LDP2TA2B115

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 Description Ordering Key Loop detectors for detection of vehicles. The vehicle loop detector is designed to handle all parking, drive-through and access control applications for controlling doors, gates, barriers or fences. Type Plug mounting Loop inputs Function Adjustment Outputs Relay versions Power supply The principle is based on a change in the inductance within the loop when a metallic object (vehicles) is passing. The microprocessor evaluates the changes. LDP1 SA1 B 230 Type Selection Mounting Relay Ordering no. Supply: 24 VAC/DC Ordering no. Supply: 115 VAC Ordering no. Supply: 230 VAC Single loop SPDT LDP1SA1BM24 LDP1SA1B115 LDP1SA1B230 Dual loop SPST LDP2TA2BM24 LDP2TA2B115 LDP2TA2B230 Specifications Rated operational voltage (UB) Pin 2 & 1 230 115 M24 Rated insulation voltage Rated impulse withstand voltage Frequency range 13 - 120 kHz Loop inductance 15 - 1500 µH Operating frequency (f) Relay output 1 HZ Response time 400 mS 195 to 265 VAC, 45 to 65 Hz 98 to 132 VAC, 45 to 65 Hz 19.2 to 28.8 VAC/DC 250’000 operations Housing material NORYL SE1, light grey Weight AC supply AC/DC supply 150 g 85 g Approvals UL508 8 sensitivity settings available CE marking Yes Relay Rating (AgNi 90/10) Resistive loads AC1 DC1 Mechanical life (typical) Electrical life (typical) Sensitivity AC1 Specifications are subject to change without notice (24.09.13) III (IEC 60664) IP 20 (IEC 60529, 60947-1) 2 (IEC 60664/60664A, 60947-1) 1 LDP Mode of Operation Application The LDP Vehicle Loop Detector is based on microprocessor technology, which has enabled a large number of functions to be implemented. The functions are primarily for use in the Parking/Access Control Industry like control for gates, barriers, fences, etc. Standard operations are implemented including programmable pulse and presence option. Principle The Vehicle Loop Detector is based on the inductive principle, using a coil of wire buried in the driveway and connected to the loop detector. The change in inductance will be measured as a change in frequency. The output relay activates when the loop is activated and releases again when the loop returns to a non-activated condition. Setup The loop has to be in a passive condition (no object in the loop area) during startup and adjustment. The loop detector will automatically calibrate when the reset button has been activated, which will be indicated by the yellow LED flashing. The functioning can now be checked by activating the loop with the actual object. Now the yellow LED will go on, and the output relay will be activated according to the dip-switch settings. If the loop detector does not react, the sensitivity must be manual adjusted by means of the dip-switches. Important: reset the system after changing the Dipswitch settings. Temperature compensation The frequency will increase as a result of decreasing temperatures and vice versa. To compensate for this, or any other situation that courses slowly change in frequency, the LD auto tunes constantly. That means if the frequency changes slowly there will be no detection. The auto tune function compensates for both increasing or decreasing in frequency. Fault detection This function is useful if the cable disconnect. The alarm will be indicated via the red LED in front of the housing. This LED is constantly lighting when the loop is open or too large and flashing when a short circuit occurs or a loop is too small. Sensitivity 8 sensitivity settings are available on the dip-switch- es in front of the module, to allow flexibility in configuration and application (Compensation for variation in loop construction). or fast moving object. Pulse output mode The relay activates only for a short period when the vehicle enters or leaves the loop. Reset switch The reset switch enables the detector to be manually reset during commissioning and testing. The detector will re-tune the sensing loop and become ready for vehicle detection. Permanent output mode The relay will remain active as long as there is a vehicle parked in the loop. Relay output The single loop detector has two SPDT relays – one for pulse output and one for presence output. The dual loop detector has two SPST relays – one for each loop. Pulse output (one shot): It is possible to select the length of the output period to 0.2s or 1 second. The pulse output can be setup to activate on detection of a vehicle or when the vehicle leaves the loop. Presence output: The output will be activated as long as there is a vehicle parked in the loop. It will be possible to activate a filter (ON-delay of 2 seconds), which prevents a false detection from a small On-delay Prevents false detections of small or fast moving objects. Loop Under Roadway Pulse length Extends the pulse length from 0.2 sec to 1 sec. Sense boost (only single channel loop detector) This feature sets the undetected level to maximum sensitivity and is used to prevent loss of detection of high-bed vehicles. Selectable frequency The frequency of the loop is determined by the inductance of the loop and the frequency switch setting. If the frequency switch is on, the frequency is reduced. It may be necessary to change the frequency to prevent cross talk between adjacent loops. The frequency function will only change the frequency of one channel of the dual loop detector. Important: Be careful when installing the detector next to another inductive load, as this can have an effect on the detector and cause false detections. Operation Diagram LDP1 / Presence and Pulse mode Power Supply Vehicle Entering Loop Vehicle Leaving Relay 1, Presence ON OFF Relay 2, Pulse ON OFF 2 tON: 2 s tP: 0.2/1.0s tP: 0.2/1.0s Specifications are subject to change without notice (24.09.13) LDP Operation Diagram (cont.) LDP2 / Direction Logic Mode Power Supply Vehicle Passing, 1 to 2 Loop 1 Vehicle Passing, 2 to 1 Relay 1, Pulse ON OFF Relay 2, Pulse ON OFF Loop 2 tON: 2 s tON: 2 s tP: 0.2/1.0s tP: 0.2/1.0s LDP2 / Presence Mode Power Supply Vehicle Passing Loop 1 Relay 1, Presence ON OFF Relay 2, Presence ON OFF Loop 2 tON: 2 s tON: 2 s LDP2 / Pulse Entering Power Supply Vehicle Entering Loop 1 Relay 1, Pulse ON OFF Relay 2, Pulse ON OFF tON: 2 s Loop 2 tP: 0.2/1.0s tON: 2 s tP: 0.2/1.0s LDP2 / Pulse Leaving Power Supply Vehicle Leaving Loop 1 Relay 1, Pulse ON OFF Relay 2, Pulse ON OFF Loop 2 tON: 2 s Specifications are subject to change without notice (24.09.13) tP: 0.2/1.0s tON: 2 s tP: 0.2/1.0s 3 LDP Dip Switch Settings Direction logic Sensitivity Minimum 1 1 2 2 3 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 Maximum 1 2 3 LDP1 1 sec 4 0.2 sec 4 Leaving 5 Pulse length 5 6 Direction A On delay Relay 1 Sensitivity boost B 8 Loop frequency “Cross talk” Relay 2 Direction LDP2 1 sec 4 0.2 sec 4 Leaving 5 5 Pulse mode 2 sec 6 Pulse 7 On delay Presence 7 A 8 Pulse length Entering Off 6 Loop 2 On 7 8 Loop 1 Pulse mode 2 sec Off 7 If a vehicle is detected, and the corresponding direction is indicated, both loops must be in a non-activated condition again before the next object can be detected. For Direction logic mode set Dipswitch 5 to “Entering” and Dipswitch 7 to “Presence”. Entering Off 6 Function The Dual loop detector (LDP2) is implemented with direction logic as standard. The function enables the detector to give a pulse output on relay#1 for a vehicle travelling from loop 1 to loop 2 and a pulse output on relay#2 for a vehicle travelling from loop 2 to loop 1. Pulse/presence mode B 8 Loop frequency “Cross talk” Important: Reset the detector after changing the Dip-switch settings Loop Diagram 4 to power cables. Loop circumference (m) >10 6-10 Twisted -> 20 turns wire per meter 20 turns per meter max length: 20 mt max lenght: 20 m No. of turns 2 3 4 ROAD 45° 300 mm m When sealing up the groove, ensure that the temperature of the sealing compound does not exceed the max temperature of the loop insulation, as this might cause an earth fault. 300 mm 1 Loop installation The loop geometry must be adapted to the respective application. The setup will be optimal if the loop has the same size as the object to be detected. After determining the loop geometry, a groove must be cut in the ground for installing the loop. Cut an inclined groove of 45° angle at the corners of the loop, which will protect it from excessive wear. Clean the groove for moisture and place the wire as tight as possible along the button of the groove. Before sealing up the groove, it is recommandable to check the loop inductance using a measuring device. Optimum value: 80-300 µH. Max Maxdepth depht into into road: road:50mm 50 mm Typical Typical30 30 mm mm 2m Specifications are subject to change without notice (24.09.13) LDP Wiring Diagram Dimension Drawing Plug version LDP1 45 Loop 1 μ Pres 6 63 5 Pulse 7 4 8 3 9 21 2 10 1 11 SUPPLY LDP2 80 Loop 2 35,5 μ 6 5 Loop 2 7 4 8 3 9 Loop 1 2 10 1 11 Loop 1 SUPPLY Pin configuration Pin n. 1 2 3 4 5 6 7 8 9 10 11 Single Channel Detector Supply Supply Pulse relay NO Pulse relay COM Presence relay NO Presence relay COM Loop Loop Earth Presence relay NC Pulse relay NC Delivery Contents Accessories • 11-pole circular socket Dual Channel Detector Supply Supply NO Loop #1 Loop #1 Loop #2 Loop #2 Pulse/Presence relay #2 NO Pulse/Presence relay #2 COM Earth Pulse/Presence relay #1 NO Pulse/Presence relay #1 COM ZPD11 Specifications are subject to change without notice (24.09.13) • Detector • Packaging: Carton box 5