DHI-HY-1431R-Front DHI-HY-1431R-Left 45° DHI-HY-1431R-Right 45° DHI-HY-1431R-size DHI-HY-1431R-certification

Looped Bus Isolator Module

The loop circuit connects the detectors, manual call points, sounderstrobes, modules, and fire alarm control panel in a loop through thebus. This design enables the FACP to receive information from otherdevices, facilitating two-way transmission of signals and providing anadditional transmission path for the system circuit. If an open circuitfault occurs, the entire circuit will not be affected. If a short circuitoccurs, the isolator modules on both sides of the short-circuited areaoperate, without disrupting the normal operation of the entire system.

DHI-HY-1431R Looped Bus Isolator Module is indispensable to loopcircuit. Characterized by two-wire technology, this module protectsthe bus communication circuit.

SKU:

DHI-HY-1431R

Certification:

CE, CPR, UKCA

Brand:

Description

Feature

  • Compact Solution: With the assistance of a loop bus switch module and wiring, this system can transition from a radial to a loop circuit without replacing control panel
  • Convenient wiring: Polarity-free with automatic identification
  • Simple configuration: Shares the same configuration logic as theradial circuit without any special requirements

Technical Information

Parameter Introduction
Electrical
Working Voltage DC16V~ DC28V
Current
  • Monitoring current: ≤ 50μA
  • Operating current: ≤ 45mA
Indicator Isolate: Yellow LED is constantly off when works normally and remains lit when short circuit occurs
Communication Wiring
Wiring Two-wire
Communication Distance ≤ 1500 m
Environment
Operating Temperature –10℃ to +55℃ (+14℉ to +131℉)
Storage Temperature –20℃ to +65℃ (–4℉ to +149℉)
Operating Humidity ≤ 95% RH (no condensation)
Construction
Color White
Dimensions (with base) 90 mm × 90 mm × 37 mm (3.54″ × 3.54″ × 1.46″)
Weight (with base) 136.1g (0.3lb)

 

FAQ 

Problem Solutions
Output terminal is short-circuited, the isolate indicator does not light up
  • Replace device.
  • Check the circuit length.
  • Contact the supplier for advice.

 

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