Johnson Controls tyco iSTAR Ultra, Installation And Configuration Manual

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Access Control Module
iSTAR Ultra Installation and Configuration Guide 5–9
Wiegand Connections
J16, J25, J31, J78, J79, J80, J22, J28
Direct Wiegand signaling read head connections are shown in Figure 5-7 on page 5-9 .
Figure 5-7: Wiegand Readers
The data line maximum lengths are:

18 AWG - 500 feet

20 AWG - 300 feet

22 or 24 AWG - 200 feet
Table 5-1 on page 5-9 describes the pinouts.
Table 5-1: Wiegand Port Pinouts
Wiegand Port
Pin Number
Signal/Function
1 Power +12 Vdc
2 GND - PWR Return
3 Data 0 - Wiegand Input
4 Data 1 - Wiegand Input
5 Red LED - active low
6 Yellow LED - active low
7 Green LED -active low
8 Beeper - active low