Zero Speed Switch Selection Guide

Zero Speed Switch Selection Guide

Phares Zero Speed Switches are easy to use, maintenance free devices. Our Zero Speed Switches utilize proactive sensing to catch potential issues before they become a problem. Proactive sensing, in many cases, provides a soft landing instead of a hard crash. This prevents broken belts, gears, chains, sprockets, shear pin, and stressed, overheated electric motors. Typical applications include belt conveyors, drag conveyors, bucket elevators, fans, blowers, rock crushers, and pumps.

Zero Speed Switch Sensors

ZS09P - Power Relay

  • Switches up to 5 Amps
  • For control circuits
  • Dimensions: 1-1/16" Diameter x 4" Long
  • Thread: 17/16-14 2.0" Inches

ZS09R - Reed Relay

  • Switches 1/4 Amp pilot duty
  • For switching logic inputs (PLC, VFD, DCS, etc.)
  • Dimensions: 7/8" Diameter x 4" Long
  • Thread: 7/8-14 2.0" Inches
Common Features & Benefits of ZSS Sensors

Features

  • Compact, self-contained sensor and relay
  • Input Voltage: 120 VAC or 5-24 VDC
  • Senses magnetic and high iron content targets
  • LED indicators for instant visual confirmation
  • Detect speeds as slow as 0.02 RPM, or as high as 25,000 RPM

Benefits

  • No additional control box needed
  • Faster than pushing Emergency Stop
  • When all you really want to know is, “Is my machine running or not?”
  • Isolated contacts for easy integration

More Zero Speed Switches

ZS10 Zero Speed Switch Module

The ZS10 Zero Speed Switch Module will turn any sensor into a zero speed switch!

Simple On/Off Sensor + ZS10 Module = Zero Speed Switch

  • One SPDT Relay with NO/NC contact
  • Adjustable Setpoint
  • DIN Rail Mount
  • Universal sensor input, 24 VDC, 2 or 3 wire, NPN or PNP
  • Universal AC and DC input voltages
  • 1 – 6,000 PPR (pulses per revolution)
  • Detect speeds as slow as 0.02 RPM, or as high as 25,000 RPM

ZS11 Zero Speed Switch Module

The ZS11 Zero Speed Switch is particularly useful in applications where more than one sensor is used at a single point of measure to determine varying speeds.

Simple On/Off Sensor + ZS11 Module = Zero Speed Switch

  • Three independent SPDT Relays with NO/NC contacts
  • Adjustable set point
  • DIN Rail Mount
  • Easier than using multiple PLC inputs
  • Isolated relay contacts make it easy to integrate into new or existing systems
  • 1 – 6,000 PPR (pulses per revolution)
  • Detect speeds as slow as 0.02 RPM, or as high as 25,000 RPM

ZS12 Zero Speed Switch with Replaceable Sensor

The ZS12 Zero Speed Switch Sensor is a rugged, all-in-one device that includes a replaceable sensor and relay.

  • Self contained zero speed switch with relay and low profile, replaceable sensor
  • Adjustable Setpoint
  • Mount at point of measure
  • Cast aluminum enclosure with gasketed lid suitable for use in washdown areas
  • LED indicators for instant visual confirmation
  • Detect speeds as slow as 0.03 RPM, or as high as 25,000 RPM
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