9
Table 4 indicates maximum wiring distances per Wiegand standard with
the three most common gauges of cable.
INSTALLATION NOTES
Unless otherwise specified in this manual, please follow these guidelines:
1. Shielded cable is recommended in electrically noisy environments.
2. You can use a local power supply for the reader. If so, don’t connect the
power supply from the controller to the reader. The ground line of the
local power supply must be connected to the power supply of the
controller.
3. The unit needs to be operated with a power source with limited power
consumption according to EN 60950-1 (2003) paragraph 2.5.
Das Gerät ist mit einer Stromquelle mit begrenzter Leistung nach EN
60950-1 (2003) Absatz 2.5 zu betreiben.
4. Use of a pull-up resistor may be required by some controllers. Consult
your controller manual.
5. For tamper wiring, connect Pins 11 and 12 to a normally closed
supervised input, as shown in Figure 3.
TABLE 4. Maximum cable distance for 18, 20, or 22 AWG wire
Wire Gauge 18 AWG 20AWG 22 AWG
Cable
Distance
500 feet
(152 meters)
300 feet
(91 meters)
200 feet
(61 meters)
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