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
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:
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!