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Operation
optoCONTROL CLS1000
5.4.3.3 LST / LowSensitive Teach-in
The LowSensitive teach-in mode (
LST
) can be used when small objects are to be detected against a rough background.
This teach-in mode prevents a result in which no differences can be detected between the background and the object
due to the amplification level being too high. In this regard, the sensor/controller measures a comparatively low intensity,
i.e. the amplifier level is moderately increased - low amplifier level is used so that smaller reflection differences do not
trigger a signal.
The amplification is increased until the measurement value is at approx. 30 % of EMR (end of measuring range = 4095).
The switching threshold is then set 10 % lower:
Measurement value 30 % of EMR (4095)
= approx. 1300
Switching threshold (10 % below the measurement value)
= approx. 1200
In Reflex mode, teach-in is done on the target. The target must be within the visual range of the sensor during teach-in
In Transmission mode, teach-in is done on a clear path. The target must be outside the visual range of the sensor for the
transmission path.
5.4.3.4 DT / Dark Teach-in / Background Teach-in
In Dark teach-in mode (
DT
), objects of different sizes are to be detected against a dark or free background.
To do so, the amplifier level is increased until the measurement value is at approx. 10 % of EMR (end of measuring
range = 4095). The associated switching threshold is then set at 20 % above the measurement value:
Measurement value 10 % of EMR (4095)
= approx. 400
Switching threshold 20 % above the measurement value = approx. 490
- In Reflex mode, teach-in is done without a background or against a dark background. This increases the reflection
due to intruding objects, the measurement value increases.
Example: Drops against a black background
- In Transmission mode, an interrupted path is used for teach-in so that even the tiniest parts are detected.
Advantage: Transmitter and receiver can be spaced farther apart.
Example: Detection of hairs (lower transmission power so the hair is not radiated on all sides)
- Detection mode dark teach-in; the measurement value should increase as the distance decreases.
5.4.3.5 OBT / OptimalBright Teach-in
The OptimalBright teach-in mode (
OBT
) is used to set the maximum possible amplifier level and simultaneously to scale
the analog value to it, for example, an object that enters the light beam (edge detection). This teach-in mode is only
available in sensors with analog output (CLS1000-AU/-AI).
- Transmission mode: Optimal setting for free light path.
- In Reflex mode, teach-in can be done on a target.
The analog output is thus also automatically scaled 0 ... 10 V or 0/4 ... 20 mA.
Measurement value 95 -100 % of EMR (4095)
= approx. 4095
Switching threshold 20 % under the measurement value
= approx. 3300
5.4.3.6 ODT / OptimalDark Teach-in
The OptimalDark teach-in mode (
ODT
) is used to set the minimum possible amplifier level and simultaneously to scale
the analog value to it. This allows for precise detection of very small movements of edges. This teach-in mode is only
available in sensors with analog output (CLS1000-AU/-AI).
- Transmitted light mode: Optimal setting for closed free light path
- Reflex mode: Use of ODT in Reflex mode is not recommended
The analog output is thus also automatically scaled 0 ... 10 V or 0/4 ... 20 mA.
Measurement value 0 ... 0.5% of EMR (4095)
= approx. 0
Switching threshold 20 % above the measurement value (4095)
= approx. 800
