Presence Detector Loop Controller (PDLC)
OVERVIEW
Designed for freight and transit rail applications, the QuEST Presence Detector Loop Controller (PDLC) offers a digital version of the classic PD2500 Presence Detector. With remote alarm and analytics via RS422, railroads are able to monitor track circuit performance allowing issues—such as poor loop or track conditions—to be corrected before operations suffer.
The PDLC is a better choice when any of the following are needed:
- Large scale yard automation
- Trending of operating parameters
- Small footprint
- Ease of Installation
- Lower ongoing maintenance cost
- Remote connectivity
FEATURES
- Input battery voltage range: 10–32 VDC
- One isolated loop interface
- One isolated RS-422 communications link
- One normally open occupancy relay contact
- One normally closed GPIO relay contact
- Drift compensation
Presence Detector Loop Controller (PDLC)