Simons Voss Technologies SmartRelais 3 Leser Quick Manual page 29

SmartRelais 3 Leser
Normal ver-
The reader x (x=1...3) must be connected to the
sion (without
SREL3 controller via a four-wire cable. Alternatively, the reader can be
WP)
connected directly via a supply voltage. In such a case, you only need to
use a three-wire cable (A, B, -) to the controller.
Reader connection
A
B
-
EN
Reader Controller
SREL3 controller connec-
tion
A1/A2/A3
B1/B2/B3
-
Reader Controller
Alternative circuit
Signal
RS-485: Data line A
RS-485: Data line B
GND. Used to establish the
common ground reference
potential for the data lines.
Any ground connection to
the SREL3 controller.
4. Connections
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