M 05 Change-over FF/DF
NO Change-over via belt drive
YES : Change-over via feeder
(signals dashed in diagram)
Sequence:
0 Start batch through START command.
Belt drive, prefeeder, totalization (counters)
start operating.
1 Abort batch through STOP command.
To avoid excess feed, belt drive continues
running for time TZ after feeder cut-off
(Parameters M 01, M 02, M 04).
2 Restart batch through START command.
3 Change-over point from full feed to dribble
feed FM = SET - A - F is reached. Signals
“Full Feed” and “Dribble Feed” change levels.
A and F are the pre-act cut-off points
(Parameters I 01 und I 02).
4 Cut-off point HM = SET - A
is reached and batch is complete.
Belt drive cuts off.
So as to avoid excess feed, prefeeder shuts
down as soon as differential amount M (TZ) is
reached (M 04 = NO).
M(TZ)=I*TZ/3600
I = Current feed rate filtered through
display filter G 01
TZ = Parameter M 02
5 Belt tracking and end of material flow.
If Parameters H and V are correctly set,
setpoint has now been reached. If not, see
Item “Adaptation”.
6. Change-over point from full feed to dribble
feed, if prefeeder is used for feed control
(Parameter N 05 = YES).
Pre-act cut-off point FMS is estimated on the
basis of the mean belt load.
FMS = VM - L * Q - M(TZ)
Q = Belt load displayed (Filter G 04)
L = Material path (M 03)
M(TZ)= See Item 4
Adaption:
After every completed batch, system uses the missing
amount to compute a correction value for cut-off point
A (I 02). Dribble feed changeover point is
automatically corrected.
Error = SETPOINT - amount fed
The new cut-off point for the next batch is computed
from the error and an evaluation factor.
F(new) = F(0ld) + FAK * Error
F =Batch cut-off point I 02
FAK =Adaption factor I 03
(see Parameter)
Release Signal:
Pending release signal acts as STOP command.
Alarm:
Batch is interrupted (motor and prefeeder cut off
immediately). Remedy fault, acknowledge error
message and restart..
Power DOWN:
Batch mode is cut off. Counter readings and values of
amounts fed remain stored for an unlimited period of
time. Resume batching with “Preselect Batch”
function.
“Abort Batch” function:
Abort batch. Control signal behaviour is the same as
after STOP command.
0837
INTECONT PLUS VBW
Details
BV-H2214 GB 97
Transmission to third parties and reproduction of
this documentation are not permitted.
SchenckProcess GmbH reserves all rights of
ownership and copyrights.
Technische
Redaktion PDE-RD
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