Overview: Detector operates on any voltage from 10 to 30 volts AC or DC and draws about 35 milliamps of current with no vehicle on the loop. This micro-sized detector will automatically adjust its sensitivity level when used on different sized loops. The detector loop inductance should be between 20 and 2000 microhenries.
LED Indicators: The green Power LED blinks once per second to indicate the detector is operating and powered. The red Detect LED will turn on when a vehicle is over the loop detection area.
Loop or Wire Failures: In the case of a loop circuit failure, the green LED flashes slowly (twice per second) for an open loop circuit failure. The green LED will flash fast (10 times per second) to indicate a shorted loop circuit.
Fail Safe vs Fail Secure: A fail safe detector will output “detect” when the loop circuit is failed. This is always useful on a safety loop. On the free exit loop this will keep the gate open until the situation is fixed. This is useful in applications where it is important to allow traffic flow to continue. A fail secure detector will never output “detect” when the loop circuit is failed. This will keep the gate closed. This is useful in high-security areas or installations where containment is needed. The DSP-11 is a fail safe detector. Note: Never use a fail secure detector on a safety loop.
Output Relay Ratings: 1A at 125 VAC general use, 1A at 30 VDC
Power: DSP-11-LV (10 to 30 volts AC or DC), DSP-11-117 (117 volts AC), DSP-11-230 (230 volts AC)
Operating Temperature: -35° F to 165° F (-37° C to 74° C)
Size: Height: 1.4″ Width: 1.4″ Depth: 2.75″ overall
Connector: Standard 11-pin (Amphenol 86CP11)
Pin assignments are:
Pin 1 (black wire) – Power in (See model type)
Pin 2 (white wire) – Power in (See model type)
Pin 5 (yellow wire) – Output relay common
Pin 6 (blue wire) – Output relay N.O. – (closes for detect)
Pin 7 (gray twisted wire) – Loop input
Pin 8 (brown twisted wire) – Loop input
Pin 10 (pink wire*) – Output relay N.C. – (opens for detect)
*This wire is black (with white) on some harnesses.