VMI VVS OL82 - System Parameters

6.5 System parameters
The system parameters are different for every type of conveyor (Breaker, Carcass and
Tread).
The parameter values are stored in the VVS parameter file VVS_Prm.ini.
The default parameter values stored in the VVS parameter file VVS_DefPrm.ini.
Some system parameters deal with calibrations. For example, the 'Counts Per Meter'
parameter value is determined during encoder calibration.
6.5.1 Default breaker system parameters.
Parameter Description Recommended
values
Pass.
TBMs
Truck
TBMs
Counts Per Meter
1
Pulses per meter of the encoder.
Usually encoder calibration is started by the PLC.
For more information, refer to the paragraph
Encoder calibration on page 5 ‑ 23.
xxxx xxxx
Clamp Position Length passed under camera before the clamp is
lowered.
20.0
mm
20.0
mm
DogEar Tolerance Dog ear detection tolerance. 0 mm 0 mm
DogEar
Response
Percentage of the dog ear that will be
compensated.
0 % 0 %
Delta Body If width increases less than 0.5 mm in 50 ms
the breaker algorithm switches over to body
centering.
If 0 is entered here, the PLC has to take care of
the switch from LE to Body by setting the
command bit (refer to Command buffer on
page 6 ‑ 14).
5 mm 5 mm
Template Width Reserved for future use - -
Width Offset Reserved for future use - -
Tip‑P Proportional Gain tip.
P Parameters of the PID loop camera, VVS
controller, actuator used during centering of the
first Delay Clamp ms of the leading end.
20 3
Tip‑D Differential Gain tip.
D Parameters of the same loop controller.
50 10
Body‑P Normal Proportional Gain.
P Parameters of the PID Loop camera, VVS
controller, actuator used after Delay Clamp ms
passed, so a part of the leading end, body and
trailing end is centered with these parameters.
30 3
Body‑D Normal Differential Gain.
D Parameters of the same loop controller.
50 10
PARAMETERS
System parameters
6
THINKING FORWARD
VMI Vision System VVS (OL82) VVSX 13.0.12.0, VVSU 3.0.6 / 4 / 2016-07-11 / pd#175592
6-22