Burkert 8681, Operating Instructions Manual, Page: 130 / 166

130
Position Measuring System
20.1 Setting the position measuring system (Teach
procedure)
DANGER!
Danger of explosion in a potentially explosive atmosphere (only in the event of a fault as zone 2)!
`
Opening the hood or the housing in a potentially explosive atmosphere is only allowed in a not ener-
gised state!
Example for the manual Teach procedure (manual Teach function) for 3 valve
positions:
→
Open the housing following the instructions in chapter “8 Opening and Closing the Housing” .
→
Supply electrical power so that the position measuring system and the LED display can function.
→
Position the process valve at the lower switching position.
→
Depress the lower Teach button (T1) for approx. 1.5 seconds:
The LED (colour) corresponding to this position will flash quickly 3 times during the Teach procedure.
When this position has been saved, the corresponding LED will remain continuously lit until the position
of the target is changed.
→
Afterwards, position the process valve at the upper switching position to be recorded.
→
Depress the upper Teach button (T2) for approx. 1.5 seconds:
The LED (colour) corresponding to this position will flash quickly 3 times during the Teach procedure.
When this position has been saved, the corresponding LED will remain continuously lit until the position
of the target is changed.
→
The process valve can now be moved into a third, defined position.
→
Depress the middle Teach button (T3) for approx. 1.5 seconds:
The LED (colour) corresponding to this position will flash quickly 3 times during the Teach procedure.
When this position has been saved, the corresponding LED will flash continuously until the position of
the target is changed.
→
If required, return control head and system to normal status (switching position, power supply).
→
Close the housing following the instructions in chapter “8 Opening and Closing the Housing” .
If the piston rod or the target are located outside the measuring area during the Teach procedure , the
Top LED will flash 3 times in the defined fault colour.
If the piston rod or target are outside of the measuring area, no positions signals are transmitted, i.e.
the Top LED will not be lit.
The Teach buttons can be assigned to any of the positions of the piston rod or target, i.e. T1 does
not have to correspond to the lower target position, etc.
english
Control Head Type 8681