Operating Instructions
8
5. Commissioning
All operating controls required for calibration can be
found in the receiver.
P1:
Setting the threshold level
through sensitivity.
P2:
Setting the delay of the switch-off signal.
S1:
Relay active / passive
S2:
Doubling the sensitivity
LED 1:
shows the switching status of the relay.
•
LED on = relay is closed
LED 2:
shows the signal strength through flashing.
•
fast flashing = high signal strength
•
slow flashing = low signal strength
•
LED off = no reception signal
Set shift pattern with potentiometer P1
The threshold level at which the relay is to be switched is set with potentiometer P1.
The microwave barrier is set so that there are definite differentiations between an interrupted and
a muted / non-interrupted microwave beam.
Procedure
: In case of a non-interrupted beam and
flashing LED 2
, rotate P1 clockwise until the relay
switches and LED 1 glows at the same time. Now interrupt the beam (place material to be detected between
transmitter and receiver) and only rotate P1 counter-clockwise until LED 1 is turned off. Repeat the process.
If LED 1 continues to glow even if P1 is turned all the way to the left, and if the materials are materials with
a low dielectric coefficient and weak attenuation (e. g. paper, plastic, foams), then please contact
SWR engineering Messtechnik GmbH.
If LED 2 doesn’t flash, then set switch S2 to position 2, so that the sensitivity is doubled. If the LED itself
does not flash even in this sensitive position, then the receiver is not receiving a signal from the transmitter.
In this case, please check the microwave barrier for functionality with regard to the following:
•
Wrong alignment between the barriers
•
Distance between receiver and transmitter too great
•
Too much attenuating material in the beam
•
Attenuating crust built up on the sensors
Set switch delay time with potentiometer P2
Finally, set the switch-on /switch-off time with potentiometer P2 according to its requirements in a
range from 0.25 to 5 seconds. A counter-clockwise rotation increases the delay. This can prevent a
flutter in the switch relay caused by a critical sensitivity setting.
Fig. 8: Position of operating controls
LED 2
S1
S2
LED 1
P1
P2
