Hans Turck BL20-ECO, Инструкция по эксплуатации

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2020/09
7 Guidelines for S tation P lanning
7.1 Random module arrangement
The arrangement of the I/O-modules within a BL20 station can basically be chosen at will.
Nevertheless, it can be useful with some applications to group certain modules together.
7.1.1 Complete planning
The planning of a BL20 station should be thorough to avoid faults and increase operating reliability.
If there are more than two empty slots next to one another, the communication is interrupted to all
following BL20 modules.
The system supply of a BL20 station is provided by a common, external voltage source, independent
of the number of bus refreshing modules used in the station. This prevents the occurrence of poten -
tial equalization currents within the BL20 station.
NOTE
A mixed usage of gateways of the BL20 ECO and the BL20 standard product line and I/O
modules of both product lines (base modules with tension clamp terminals) is possible
without any problems.
Abb. 1: Example of a station structure with ECO gateway (here for CANopen), Eco and standard I/O
modules
NOTE
Only base modules with tension clamp connection and ECO modules can be used next tot
the gateway.
To be able to use base modules with screw connection, a supply module (BR or PF) with
screw connection must first be configured.