11
d)
Wiegand interface
The Wiegand interface of the access system can be used in 2 different ways:
1) The access system works as an external card reader
The access system can be connected to a suitable
Wiegand controller and serves as an external card
reader. The transponder data are transmitted via a 26-bit
protocol – the Wiegand controller must, therefore, sup-
port this.
Follow the operating instructions for your
Wiegand controller.
1 Access system
2 Wiegand controller
3 Power adapter
The access system works with an operating voltage of 12 - 18 V/DC. If the Wiegand controller does not
provide this, you will need a separate power adapter for the access system. In that case, the wiring will be
different to that shown in the figure.
2) An external card reader is connected to the access system
The access system itself functions as a Wiegand controller and allows for operation of an external card reader (with
26-bit or 34-bit protocol, automatic detection).
Card readers for 125 kHz transponders as well as card readers with MIFARE
®
chip card technology
(13.561 MHz) are permitted.
If a MIFARE
®
chip card reader is connected, it must be used to teach in new transponders.
When connecting a card reader for 125 kHz transponders, the teach-in process can be carried out both via
the access system and via the card reader (if problems occur here, use only the external card reader for
teach-in).
Ensure that the two data lines D0 and D1 are not swapped – D0 must always be connected to D0 and D1 to D1. The
remaining wiring can be carried out as outlined in 7. b). Always observe the operating instructions for the external
card reader.
1
2
3
Содержание 2380479
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