4.2 Hard Shutdown
A hard shutdown condition occurs when the inherent entrapment protection system has sensed two
consecutive obstructions before the gate reaches the full open or closed position.
• Example: The gate is closing and the inherent entrapment protection system senses an
obstruction and causes the gate to reverse direction. As the gate begins to run in the open
direction, a second obstruction is sensed prior to the gate reaching the full open position.
Once the second obstruction has been sensed, the operator will stop, the audio alarm will be
activated and all standard inputs are shut down (including open commands, safety
commands, loop inputs, etc.).
• NOTE: The audio alarm will remain activated for a maximum of five minutes, or until the
operator receives a reset input. The hard shutdown condition will remain in affect even if the
audio alarm shuts off after five minutes.
• After 5 minutes, the audio alarm will “chirp” every 5 seconds. This indicates that the operator
is in a hard shutdown condition and the reset switch must be activated to reset the operator
and silence the alarm.
When the operator is in a hard shutdown condition (audio alarm activated or audio alarm “chirps”
every 5 seconds), the only way to reset the gate operator and return it to normal operation is to
activate the reset input (terminals 17 and 18). An alarm-reset switch can be mounted external of
the gate operator provided that it is installed in the line of sight of the gate and gate operator.
• Before resetting a hard shutdown, determine why the shutdown occurred. Inspect the gate
for any obstructions along its path that could have activated the inherent entrapment sensing
system. Inspect the gate and gate hardware.
• NOTE: Models 6001 and 6002 operators have a built-in reset push button located on the
bottom of the control box. Activating this button will return the gate operator to normal
operation, but will not activate the gate operator.
Once the gate has been reset, an open or close command is needed to start the gate operator. Most
activating commands will cause the gate operator to cycle to the open position. This includes
activation of a key switch or open command and activation of an open loop. Activation of a close
command will run the gate to the closed position.
ALARM
Push to Reset
Page 34
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