UPASS ACCESS | INSTALLATION GUIDE
Connections
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3
CONNECTIONS
The uPASS Access is supplied with a 5 meter (15 feet) shielded cable pigtail with 12
multi-color wires.
RED
Power supply 12 - 24VDC.
BLACK
Power supply 0VDC, DC-Ground.
BROWN RS485 A-
GREEN
RS485 A+
GRAY
Data-0 / Clock
PINK
Data-1 / Data
YELLOW Tamper switch (normally closed)
GRY/PNK Tamper switch (common)
RED/BLU Led_UL_IN*
WHITE
Led_NA_IN*
PURPLE
Nedap antenna interface. RFMOD antenna modulation. Connect to
ANT.
BLUE
Beeper_IN*
SHIELD
Shield
3.1
POWER SUPPLY
The uPASS Access requires DC power supply in the range from 12 – 24V.
Maximum current consumption is 1A @ 12VDC, 0.5A @ 24VDC.
Connections:
RED
Power supply 12 - 24VDC.
BLACK
Power supply 0V / DC-ground.
SHIELD
Shield connected to DC-ground .
3.2
COMMUNICATION
3.2.1
RS485
The uPASS Access reader has a RS485 interface for communication with a host
system or for configuring reader settings. The RS485 interface is a 2-wire half-
duplex serial communication interface using balanced lines.
Connections:
BROWN RS485 A-
Balanced RX/TX
GREEN
RS485 A+
Balanced RX/TR
SHIELD
Shield connected to DC-ground.
3.2.2
USB
The uPASS Access reader features an USB interface for service, installation and
firmware upgrade purposes. The Mini-USB connector is located on the bottom of the
device and can only be reached when the bottom screw is opened and the uPASS
Access is lifted away from the base-plate. This ensures that unauthorized
modifications to the reader settings can be detected using the tamper switch.
The USB interface can be used to configure the reader using the UHFTOOL software.
Note
Cable shield shall be
connected to the metal
case of the external
device(s). Cable extensions
shall only be made by
means of shielded cable(s).
All shields of the shielded
cable extensions shall be
connected together and to
the metal case of the
external device(s).
Led_UL_IN, Led_NA_IN and
Beeper_IN are inputs that
are active LOW.
Note:
Extending this connection
beyond the 5 meter pig tail
length shall ONLY be
allowed using shielded
cable.
The minimum voltage at the
end of the fixed shieled
pigtail cable shall be
greater then 12VDC -10%
The shield shall be
connected to the metal
case of the external device.
Note:
The RS485 interface is
disabled while the USB
interface is in use!
Extending this connection
beyond the 5 meter pig tail
length shall ONLY be
allowed using shielded
twisted pair cable(2 x 2 x
0.25 mm2) as long as the
total length is shorter then
1200 meters, 6000 feet,
cable capacity < 100
pF/meter.
The second twisted pair
shall be used for the DC
power supply.
The shield shall be
connected to the metal
case of the external device.
Note
While the shielded USB
cable is connected, the
RS485 interface is disabled!
The maximum shielded
cable length shall be < 2
meter.
Note
Extending these
connections beyond the 5
meter pig tail length shall
ONLY be allowed using
shielded cable (4 x 0.25
mm2) as long as the total
length is shorter than 1200
meters (4000 feet).
The shield shall be
connected to the metal
case of the external device.
