Seco-Larm Loop Detector
The LD-1123-PAQ Loop Detector is designed to be used with gates or other vehicle detection systems. The unit 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
- Weather-resistant (IP54)
- Terminal block (LD-ACC-TB) included
Specifications:
| Operating Voltage | 12~24 VAC/VDC |
| Current Draw | Standby: 40mA@12VDC / 40mA@24VDC Active: 50mA@12VDC / 60mA@24VDC |
| Sensitivity | High, Med, Low |
| Reaction time | 100ms |
| Output relay | Pulses relay #1 or #2 (default) 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 | 80~300 μH |
| 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 | -40°~149°F (-40°~65°C) |
| Dimensions | 2-15/16″x1-7/16″x3-5/16″ (74x36x85 mm) |
| Weight | 7.2-oz (203g) |
*See DIP Switch Settings, pgs. 3~4 in the manual.
†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 in the manual.
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