Towers |
NCRT |
Counter |
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2019 |
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Proximity |
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General Operation The sensor consist of two hall-effect elements biased with a magnet to detect the change in magnetic field strength caused by the rotation of a ferrous target gear. When the target gear passes by sensor element A, the output switches from a logic 0 to a logic 1 at half the pitch (P/2) of the target gear. As the target gear continues, the output switches from a logic 1 to a logic 0 at the gear pitch (P). |
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Sensor element B is placed at a distance of one fourth of the pitch of the target gear (P/4) from element A. The output of element B is shifted by one forth (P/4) from the output of element A. In electrical terms, this creates a phase shift of 90°. When the gear turns in the counterclockwise direction, output A leads output B. When the gear turns in the clockwise direction, output A lags output B. | ||||||
Junctionbox Using 12-core double shielded cable fron the control box towards the first junction box within the coax shed. |
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Drilling Sometimes a magnet drilling machine doesn't fit. In this situation I ahd to drill a hole close to as standoff and as you can see the performance is quick different ;o) |
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Limit
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Actuator over travel Acceleration time parameters always set the time to accelerate from 0 to the maximum output frequency. Deceleration time parameters always set the time to decelerate from maximum output frequency to 0. Using solid steel actuators to secure the overtravel time. |
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