Burkert Type 8681 - Manual (Page 12)

44
Terminal strip 1 Confi guration
PE Protection Earth - protective conductor
L Power supply
120 V AC live conductor
N neutral conductor
S1 OUT Ouput position 1
S2 OUT Ouput position 2
S3 OUT Ouput position 3
S4 OUT Ouput external initiator
Y1 Input solenoid valve 1
Y2 Input solenoid valve 2
Y3 Input solenoid valve 3
Terminal strip 2 Confi guration (external initiator)
L Power supply - live conductor
S4 IN Input external initiator
N Power supply - neutral conductor
Close the housing.

Ensure IP protection (dummy plugs).

An external initiator can be connected using the small
3-pin terminal strip 2 - see manual, chapter „Connection of
an external initiator“.
english 45
POSITION MEASURING 13.
SYSTEM
The recordable stroke range is between 0 and 80 mm.
Three Teach-In buttons have been provided for comparison
with the actual stroke range.
Teach-In 13.1.
Open the housing.

Supply electrical power.

Position the process valve at the lower switching

position.
Depress the lower Teach-In button (T1) for approx. 1.5

seconds (the LED corresponding to this position will
fl ash quickly three times during the teaching phase).
Once this position has been stored, the corresponding
LED will remain continuously lit until the position of the
piston is changed.
Afterwards, position the process valve at the upper

switching position to be recorded.
Depress the upper Teach-In button (T2) for approx. 1.5

seconds (the LED corresponding to this position will
fl ash quickly three times during the teaching phase).
Once this position has been stored, the corresponding
LED will remain continuously lit until the position of the
piston is changed.
english
46
The process valve can now be moved into a third,

defi ned position.
Depress the middle Teach-In button (T3) for approx.

1.5 seconds (the LED corresponding to this position
will fl ash quickly three times during the teaching
phase).
Once this position has been stored, the corresponding
LED will fl ash continuously until the position of the
piston is changed.
If necessary, return control head and system to normal

state (switching position, power supply).
Close the housing.

Teach-Reset 13.2.
Depress the Teach-In button (

T1+T2) for ca. 2.5 sec.
(optical feedback: Blinking in the fault color)
Autotune 13.3.
Autotune functions and Autotune sequences - see oper-
ating instructions.
LED - Color Assignments 13.4.
S1 - green, continuously lit,
S2 - yellow, continuously lit,
S3 - green, continuously fl ashing (250 ms/250 ms)
(Delivered state of the DIP switches: 0000)
english 47
START-UP 14.
WARNING!
Risk of injury from improper operation!
Improper operation may cause injury and damage to the
device and its environment.
Before starting-up must be ensured that the contents •
of the manual operator is known and understood.
The safety instructions and the intended use must be
•
followed.
Only adequately trained personnel should take the
•
plant / the device in operation.
Assembly of the control head type 8681.

Pneumatic and electrical installation.

S etting the position measuring system (Teach-In).

After assembly, installation and setting of the position mea-
suring system according to the operating instructions the
control head is ready for operation.
english
Type 8681