measurements with material and
subsequent correction.
For correction, use Parameter D 02.
Observe the following items:
1.
2.
3.
4.
5.
Example:
Old value of Parameter D 02 = 1
Within 15 min. a material amount of MW = 4.9 t is fed.
Difference in counter reading MA read on INTECONT
is 5.0 t.
Enter computed value into Parameter D 02 .
Technische
Redaktion PDE-RD
INTECONT PLUS

Check Using Material

Make sure the route from platform to material
collecting point is clean.
Ensure that material diverters, if any, do not
divert any material.
If feed screws or air slides are used between
platform and collecting point, feeding starts
approx. 30 min. before check measurement so
that normal build-ups are given.
Set dedustings to a minimum.
Ensure that hoppers or vehicles used for
transport of material to a legal-for-trade weigher
are cleaned and weighed before every filling
operation (tare).
= 1 x 4.9 = 0.98
——
5.0
Transmission to third parties and reproduction of
this documentation are not permitted. Schenck
Process GmbH reserves all rights of ownership
and copyrights.
0837