480 Vibration Switches, Stud Mounted

Reliable, Low-Cost Machinery Protection

The Vitec 480 is a compact Vibration Switch which combines the functions of a Vibration Transducer, Transmitter and Monitor. It provides low-cost protection of rotating machinery by signaling users when excessive vibration levels exist, indicating developing machinery problems. Ideal for motors, fans, cooling towers and a wide range of general purpose rotating machinery and processing equipment.

Part No. Input Power
53278-0 120/220V AC (field selectable)
53278-4 24V DC

Specifications

Measurement mode

Velocity

Frequency range

5 – 1,000 Hz

Analog output

4 – 20 mA DC, proportional to full scale range

Input power

120/240V AC field-selectable or 24V DC (please specify when ordering)

Setpoints

2, field-adjustable from 0 – 100% full scale

Operating temperature

-25 to 160F (-32 to 71C)

Enclosure

Explosion-proof/weather-proof aluminum alloy

Environmental rating

NEMA 4

Weight

120/240V AC units: 2.4 lbs (1.1 kg)
24V DC units: 2.2 lbs (0.9 kg)

Mounting

3/4-10 stud

Conduit entry

3/4 NPT

Field Adjustable Settings

Full scale range

0 – 1in/sec or 0 – 3 in/sec

Alarm setpoint

0 – 100% of full scale range

Trip setpoint

0 – 100% of full scale range

Relay time delay

0 to 20 sec. per relay

Relay state

Normally de-energized (open below setpoint) or normally energized (closed below setpoint)

Relay configuration

Latching or non-latching

Relay inhibit

Inhibits relay operation during start-up or
machine maintenance

AC signal output

100 mV/g or 100 mV/in/sec

User benefits

  • Broad-range protection
    Provides protection across a wide range of vibration frequencies by detecting imbalance, misalignment, bad bearings and other machinery-related problems.
  • Vibration Level Setpoints
    Two relays activate when field-adjustable vibration levels are exceeded. These relays can be connected to devices to provide visual, audible or external relay activation when a vibration limit has been reached or exceeded. The higher vibration level selected is often used to shut down rotating equipment and avoid further damage.