At a Glance

  • System Fail-Safe
  • Loss of Control Detector
  • Multiple Dry Contact "FAIL" Outputs
  • Extremely Versatile Configurations
  • 5, 12, 15, or 24 Volt Logic
  • Industrial -40-+85 deg.C Range
  • 3-Year Limited Warranty
  • 2 Second Timeout
  • Negative Edge-triggered
  • User configures Output Contacts
  • FORM A, B, and C Relays
  • 2 FORM A 5 Amp Relays
  • User-specified Timeouts
  • Adjustable Timeouts
  • Customize It! IPD is glad to quote your specific custom module


Brentek Gx2TM Dual Watchdog Timer Modules provide exceptional fault handling versatility when implementing "Loss of Control" detection and handling protocols.  The Gx2 package has 4 connections available for outputs, so it can be configured to suit the system designer's uniuqe fault handling needs.  Example configurations include FORM 1C, 2A, 2B, or 1A/1B Dry Contact Output Relays.

Watchdog Timer Modules monitor a control system’s activity by detecting on/off transitions of a control line. During normal system operation, the watchdog’s internal timer is continually reset by control line activity and its dry-contact outputs remain energized. When control is lost (control line stops toggling), the timer times-out and de-energizes the Gx2 Watchdog Timer's output contacts, indicating “Loss of Control”. 

Loss of Control is caused by problems such as CPU latch-up, control system faults, wiring/cabling failure, unanticipated software conditions, communications problems, or power sags/spikes. The system designer can use the watchdog timer's output contact to address Loss-of-Control by energizing an alarm, shutting down the system, or providing a reset signal to the CPU/controller. The Gx2-WDT's other output line can be used to address the fault in additional ways such as switching communications, peripherals, control signals, lockouts, audio/video, indicators etc.

The Gx2TM Dual  Watchdog Timer uses the same patented timing technology to monitor control system integrity as Brentek's G-Series Watchdog Timers. Fixed timeouts are available ranging from 0.1 seconds to 60 seconds and available adjustable timeout ranges are 0.075-5 sec. and 2-8 sec. It is available in standard industrial logic voltages of 5, 12, 15, and 24 VDC:

  • Gx2-WDT5
  • Gx2-WDT12
  • Gx2-WDT15
  • Gx2-WDT24

It is easy to integrate the Gx2-WDT as a stand-alone module with Brentek’s single DIN socket (DIN-102R - not included).  Or, it can be used in combination with up to 22 additonal points of I/O with Brentek's Universal (UNI) and High-density (HDXTM) type I/O Racks.  Brentek's UNI I/O racks offer universal hole patterns that simultaneously accommodate modules from many different Industry-standard I/O systems such as G4, 0.6" Classic, M, and SM - allowing the designer to integrate the Gx2-WDT with a virtually unlimited array of I/O functionality.

How to Purchase Customize It!