DSP-50 User Manual
Page 15 of 27
DSP50_MAN_A
disconnected from its terminal screw. If placed in the fail-secure position, Output A does not activate when a
fault condition is identified.
DIP
Switch 3
Failure Mode for Output A
OFF
Fail-Safe
ON
Fail-Secure
Factory Default
When a fault is identified the green Power LED will flash to indicate the type of fault that was found. See
Indicators – Power LED for more information on this display.
Delay / Extension (DIP Switches 1 and 2)
Delay is the time added after a vehicle arrives in the detection area before Output A is activated. During the
delay interval Output A will remain de-activated, requiring that the vehicle stay in the detection area for a full 2
seconds before activating Output A. This is useful at sites where vehicles traveling perpendicular to the gate
may travel across the detection zone. This interval is indicated by the red Detect A LED blinking slowly at 200
milliseconds on followed by 200 milliseconds off repeatedly until the interval is complete. The only delay setting
available is 2 seconds.
Extension is the time added after a vehicle leaves the detection area. During this interval, Output A will remain
activated, with the intent of allowing the vehicle to fully exit the detection area before the gate begins to close.
If another vehicle arrives during this extension interval, the remainder of the extension time is canceled and the
detector returns to the normal presence state. This interval is indicated by the red Detect A LED blinking fast at
50 milliseconds on followed by 50 milliseconds off repeated until the interval is complete. There are two
extension intervals to choose from, 2 seconds and 5 seconds.
When the detector is operating in the magnetometer mode the extension setting can be used to lengthen the
output pulse on Output B. If no extension is selected the output pulse will be 250 milliseconds long. Otherwise,
the output pulse length is equal to the extension time setting.
Delay and extension cannot be selected at the same time. The possible delay and extension settings are
summarized in the table below:
DIP Switch
Output A
Delay Time
Output A
Extension Time
1
2
OFF
OFF
None
None
OFF
ON
2 seconds
None
ON
OFF
None
2 seconds
ON
ON
None
5 seconds
Factory Default
