UM EN FLX ASI SYS PRO INST - Onlinecomponents.com

UM EN FLX ASI SYS PRO INST
Please note that the sensors connected to the AS-i devices are supplied via the power
supply unit. The connected actuators are operated separately via the black AS-i cable.
Example Calculation:
AS-i system with 25 slaves and 100 sensors.
The actuators are supplied via a 24 V auxiliary voltage.
AS-i master 200 mA 200 mA
AS-i slaves 25 x 40 mA 1000 mA
Sensors 100 x 10 mA 1000 mA
Total
2200 mA
In this example, a total of 2.1 A is required in the AS-i system. Here it is sufficient to use an
AS-i power supply unit with a maximum output current of 2.4 A,
e.g., ASI QUINT 100-240/2.4 A EFD.
5.4 Selecting the Cable
A typical, profiled flat-ribbon cable made from rubber is used consistently throughout the
AS-i system. This offers the advantage of a quick and easy connection method. In the event
that the cable must meet special requirements in terms of resistance to oil or
UV light, versions are also available that are made from resistant materials such as PUR.
For additional information, please refer to "Flat-Ribbon Cable" on page 4-7.
5.5 Speed of Data Exchange
At maximum configuration, the AS-i system has a very fast cycle time of 10 ms. If even faster
response times are required, reducing the number of slaves results in a proportional
decrease in the cycle time. A system with just six slaves can thus be updated in 1 ms.
If only part of the data needs to be updated faster, there is the option of configuring some of
the slaves without extended addressing. This reduces the number of possible slaves in the
AS-i system. The devices operated as single slaves are updated twice as fast,
i.e., in a maximum of 5 ms. Both methods can also be combined.
When using AS Interface slaves according to specification 3.0 (e.g, Profile 7.A.7), please
note that the cycle time is above the previously mentioned 10 ms for these "combined
transactions". The exact cycle time depends on the selected slave type/profile.
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