WOODWARD 2301A Speed Control 4–20 mA 1–5 Vdc Speed Set

WOODWARD 2301A Speed Control 4–20 mA   1–5 Vdc Speed Set

Description

The 2301A Full Authority Speed Control is housed in a sheet-metal chassis and consists of a single printed-circuit-board assembly. All adjustments are accessible through the front of the chassis. Speed range is set by positioning an internal switch, accessible inside the cover of the control. Speeds are set according to the speed-sensor output frequency in hertz

Special circuits provide high- and low-limit adjustments. These limits set the maximum and minimum speed that can be set by varying the speed-setting milliamp or voltage reference. The low limit can be set as high as rated speed, if desired, limiting the ability of the process or computer speed setting to reduce speed. If needed, the low-limit setting can be used to control engine operation on loss of the speed-reference signal. The start-fuel limit sets a maximum actuator position during the start sequence. It is biased out of the way when speed reaches the control set point. This feature can be used to limit excessive startup smoke, reduce cylinder wear caused by the washing action of excessive fuel, and help reduce startup time. An external switch connection is provided to disable the start-fuel limit, if desired, to prevent reverse-acting systems from reverting to the start-fuel position on loss of magnetic pickup. All 2301A controls feature an internal, isolated power supply for improved noise immunity and ground-loop protection. The control provides maximum protection from electromagnetic and radio-frequency interference.

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WOODWARD 

در ایران

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