Wiring
Troubleshooting
Typical Wiegand Connections
IMPORTANT:
Electronic devices are susceptible to lightning and power station electrical surges from
both the AC outlet and the telephone line. It is recommended that a surge protector be installed to pro-
tect against such surges.
Note:
If powering the reader from its
own power supply, the negative lead
of the power supply must be con-
nected to the BLACK lead on both the
reader and the controller.
1.
When the reader is powered up a victory beep (4-quick beeps) is heard and the LED stays Red.
2.
Present the correct card and the reader will beep once and LED will flash on and off. It is up to the
control panel to control dual LED and have the LED turn green when an enrolled card is presented.
If reader does not recognize the card/tag (no beep, no LED flash) or reader has short read range,
please see table below for possible causes and solutions.
If any of the corrective actions mentioned above don’t work, please disconnect the reader from panel
and power it with a separate power supply or 9V battery and test card functionality. By powering it in-
dividually and off the installation most variables that can cause malfunction are eliminated. If after the
reader is powered by a separate power source the failure persist, please contact Viking Electronics
Product Support.
Possible Cause
Corrective Action
Incorrect wiring
Verify wiring connection
Not enough power
12 VDC suggested
Mounted near electromagnetic inter-
ference
Relocate or provide greater separation from
Incorrect card used
Verify card compatibility from model number
Reader/access panel not properly
grounded
Quality Earth Ground needed. Verify shield line from the ac-
cess panel to the reader is one continuous, connected line.
Supply generating electromagnetic
interference
Linear power supply recommended
