As-Interface Installation; As-Interface Connection; Maximum Length Of The Bus Line; Technical Data For As-Interface Pcbs - Burkert TopControl Basic 8694 Manuel D'utilisation

Type 8694
AS-Interfaceinstallation
11 AS-INTERFACE INSTALLATION
11.1 AS-Interface connection
AS-Interface (Actuator Sensor Interface) is a field bus system which is used primarily for networking binary sensors
and actuators (slaves) with a higher-level control (master).
Bus line
Unshielded two-wire line (AS-Interface line as AS-Interface flat cable) along which both information (data) and
energy (power supply for the actuators and sensors) are transmitted.
Network topology
Freely selectable within wide limits, i.e. star, tree and line networks are possible. Further details are described in the
AS-Interface specification (A/B slave model conforms to the version 3.0 specification).
11.2 Maximum length of the bus line
The bus line may have a maximum length of 100 m. During the design phase, consider all AS-Interface lines in an
AS-Interface section, i.e. even the stub lines to the individual slaves.
The development stage which is actually possible depends on the sum of all the individual operating currents per
positioner which are supplied on a common AS-Interface bus segment via the bus.
• Observe the maximum power supply ≤ 8 A via certified AS-Interface power supply units. Details see
AS-Interface specification.
• Note the optional model "AS-Interface with external power supply" to relieve the AS-Interface bus
segment (see "11.7.2").
• Use cables according to the AS-Interface specification. If other cables are used, the maximum bus line
length will change.
11.3 Technical data for AS-Interface PCBs
Version Profile S-7.3.4
Supply via AS-Interface
Outputs 16 bit set-point value
Inputs -
Certification Certificate no. 87301 after version 3.0
Table 21: Technical data
Version Profile S-7.A.5
via AS-Interface
16 bit set-point value
16 bit feedback
Certificate no. xxxxx after version 3.0
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