ENFORCER LD-1123-PAQ Loop Detector Instruction Manual

ENFORCER LD-1123-PAQ Loop Detector

Specifications

• Operating voltage: 12~24 VAC/VDC
• Current draw: Standby: 40mA@12VDC / 40mA@24VDC, Active: 50mA@12VDC / 60mA@24VDC
• Sensitivity: High, Medium, Low
• Reaction time: 100ms
• Output relay: Pulses relay #1 or #2 on entry; selectable via DIP Switch #1
• Presence time: Permanent (default) or 5min; selectable via DIP Switch #2
• Delay time on exit: No delay (default) or 2.5s; selectable via DIP Switch #3
• Loop frequency: 20kHz or 170kHz (default); selectable via DIP Switch #4
• Loop induction range: Not specified
• Fault output: Relay #2 is continually energized and the green LED stays on
• Pulse output time: 200ms
• LEDs: Red (Power indicator), Green (Status indicator – vehicle detected or fault)
• Input/output protection: Built-in surge and transient protection
• IP Rating: IP54
• Case material: Black ABS plastic
• Operating humidity: Up to 95% without condensation
• Operating temperature: Not specified
• Dimensions: 74x36x85 mm
• Weight: 203g

Product Usage Instructions

Overview and Pin Layout Specifications:
The Loop Detector LD-1123-PAQ comes with a pin layout specification for easy installation and connection. Refer to the pin selection guide for proper connectivity.

Terminal Block and Connections:
To access the terminal screws, remove the terminal block from the loop detector. Ensure proper connections are made according to the pin layout specifications provided.

DIP Switch Settings Adjustment:
The DIP switch settings allow customization of various functionalities of the loop detector. Follow the instructions to adjust the DIP switch settings as per your requirements.

Frequently Asked Questions (FAQ):

• Q: What should I do if I need to change the loop frequency?
  A: To change the loop frequency, locate DIP Switch #4 behind the faceplate and toggle it accordingly. Setting it to ON changes the frequency to low (20kHz), while keeping it OFF maintains the default high frequency (170kHz).

• Q: How can I adjust the sensitivity of the loop detector?
  A: The sensitivity levels (High, Medium, Low) can be adjusted using the sensitivity adjustment feature located on the loop detector. Refer to the user manual for detailed instructions on adjusting sensitivity based on your requirements.

• Q: Is it necessary to use a secondary safety device when selecting the limited presence output setting?
  A: Yes, it is recommended to use a secondary safety device if selecting the limited presence output setting of 5 minutes. This ensures enhanced safety measures in case of prolonged presence detection.

Loop Detector
LD-1123-PAQ Installation Manual

The LD-1123-PAQ Loop Detector is designed to be used with gates or other vehicle detection systems. The LD-1123-PAQ is connected to an input loop which is buried in the pavement. If a vehicle is over the input loop, the detector sends a signal to perform such actions as opening a gate, holding a gate open, or indicating that a vehicle is in a bay.

• Single loop input
• 3 Adjustable sensitivity settings
• 2 Form “C” relay outputs
• 11-pin connector
• ABS plastic housing
• Power-on automatic reset
• Automatic drift compensation for varying environmental conditions
• Auto fault detection
• Terminal block included

Parts List

• 1x Loop Detector
• 1x Terminal Block
• 1x Manual

Specifications

via DIP Switch #1
Presence time|  | Permanent (default) or 5min † ; selectable via DIP Switch #2
Delay time on exit Loop frequency

Loop induction range Fault output

Pulse output time

LEDs                 Red Green

Input/output protection IP Rating

Case material Operating humidity Operating temperature Dimensions

Weight

| No delay (default) or 2.5s; selectable via DIP Switch #3 20kHz or 170kHz (default); selectable via DIP Switch #4 80~300 µH

Relay #2 ‡ is continually energized and the green LED stays on 200ms

Power indicator

Status indicator (vehicle detected or fault) Built-in surge and transient protection IP54

Black ABS plastic

Up to 95% without condensation

-40°~149° F (-40°~65° C) 215/16“x17/16“x35/16” (74x36x85 mm)

7.2-oz (203g)

*See DIP Switch Settings, pgs. 3~4.
†5min presence output setting should only be selected if a secondary safety device is in use. ‡Depending on settings, see DIP Switch Settings, pgs. 3~4.

Overview

Terminal Block and Connections
Remove the terminal block from the loop detector to access the terminal screws.

DIP Switch Settings
The DIP switch is located behind the faceplate. To remove the faceplate, insert a flathead screwdriver between the faceplate and loop detector body and twist to pop off the faceplate. The catches are located at the top and bottom of the faceplate.

DIP Switch Functions

1. Output relay: Sets the presence relay and pulse/fault relay.
a. If DIP Switch #1 is OFF (default), then relay #1 is the presence relay and relay #2 is the pulse/fault relay.
b. If DIP Switch #1 is ON, then the relay operation is swapped.  2. Presence time: Sets the presence relay energized time.
a. If DIP Switch #2 is OFF, then the presence relay will automatically de- energize 5 minutes after the vehicle presence is detected.*
b. If DIP Switch #2 is ON (default), then the presence relay will remain energized as long as a vehicle presence is detected.
3. Delay time on exit: Sets the presence relay
de-energize operation.
a. If DIP Switch #3 is OFF (default), then the presence relay will de-energize immediately upon vehicle exit.
b. If DIP Switch #3 is ON, then the presence relay will de-energize after a 2.5 second delay.

*The limited 5-minute presence output setting should only be selected if a secondary safety device is also in use.
4. Loop frequency: Sets the loop frequency. Prevents crosstalk if two loops are buried close to each other.
a. If DIP Switch #4 is OFF (default), then the loop frequency is set to high (170kHz).
b. If DIP Switch #4 is ON, then the loop frequency is set to low (20kHz).

DIP Switch Settings

frequency
ON**| Relay #1 pulse,

relay #2 presence

| Permanent presence (default)| 2.5 Second delay| Low, 20kHz
OFF| Relay #1 presence, relay #2 pulse (default)| Limited presence* (5min)| No delay (default)| High, 170kHz (default)

*The limited 5-minute presence output setting should only be selected if a secondary safety device is also in use.

Possible Relay Outputs

Status| Relay #1| Relay #2 (entry pulse)| Relay #2 (fault output)
---|---|---|---
No vehicle detected| De-energized| De-energized| De-energized
Vehicle enters loop range| Energized| 200ms pulse| De-energized
Vehicle presence in loop| Energized| De-energized| De-energized
Vehicle exits loop range| De-energized| De-energized| De-energized
Fault in loop circuit| De-energized| De-energized| Energized

†The relay operations shown are based on DIP Switch #1 being set to OFF (default). If DIP Switch #1 is set to ON, then the relay operation is swapped.

LED Indicators
The loop detector has two LEDs:

1. Red indicates power.
2. Green indicates the current status (after power-up self-test, depending on settings).
   • Detection status
   1. Off – No vehicle detected.
   2. On – Vehicle detected.
   3. Flashing slowly – Detector calibrating.
   • Fault warning
   1. Flashing quickly – Loop fault (no loop detected, loop short circuit, loop inductance exceeds permitted range).

Installation Notes

Loop and Feeder

• The induction loop and feeder cable (not included) should be insulated multi-strand copper conductor with a minimum of 1/16 sq. inch (1.5mm2) cross-sectional area (#18 AWG or larger) made of a single un-spliced length of cable from the detector, around the loops, and back to the detector.
• Loop or feeder splicing is not recommended. Make sure that the cable is long enough to also account for the twisting of the feeder. Where this is not possible, splices should be soldered and terminated in a waterproof junction box.
• The loop length will be determined by the width of the roadway to be monitored. In general, loops with a circumference in excess of 32 feet (10m) should have 3 turns of the loop cable or more. Loops with a circumference of less than 20 feet (6m) should have 4 turns.
• Use 1~2-inch sections of backer rod sized to fit snugly in the slot and placed above the cable every 1~2 feet to keep the cable at the bottom of the slot to provide for maximum protection.

Metal Reinforcement

• The existence of metal reinforcement such as steel rebar below the road surface could change the loop inductance. In such a case, add an additional two turns to the loop.
• Feeder” refers to the portion of the cable between the loop and the loop detector. The feeder wires should be twisted together at least 6 times per foot (20 times per meter).

Crosstalk
When two loops are in close proximity, the magnetic field of one may overlap and disturb the field of the other. This phenomenon, known as crosstalk, can cause false detection and detector lockup.
To eliminate crosstalk:

1. Keep a minimum spacing of 40 inches (1m) between adjacent loops.
2. Carefully screen feeder cables. If they are routed together with other electric cables, the end of the feeder cable connected to the detector must be grounded to earth.
3. Adjust the loop frequencies via DIP Switch #4 (see DIP Switch Settings, pgs. 3~4).

Detector mounting
The detector should be mounted in a protected location that is near the loop and easily accessible for troubleshooting. Ideally, a technician should be able to see the loop from the detector location. The feeder cable length should not exceed 16 feet (5m).

Sensitivity Adjustment
Three levels of sensitivity can be set by the slide switch located on the front face of the unit:

• High – High sensitivity
• Med – Medium sensitivity
• Low – Low sensitivity

Loop Installation
The inductive loop should be installed under the surface of the road. The loop should be at least 4 feet (1.2m) from the path of any gate or other large metal object to avoid interference. Cut slots in the road with a masonry cutting disc or similar device. Make a 45° crosscut 8~12 inches (20~30 cm) from the corners of the loop to reduce the chance of damage to the loop that could happen with right angle corners.

• Nominal slot width: 3/16″ (4mm), wide enough so that the loop fits easily with some gap for the sealant to fully enclose the loops.
• Nominal slot depth: 13/16″~115/16″ (30~50 mm).

Cut a slot at one corner of the loop to the roadway edge for the loop feeder cable. Clean all debris from each cut with compressed air and check for any sharp edges to avoid damage to the loop. Seal the loops using quick-set black epoxy compound or hot bitumen mastic (adhesive) to blend with the roadway surface.

NOTE WHEN TWO OR MORE INDUCTIVE LOOPS ARE MOUNTED ADJACENT TO EACH OTHER:

• When the road width is 80″ (2m), the minimum distance between loops should be 40″ (1m).
• When the road width is 160″ (4m), the minimum distance between loops should be 40″ (1m).

Road Surface

Wire Harness
The wiring harness LD-ACC-WH (not included) is also available in place of the terminal block.
The wiring harness connections are shown below.

Wiring Harness Connections

Troubleshooting

IMPORTANT: Users and installers of this product are responsible for ensuring that the installation and configuration of this product complies with all national, state, and local laws and codes. SECO-LARM will not be held responsible for the use of this product in violation of any current laws or codes.

California Proposition 65 Warning: These products may contain chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

WARRANTY: This SECO-LARM product is warranted against defects in material and workmanship while used in normal service for one (1) year from the date of sale to the original customer. SECO-LARM’s obligation is limited to the repair or replacement of any defective part if the unit is returned, transportation prepaid, to SECO-LARM. This Warranty is void if damage is caused by or attributed to acts of God, physical or electrical misuse or abuse, neglect, repair or alteration, improper or abnormal usage, or faulty installation, or if for any other reason SECO-LARM determines that such equipment is not operating properly as a result of causes other than defects in material and workmanship. The sole obligation of SECO-LARM and the purchaser’s exclusive remedy, shall be limited to the replacement or repair only, at SECO-LARM’s option. In no event shall SECO-LARM be liable for any special, collateral, incidental, or consequential personal or property damage of any kind to the purchaser or anyone else.

NOTICE: The SECO-LARM policy is one of continual development and improvement. For that reason, SECO-LARM reserves the right to change specifications without notice. SECO-LARM is also not responsible for misprints. All trademarks are the property of SECO-LARM U.S.A., Inc. or their respective owners. Copyright © 2023 SECO-LARM U.S.A., Inc. All rights reserved.

SECO-LARM ® U.S.A., Inc.
16842 Millikan Avenue, Irvine, CA 92606 Website: www.seco- larm.com Phone: 949-261-2999 | 800-662-0800 Email: sales@seco- larm.com
MI_LD-1123-PAQ_230816.docx

References

• La Armería de Madrid - fabricantes de armas y rifles
• P65Warnings.ca.gov

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