Microsonic LCA-2 - Manual (Page 25)

Changing parameters on distance measuring sensors Page 25 of 51
C
HANGING PARAMETERS FOR ANALOGUE SENSORS
The sensors resolve distances to 0.36mm increments and output the measured distance with the same
resolution. The resolution is independent from the selected detection range and also independent from the
selected window margins.
I NNER WINDOW MARGIN / OUTER WINDOW MARGIN
The turning points of the analogue output curve are selected by the inner window margin and the outer
window margin. In between these two distances the analogue output signal runs linearly - rising or falling
ac-cording the selected output slope.
C HARACTERISTICS
By the selection buttons rising / falling the output characteristic can be toggled between rising (0 - 10 V or
4 - 20 mA) or falling (10 - 0 V or 20 - 4 mA) slope of the analogue output curve.
O UTPUT TYPE
Ultrasonic sensors with automatic changing of voltage- current output check the output load resistor and
switch autonomously to current or voltage output mode depending on the result. Checking the output load
take place every time when the device is powered up. If the load resistance is low (< 500 Ohm) the
analogue sensor go for the current output; if the load is high (> 10 kOhm) for voltage out-put.
The automatic changing of voltage- current output can be switched off and the type of the output can be
programmed as a fixed output type (voltage or current).