Schneider XSAV tubular inductance sensor

The XSAV is a self-contained device used to detect and send output alarms for machinery under speed or zero-speed conditions, as well as early jamming detection. The early detection

of the under speed condition is useful in reducing downtime due to jamming or transmission failure. especially in the cases of medium and large motors.

The zero speed condition is used extensively for safety interlocking applications, including:

conveyors, pumps, mixers, centrifugal separators, elevators, saws, and crushers.

As long as the speed (number of pulses/min.) is above the threshold level – adjustable via 25 turn potentiometer within the threshold range – the output circuit assumes its closed state.

When the actual speed falls below the threshold level – the output circuit assumes its open state. To preserve the start up delay, the switch should be reset by removing and reapplying

the power supply.

When the line voltage is initially applied, the output automatically assumes its closed state for the duration of the start-up delay. This allows the mechanical assembly to overcome inertia and reach its nominal speed, greatly simplifying the interlocking circuit. After the start-up delay, the

switch will perform as described above.

Care should be taken not to exceed the maximum frequency rating above which the sensor cannot detect the target and therefore assumes “zero speed” condition.

Features:

• Universal AC/DC versions

• AC/DC models are PLC compatible

• Linear speed threshold adjustment

• Two adjustment ranges: 6 - 150 pulses/min. for zero-speed, 120 - 3,000 pulses/min. 

for jamming detection

• Built-in fixed power-up delay to overcome start-up inertia

• Radio frequency immunity (RFI)

• Reverse polarity protection on DC models

• Noise and transient protection

• Overload and short circuit protection (SCP) on DC models

• LED indicators for switch in “closed” state

• 25-turn potentiometer provides fine adjustment of the under speed threshold