Dynalco SST-2400H Speed Switch/Transmitter User Manual download pdf (Page 5)

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:

engines

machines

I/P drivers

instrumentation

process control

recording

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:

passive or active magnetic pickups

shaft encoders

contact closures

flow meters

photocells

The speed switch converts frequency input (speed, rate) into linear proportional

dc outputs:

0–1 mA (standard - meter out)

4–20 mA (standard - proportional out)

0–5 Vdc (switch selectable)

0–10 Vdc (switch selectable)

It provides 0, 2, or 4 relay trip set points (depending on the model)

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

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Dynalco SST-2400H Speed Switch/Transmitter User Manual Page 5