Burkert 8681 - AS Interface Electrical Data

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AS Interface - Design
Model Calculated line length (includinginternalcabling)
Multi-pole, outer cable length approx. 15 cm 0.3 m
Multi-pole, outer cable length approx. 80 cm 1.0 m
Table 1: Calculated line length of the control head versions (cable length inside and outside)
Example calculation line length:
for multi-pole connection with approx. 15 cm outer cable length :
Whenusing62controlheads,theASinterfacecableharnessmaystillbe(100m-62*0.3m)=81.4m
long.
If the calculated maximum line length of 100 m were to be exceeded, a commercially available AS interface
repeater may be used, as needed.
ObservemaximumpowersupplyviacertiedASinterfacepowersupplyunits≤8A!
FordetailsseeASinterfacespecication.
Observe the optional design "AS Interface with External Power Supply" to reduce the load on the AS
interfacebussegment!(seechapters“12.5” and “12.8”)
UsecablesaccordingtotheASinterfacespecication.
If other cables are used, the maximum cable length will change.
12.5 Electrical data
Comments / notes:
Outputs(frommasterperspective): 0to3solenoidvalves
Inputs(frommasterperspective): 3binaryfeedbacksignalsand1externalinitiator
Watchdog: If bus communication fails for more than 50 to 100 ms, the
outputs are set to 0
Setting the solenoid valves' power supply using jumpers on the AS interface electronic module:
Power supply via AS interface External power supply
(connectionseechapter“12.8”)
Jumper
Jumper
Fig. 22: Jumper settings for power supply via AS interface or for external power supply
ThecontrolheadType8681wasdevelopedaccordingtotheCompleteSpecication(V.3.0)andtheProle
S-7.A.E and S-7.F.F of the AS International Association.
english
Control Head Type 8681