Weidmuller SAI Active Universal Pro Series, Руководство пользователя

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Project Planning with the Universal Pro
3.1 Project planning
Planning the bus system
The following steps must be taken into consideration
when designing an installation:
1 Location of the machine or facility
2 Assignment of the signals to the installation to a
logical group
3 Selection of the field devices
4 Assignment of the signals to the field devices
5 Determination of where the field devices are to
be installed
Criteria for determining the correct SAI distributor:
Size of the connectors Determine the size of the connectors to suit you application, the de-
sign of the sensors or according to your personal preferences.
Weidmueller offers both M12 and M8 variants for purely digital sig-
nals.
Number of poles of the I/O connec-
tions Please consider the sensor/actuator cable to be connected; possi-
ble options are 3 or 5 poles.
T-piece Specifically for 5-pole M12 sensor connections, you can feed two
cables to a distributor input by means of a Y-piece.
Inputs / outputs Weidmueller has a variety of SAI distributors on offer such as a
variant with 16 digital inputs, with mixed digital inputs/outputs as
well as an analogue/digital version (for more information please re-
fer to Chapter 4: (Connecting SAIs).
Shielding Shielding by means of metal connectors is necessary for bus con-
nections. We recommend the same approach for analogue signals
to restrict the susceptibility to interference.
Signals Please consider if you wish to transmit analogue or digital signals.
Table 1 Determining the correct SAI distributor
You can find more information about determining the correct selection of products in Appendix A:
Product Overview.
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