About your speed switch
The SST-2000A/H series is a speed switch and signal transmitter that provides
alarm set points for over- and underspeed control for sequential, startup, and
shutdown switching for:
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engines
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machines
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I/P drivers
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instrumentation
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process control
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recording
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measurement
How it works
The SST-2000A/H accepts a full-scale frequency input value from 0–0.1 Hz
(6 pulses per minute) to 0–50,000 Hz. Standard: 0–80 Hz to 0–20,000 Hz.
Examples of input devices include:
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passive or active magnetic pickups
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shaft encoders
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contact closures
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flow meters
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photocells
The speed switch converts frequency input (speed, rate) into linear proportional
dc outputs:
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0–1 mA (standard - meter out)
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4–20 mA (standard - proportional out)
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0–5 Vdc (switch selectable)
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0–10 Vdc (switch selectable)
It provides 0, 2, or 4 relay trip set points (depending on the model)
2
Chapter 1
When the SST-2000A/H Series Speed Switch/Transmitter is
used as the primary overspeed shutdown device, it
must
be
tested regularly.
WARNING
