Controlled Products Systems Group MVPDTEK - Manual (Page 5)

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.
Note: If DIP 7 and DIP 8 are set to ON position the presence output will be extended 9 seconds after
the vehicle left the loop.