Controlled Products Systems Group 6400-080 - Manual (Page 23)

6400-065-E-05-07 6400 installation guide 23
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 C: 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 before the gate reaches the full open position, the operator will stop, the
audio alarm will activate and all standard inputs are shut down (including open commands, safety
commands, loop inputs, etc.).
When the operator is in hard shutdown condition (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 button located on the top of the PC Board (see illustration above), pressing this button will reset the gate operator
to normal operation, but will not activate the gate operator. An external alarm-reset switch can be mounted provided it is installed in the line of sight of
the gate and gate operator.
Once the gate operator 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. NOTE: Before resetting a hard shutdown determine the cause, inspect for any obstructions
that could have activated the entrapment sensing system, inspect the gate and gate hardware.
hard shutdown
This occurs when the inherent or secondary entrapment protection devices are activated. In a soft shutdown condition, the operator will not respond to
any input that was present when the entrapment protection device sensed an obstruction. If the gate stops at the open position, the operator will not
respond to the automatic close timer (see examples below).
• Example A: A time clock keys the gate open in the morning and an entrapment protection device senses an obstruction prior to the gate reaching
the full open position. If the entrapment is sensed by the inherent system, the gate will reverse and run back to the closed position. The time clock
input is still present, but the gate will not re-open. NOTE: In some systems, the time clock input comes from the telephone entry system relay.
This same relay may also provide open commands for a card reader, MicroPLUS transmitters and the visitor telephone entry. If so, these
devices will also be disabled in a soft shutdown condition.
• Example B: If the gate is closing and an entrapment protection device is activated, the gate will either stop or reverse and run back to the open
position, depending if the secondary or inherent device was activated. The automatic close timer will not close the gate.
• Example C: Vehicle arrives at open loop and gate runs towards the open position. The inherent entrapment protection is activated. The gate
reverses and runs back to the closed position. If the vehicle is still present at the open loop a soft shutdown condition does not occur. The loop input
provides an immediate reset of the operator and the gate will again run to the open position.
In some conditions, a soft shutdown will reset as soon as the entrapment condition clears. For
example, if a non-contact sensor (photo cell) is sensing an obstruction, the operator will stop the gate
and assume a soft shutdown condition. When the photocell clears, the operator will return to normal
operation.
When the operator is in a soft shutdown, activation of any “intended input” will reset the operator. An
“intended input” includes any command, any standard safety input and any loop input. Activating any
of these inputs will reset the gate. At that point the gate will return to normal operation. If the gate is
open, the automatic close timer will then time out and close the gate.
soft shutdown
settings / soft-hard shutdown
4
Under various entrapment conditions the operator will
assume either a soft or hard shutdown (alarm) condition.
To determine what type of reset action is required, you will need to
understand how the different entrapment conditions affect the gate
operator.
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