27
Teach function
10. Teach funcTion
The teach function can be used to automatically determine and read
in the end positions of the valve.
For the bus variant AS-Interface and DeviceNet, the teach
function can also be started via the bus protocol.
10.1. Starting the teach function
necessary requirements:
Before you can actuate the teach function, you must
• mount the control head on the actuator,
• connect the supply voltage,
• connect the compressed-air supply,
• AS-Interface: pilot valve OFF (D0 = 0),
• the DeviceNet must be connected to the Master (bus LED
must be lit green).
Procedure
:
→
Open the control head: turning the transparent cap
anti-clockwise.
→
The key in recess for actuating the teach function keep pressed
for approximately 5 seconds.
→
Only for control heads without pilot valve:
When yellow pilot valve LED is lit, move actuator to upper end
position.
When yellow pilot valve LED goes out again, move actuator to
lower end position.
note!
damage or malfunction due to penetration of dirt and humidity!
• To observe protection class IP65 / IP67, screw the transparent
cap in all the way.
→
Close the device (assembly tool: 674077
7)
).
Status LED: flashes yellow
when teach function is running
Key in recess for actuating the
teach function (keep pressed
for approximately 5 seconds
Pilot valve LED (yellow)
Fig. 22: Teach function
Chronological description of the teach function:
• the bottom position is read in internally
• the pilot valve switches
the actuator moves automatically to
the top position
• the top position is read in internally
• the pilot valve is turned off
the actuator moves back to the
home position.
important:
When the teach function is activated the actuator
cannot be actuated via the AS-Interface and DeviceNet
communication.
7)
The assembly tool (674077) is available from your Bürkert sales
office.
english
Type 8691
