Interface A2, Release Date: 02.03.2022
Page 49
LVMC User Manul A2 - 499.027.82
OPTRONIC AG
SWITZERLAND
Unteregger Strasse 53
CH-9403 Goldach
Phone: +41 (0)71 844 02 00
Fax:
+41 (0)71 844 02 10
e-mail: [email protected]
web: www.optronic.ch
Explanation of the available settings:
“Minimum Size”:
The minimum object size that is detected by the channel. The LVMC subtracts a
safety margin from this value, and in reality uses the lowered value as lower limit, in
order to guarantee, that no objects get missed.
In automatic mode, the minimum object size can only be entered for channel 1. The
entered value is the lower limit for the minimum object size of the other channels.
“Minimum Passing
Time”:
The minimum time an object must cover the sensing area so that it is counted by
the channel.
“Minimum Area”:
The minimum area an object must have so that it is counted by the channel. To
calculate the area, the LVMC sums up the measured object size (the covered part of
the sensing area) over the time the object passes the sensing area. Therefore, the
area must be entered in unit time multiplied by length.
This parameter can be used as a replacement for channel parameters “Minimum
Size” and “Minimum Passing Time”, as they also define a simplified area.
In automatic mode, the minimum area can only be entered for channel 1. The en-
tered value is the lower limit for the minimum area of the other channels.
“Gap
Suppression
Time”:
An object may have one or more locations with size smaller than the minimum size
entered for the channel. By use of this parameter, this form of gaps can be sup-
pressed. Enter the maximum time a gap that should be suppressed can last.
In automatic mode, the gap suppression time can only be entered for channel 1.
The entered value is the lower limit for the gap suppression time of the other chan-
nels.
“Minimum Expected
Passing Time”:
The minimum time a part is assumed to cover the sensing area. If an object is de-
tected by the channel, the channel does not count another object until this time has
passed. If this time expires while the sensing area is already covered by another
object, this part is also not counted.
This parameter is available for compatibility with the previous device generation. It
is replaced by parameter “Gap Suppression Time”.