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Allen Bradley 1756-A7 new with sealed lable 1756A7
Upon a loss of the Extr/Adm input signal during operation, the 505E can be
programmed to trip, continue running and ramp the LP valve to its open limit, or
continue running and ramp the LP valve to its closed limit. When a failed input is
sensed the LP valve limiter steps to the LP valve’s last position, then ramps at a
1% per second rate to its min or max limit
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