6
Model 840/845 Contactless Smart Card Reader
Connecting the Reader
Cabling Distances
The table below gives the maximum cabling distances between the reader
and the microcontroller.
NOTES:
1.
Reader supply voltage measured at microcontroller: 13.6V is nominal
when line-powered; 12V is nominal when battery-powered.
2.
All cable distances are typical maximums.
3.
Readers powered by a local 12VDC power supply will have a maximum
cable distance of 500 feet (152m) of 24 AWG telephone wire.
4.
The reader will work well with unshielded cable in most environments.
No company can guarantee that data will be reliably transmitted for long
distances on unshielded cable in every installation. Typical Wiegand
reader installation requires eight-conductor shielded cable to provide
reader power, controller communication, door contact, exit push
button, and tamper switch status. The same functionality is provided by
Proximity Perfect readers, "supervised" with four-conductor unshielded
cable.
TABLE 1: Cable Distances
13.6 Volts (see Note 1)
18
AWG
24
AWG
12 Volts (see Note 1)
18
AWG
24
AWG
2750 ft
838m
750 ft
229m
2000 ft
610m
500 ft
152m
Содержание 840
Страница 8: ...4 Model 840 845 Contactless Smart Card Reader FIGURE 1 Model 84x Reader Gang Box Mounting ...
Страница 9: ...Model 840 845 Contactless Smart Card Reader 5 FIGURE 2 Model 84x Reader Wall Mounting ...
Страница 12: ...8 Model 840 845 Contactless Smart Card Reader FIGURE 3 Model 84x Reader J2 Connector Location ...
Страница 18: ...14 Model 840 845 Contactless Smart Card Reader FIGURE 4 Wiring Diagram Model 84x Supervised F 2F Mode ...
Страница 20: ...16 Model 840 845 Contactless Smart Card Reader FIGURE 5 Wiring Diagram Model 84x Wiegand 4001 Mode ...
Страница 22: ...18 Model 840 845 Contactless Smart Card Reader FIGURE 6 Wiring Diagram Model 84x Unsupervised F 2F Mode ...
Страница 24: ...20 Model 840 845 Contactless Smart Card Reader FIGURE 7 Wiring Diagram Model 84x Omron Magstripe Strobe Mode ...