Keyscan Technical Guide (PC109x - 04.12)
133
Figure 103 – HID iClass KEYR40
Shield not connected.
Isolate with electrical
tape.
6 conductors shielded 18 AWG
Maximum - 500 ft (152.4 m)
Diagram illustrates connections
and cables for Rev A.
Note
Rev B & Rev C do not require
separate power supply. Connect
Red wire to PWR RED terminal
on ACU reader terminal.
Connect shield to ACU ground
lug. 18 or 22 AWG shielded
cable acceptable.
LED (Orange)
D1 (White)
D0 (Green)
PWR (Red)
GND (Black)
Pre-alert (Yellow)
Yellow (Beeper) used for pre-alert
otherwise isolate and tape back.
If connecting external sound device,
see Pre-Alert Relay Option or refer to
ACU cut sheet enclosed with panel
for ACU/OCB8 relay assignments.
Shield
ACU Ground
Lug
D1 (White)
D0 (Green)
Red
GND (Black)
LED (Orange)
Black
VDC + -
PWR (Red)
Reader terminal on control board
LED D1
WHT
D0
GRN
PWR
RED
GND
BLK
C1
(BEEP)
Pre-alert
(Yellow)
to separate DC
power supply
Note - If Pre-alert is connected,
the reader cannot read any
HID 125 kHz-compatible card
during the pre-alert beep.
KI-00207E-07-11
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