Burkert 8695 Series, Operating Instructions Manual, Page: 44 / 68

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Start-up
10.2.3 Teach-in-operation function
The teach-in-operation function can be used if the device is to carry out the end positions of the process
valve automatically during normal operation (once when the control unit is switched on for the first time).
This function may only be used for process valve actuators with control function A (normally closed).
The function must first be enabled via the büS service interface (Bürkert Communicator).
For devices that are delivered without a process valve, this function is already enabled because no other
teach function has yet been carried out.
If the function is enabled, the device reports the device status „Warning“ (out of specification) until the first
switching has been carried out properly, but it is ready for operation and outputs the end positions specified
in the last properly carried out teach function via the digital outputs of the device.
Process description:
•
Enable teach-in-operation function with the communicator.
•
Device issues “Warning” until both end positions have been successfully determined.
•
The first end position is determined when the pilot valve is deactivated for at least 5 s and no movement
is detected.
•
The second end position is determined when the pilot valve is activated for at least 5 s and no movement
has been detected.
•
Both end positions are saved and the „Warning“ device status is withdrawn.
•
The enabling of this function is reset.
Note: the enabling of this function is also reset if one of the other two teach functions (automatic or manual
teach function) was carried out before the first switching.
english
Type 8695 REV.3