Connections - Simons Voss Technologies SmartRelais 3 LED Reader Guide Abrégé

4. Connections

4 Connections
NOTE
Connecting before initial programming
LSM only recognizes readers if they are connected before the initial pro-
gramming.
1. Connect readers before the initally programming the controller.
2. For connecting further readers: Reset the controller, connect the
Fault through electromagnetic fields
Signals on the connection cable between reader and controller are influenced externally
by electromagnetic fields. A shielded cable reduces the influence of disruptive signals
from outside.
Use a shielded cable.
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Ground loop through shielding
Physically separated devices can have a slightly different earth potential. A screen con-
nected on both sides represents a second earth connection through which this potential
difference is balanced. The current arising from this can disrupt the data transfer.
Only connect the screen on one side to the common ground potential (either on the
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controller or the reader - for reasons of space, connection to the controller is recom-
mended).
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readers and redo the inital programming.
SmartRelais 3 LED Reader
EN