The DSD-3 Differential Speed Detector computes the plus or minus speed relationship of the tail to the head pulley,
Comparing this with percentage slip set points will alarm the Operator when slippage occurs.
The DSD-3 is the ultimate in conveyor loss of motion detection. A minimum percent speed feature checks for
mechanical failure between the motor and the tail pulley. Each of these features has its own time delay after start-up
and one common time delay to allow the DSD-3 to ignore nuisance alarms and/or shutdowns.

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