DSI ES8900, Installation And Operation Manual

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DESIGNED SECURITY INC
800-272-3555 www.dsigo.com
1402 Hawthorne Street Bastrop, Texas 78602 Fax 512 321 9181 Email: dsi@dsigo.com
INS-8900-151110
TROUBLESHOOTING TIPS
The following are a few of the most common questions the Customer Support group answers.
Symptom:
Circuit Breaker Trips
Solution:
This is an indication that the current through the circuit breaker is high, usually due to the Supply
Voltage being low (less than 24 VDC) as a result of using too small a gauge of wire for Power.
Check for loose connections and verify the proper gauge wire is installed. If necessary, replace
the power wire with a larger gauge (smaller number) or increase the Supply Voltage in order to
deliver 24 VDC at the Power Input Connector, while the optical turnstile is operating under load.
Symptom:
Numerous False Alarms
These Alarms may occur spontaneously, or after passage of a valid user (even in Free Exit
mode).
Solution:
The optical path has become partially obstructed by dust accumulation, or by application of
cleaners/polish/etc. on the Infrared Clear Acrylic covers over the sensors and receivers. Clean
the Sensors, the I.R. Clear Acrylic with a mild soap and water solution. Instruct the Cleaning
Staff to avoid using any cleaners or polish on sensor Clear Acrylic. When handling sensor Clear
Acrylic, hold it by the edges to avoid getting oils and fingerprints on the surface which would
distort the beam and may attract dust. (See Care and Cleaning info in Appendix)
Symptom: Multiple users card in, only first user allowed to pass.
Solution:
The Access Control System is holding the Valid User (Entry or Exit) Input for subsequent users.
The Access Control System needs to be adjusted to provide a shorter cycle time (preferably less
than one second contact closure) in order to provide a unique input cycle to the OPTICAL
TURNSTILE for each valid card read. Because many Access Control Systems are built to
control door locks, their default setting is five seconds, and the system simply holds the lock for
each subsequent user rather than providing a unique input cycle (Open/Close/Open) for each
valid user.