Inductive Sensors Single or Dual Loop Detectors Type LD with teach-in Single or Dual loop detector Automatically adjustment of detection level Manual sensitivity for compensations of variations Easy installation via 11 pin circular plug Rated operational voltage: 24 VAC/DC, 115 VAC or 230 VAC Pulse or presence relay output Output 1A/250 VAC SPDT relay LED indication for power, relay status and loop fault Sensitivity boost only LDP1 Selectable frequency prevents cross-talk Direction logic only LDP2 Product Des crip tion Ordering Key LDP1 SA1B 230 Loop detectors for detection The principle is based on a Type of vehicles. The vehicle loop change in the inductance Plug mounting detector is designed to handle within the loop when a metal- Loop inputs all parking, drive-through and lic object (vehicles) is passing. Function access control applications for The microprocessor evaluates Adjustment controlling doors, gates, barri- the changes. Outputs ers or fences. Relay versions Power supply Type Selection Mounting Relay Ordering no. Ordering no. Ordering no. Supply: 24 VAC/DC Supply: 115 VAC Supply: 230 VAC Single loop SPDT LDP1SA1BM24 LDP1SA1B115 LDP1SA1B230 Dual loop SPST LDP2TA2BM24 LDP2TA2B115 LDP2TA2B230 Specifications Rated operational voltage (U ) Frequency range 13 - 120 kHz B Pin 2 & 1 230 195 to 265 VAC, 45 to 65 Hz Loop inductance 15 - 1500 H 115 98 to 132 VAC, 45 to 65 Hz Operating frequency (f) M24 19.2 to 28.8 VAC/DC Relay output 1 HZ Rated insulation voltage <2.0 kVAC (rms) Response time 400 mS Rated impulse withstand voltage 4 kV (1.2/50 s) (line/neutral) Environment Rated operational power Overvoltage category III (IEC 60664) AC supply 3 VA Degree of protection IP 20 (IEC 60529, 60947-1) AC/DC supply 1.5 VA / 1.5 W Pollution degree 2 (IEC 60664/60664A, Power on delay (t ) < 10 sec Typ. 4 sec V 60947-1) Outputs Temperature Minimum switching current 10 mA 12 V Operating -40 to +70C (-40 to + 158F) Rated insulation voltage 250 VAC (rms) (cont./elec.) Storage -50 to +85C (-58 to +185F) Relay Rating (AgNi 90/10) (micro gap) Housing material NORYL SE1, light grey Resistive loads AC1 1 A / 250 VAC (250 VA) Weight DC1 1 A / 30 VDC (30 W) AC supply 150 g 6 Mechanical life (typical) 15 x 10 operations AC/DC supply 85 g 18000 imp/h Approvals UL508 Electrical life (typical) AC1 > 250000 operations CE marking Yes Sensitivity 8 sensitivity settings available Specifications are subject to change without notice (24.09.13) 1LDP Mode of Operation Application If the loop detector does not es in front of the module, to or fast moving object. The LDP Vehicle Loop react, the sensitivity must be allow flexibility in configura- Pulse output mode Detector is based on micro- manual adjusted by means tion and application (Com- The relay activates only for a processor technology, which of the dip-switches. pensation for variation in short period when the vehi- has enabled a large number Important: reset the system loop construction). cle enters or leaves the loop. of functions to be imple- after changing the Dip- mented. The functions are switch settings. Reset switch Permanent output mode primarily for use in the Park- The reset switch enables the The relay will remain active ing/Access Control Industry Temperature compensation detector to be manually as long as there is a vehicle like control for gates, barri- The frequency will increase reset during commissioning parked in the loop. ers, fences, etc. as a result of decreasing and testing. The detector Standard operations are temperatures and vice ver- will re-tune the sensing loop Pulse length implemented including pro- sa. To compensate for this, and become ready for vehi- Extends the pulse length grammable pulse and pres- or any other situation that cle detection. from 0.2 sec to 1 sec. ence option. courses slowly change in frequency, the LD auto tunes Relay output On-delay Principle constantly. That means if the The single loop detector has Prevents false detections of The Vehicle Loop Detector is frequency changes slowly two SPDT relays one for small or fast moving objects. based on the inductive princi- there will be no detection. pulse output and one for ple, using a coil of wire buried The auto tune function com- presence output. Sense boost (only single in the driveway and connect- pensates for both increasing The dual loop detector has channel loop detector) ed to the loop detector. or decreasing in frequency. two SPST relays one for This feature sets the unde- The change in inductance each loop. tected level to maximum will be measured as a Fault detection Pulse output (one shot): It is sensitivity and is used to change in frequency. This function is useful if the possible to select the length of prevent loss of detection of The output relay activates cable disconnect. the output period to 0.2s or 1 high-bed vehicles. when the loop is activated The alarm will be indicated via second. The pulse output can and releases again when the the red LED in front of the be setup to activate on detec- Selectable frequency loop returns to a non-acti- housing. This LED is constant- tion of a vehicle or when the The frequency of the loop is vated condition. ly lighting when the loop is vehicle leaves the loop. determined by the induc- open or too large and flashing Presence output: The output tance of the loop and the Setup when a short circuit occurs or will be activated as long as frequency switch setting. If The loop has to be in a pas- a loop is too small. there is a vehicle parked in the frequency switch is on, sive condition (no object in the loop. It will be possible to the frequency is reduced. It the loop area) during start- Sensitivity activate a filter (ON-delay of may be necessary to change up and adjustment. 8 sensitivity settings are 2 seconds), which prevents a the frequency to prevent The loop detector will auto- available on the dip-switch- false detection from a small cross talk between adjacent matically calibrate when the loops. reset button has been acti- The frequency function will vated, which will be indicat- only change the frequency ed by the yellow LED flash- of one channel of the dual ing. loop detector. The functioning can now be Important: Be careful when checked by activating the installing the detector next loop with the actual object. to another inductive load, as Now the yellow LED will go this can have an effect on Loop Under on, and the output relay will the detector and cause false be activated according to Roadway detections. the dip-switch settings. Operation Diagram LDP1 / Presence and Pulse mode Power Supply Vehicle Entering Loop Vehicle Leaving t : 2 s ON ON Relay 1, Presence OFF t : 0.2/1.0s t : 0.2/1.0s P P ON Relay 2, Pulse OFF 2 Specifications are subject to change without notice (24.09.13)