6HBWDOG1
Heartbeat Relay
Connect
.Monitor
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Control
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6 Heartbeat Relay Status LED’s and Buttons
LED Indicators and Manual Control Buttons:
The face of the Heartbeat Watchdog Module has two pushbuttons and
three LED status indicators. The pushbuttons are recessed to prevent accidental depresses. The location and function of
these items are defined in the diagram below:
Front Panel Indicators and Controls
Bypass Button:
Pressing this button toggles on/off the bypass
mode. When in bypass mode, the Heartbeat Monitor is disabled so
that maintenance can be performed on the system without the
watchdog input failure being detected and changing the relay state
during the maintenance period.
Reset Button:
Pressing this button causes the Heartbeat Watchdog
Module to perform a hard reset, the same as if the power had been
cycled to the module. The relay will close, followed by the normal
boot delay time, after which heartbeat input monitoring will begin.
Power Indicator:
This indicator will illuminate whenever adequate
power is supplied to the Heartbeat Watchdog Module.
Boot/Bypass Indicator:
This indicator will illuminate when the
bypass mode is active, and will also flash at a rate of 4Hz during the
boot delay period.
Failure Indicator:
This indicator will illuminate when the Heartbeat
signal has not been detected during the configured period. The
relay will open the normally closed contacts when illuminated.
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