Controlled Products Systems Group DTEK110VAC - Manual (Page 3)

Warning: Do not use limited presence setting and / or "Fail Secure" setting for reversing gates, doors or
barriers.
DIP - Detector Functions
1. Presence function is provided always by the presence relay output on pins 5, 6, and 10.
These outputs are active when the detector detects a car. If there is a need for an
additional presence output the Relay 2 can be configured as a second presence output by
setting DIP 1 to ON position.
2. Pulse function is provided by the Relay 2 output on pins 3, 9, and 11. To obtain pulse on
Relay 2 set DIP 1 to OFF position. The pulse of about 0.5 second can be generated when
the car enters the loop or when it exits. To generate pulse on vehicle entry to the loop set
DIP 2 to OFF position. To generate pulse on vehicle exit from the loop set DIP 2 to ON
position.
3. The presence relay provides constant output as long as the car is detected on the loop. To
obtain constant presence time set DIP 3 to OFF position. In some applications limited
presence time is required. To obtain limited presence time of approximately 4 minutes set
DIP 3 to ON position. Be aware that the detector relay will be released after 4 minutes
even if the vehicle is still detected by the detector. This may by a serious hazard in
applications where gates, doors or barriers are reversed, therefore never use this option in
these applications.
4. When DIP 4 is set to ON position the detector works in "Fail Safe" mode of operation the
detector will issue a detect signal when a car is detected, loop is disconnected or shorted,
or when the power to the detector is interrupted. It is strongly recommended to use the
detector in this mode.
In some application there is a need to ignore the loop or power failures and only to
provide the detect signal when a car is detected on the loop. To ignore loop or power
failures set the detector to "Fail Secure" by setting DIP 4 to OFF position. Do not use this
setting for application where gates, doors or barriers have to be reversed.
Note: Functions on pins 6 and 10 are reversed if DIP 4 is set to OFF
5. In some applications it is necessary to filter out short detections such as cross traffic or
short burst of radio frequency such as keying of a CB transmitter. To ignore these short
detections set DIP 5 to ON position. This will cause any detection that is shorter than 2
seconds to be ignored.
6. To increase detection height when detecting high bed vehicles set DIP 6 to ON position.
This setting will cause the sensitivity to automatically increase once the front axle of the
truck is detected. The sensitivity will go back to the normal level once the truck left the
loop.
7. To extend the presence output for 6 seconds after the vehicle left the loop set DIP 7 to
ON position.
8. To extend the presence output for 3 seconds after the vehicle left the loop set DIP 8 to
ON position.
DTEK.lwp Created: March 23, 1998 Revised: January 16, 2003 10:44AM Pages:5 Page:3