Burkert Type 8681 - Manual (Page 7)

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Cable gland with Multi-pole connection:
Internal cabling work is not required for models with multi-pole
connection. But you will require the correspondingly
assembled cable sets with the following pin assignments:
Pin Description Confi guration
1 24 V Power supply 24 V
2 GND GND
3 S1 OUT Output position 1
4 S2 OUT Output position 2
5 S3 OUT Output position 3
(Option: analog signal)
6 S4 OUT Output external initiator
7 Y1 Input solenoid valve 1
8 Y2 Input solenoid valve 2
9 Y3 Input solenoid valve 3
10-12 not used
An external initiator can be connected using the small 3-pin
terminal strip 2 (see fi gure on page 22 or manual, chapter
„Connection of an external initiator“).
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Input and output signals to the higher-level control (PLC):
Pin 9 - Y3
Pin 8 - Y2
12
Pin 6 - S4 out
Pin 7 - Y1
Pin 1 - 24 V
Pin 5 - S3 out
Pin 4 - S2 out
11
Pin 3 - S1 out Pin 2 - GND
10
(12-pole circular plug-in connector M12 x 0.75 - male,
acc. to IEC 61076-2-101 — view onto the plug pins)
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10. AS-I - DESIGN
Connection options 10.1.
left connection:
1 x M16 x 1,5 cable gland with Multi-pole connection
(M12 plug according to IEC 61076-2-101, 4-pole) on a
cable of 8 or 80 cm length
right connection:
1 x M16 x 1,5 cable gland for external initiator
Maximum Length of the Bus 10.2.
Line
The bus cable may be a maximum of 100 m long. When
designing the system, consider the length of the round cable
leading directly to the control head (see example calculation
in the operating instructions).
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Number of Connectable 10.3.
Control Heads
In AS interface versions with extended addressing range
(A/B slave), 1 master can communicate with 62 slaves.
In AS interface versions with addressing range 31 slaves a
maximum of 31 control heads can be connected to a bus line
(the address range restriction).
10.4. Electrical Data
Power supply:
Standard: via AS-i
(29,5 ... 31,6 V DC
acc. specifi cation) Option: externally
(19,2 V DC to 31,6 V DC)
Setting the valve’s power supply using jumpers on the
AS-interface electronics module.
Input / proximity switches (external initiator: S4 in):
Power supply:
AS interface voltage present at
control head - 10 %
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Type 8681