M3003, M3008 & M3007 Slipswitch
Underspeed Sensor
M3003V10AI, M3008V10AI, M3007V10AI

The M300 Slipswitch is an easy-to-use inductive proximity shaft speed monitoring device with an adjustable 0 - 30 second start-up delay, all housed in a 30 mm diameter moulded body. The self-contained unit has a single set point, which signals when the shaft speed has dropped by 20% of normal running speed. It is used for detecting dangerous slow down and underspeed conditions on conveyors, bucket elevators, air locks, mixers, fans, grinders and many other machines. 

No connection is necessary between the sensor and the equipment being monitored. The proximity sensor detects a stud or bolt mounted on a shaft, or other suitable target. Ideally, the target should be of ferrous metal, but non-ferrous metal will be detected at a shorter range. Maximum range of ferrous targets is 8 mm (5/16”) and for non-ferrous targets is 5 mm (6/16”), assuming a 20 mm (3/4”) diameter target. Smaller targets may be used but operating distances will be reduced.

M3003 & M3007 Slipswitch
Product Features
  • ATEX and IECEx Zone 20 (Dust) and Zone 0 (Gas) Approved
  • Signals underspeed for bucket elevators, conveyors and all rotating machinery
  • Inductive proximity sensor in 30mm diameter housing, which detects rotating metal target
  • 20% underspeed set point
  • 2 wire & 5 wire versions available
  • Easy and reliable calibration procedure by using a magnet
  • Non-contacting & failsafe
  • Compatible with the Whirligig speed sensor mount
Electronics Application

Belt Conveyor

Belt Conveyor

Bucket Elevator

Bucket Elevator
Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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IECEx

IECEx
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IECExv3

EACEX

EACEX
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EACEx

CnEx

CnEx
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Nepsi

CSA

CSA
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CSA logo

CE

CE
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CE Logo
M3003, M3008 & M3007 Slipswitch

Specification Value
Supply Voltage: 24 to 240 VAC/VDC
Supply Fusing: Supply to be fused at 500mA maximum
Switching Capacity: M3003V10AI: 100 mA maximum; M3007V10AI: 60VDC/VAC, 3A
Saturation Voltage: M3003V10AI: 5.5 Volts maximum (output on); M3007V10AI: N/A
Leakage Current: M3003V10AI: 1.6 mA maximum (output off); M3007V10AI: N/A
Ambient Temperature: 5°F (-15°C) to +122°F (+50°C)
Output State: M3003V10AI: FET; M3007V10AI: SPCO relay
Sensing Range: 5/16” (8 mm) maximum on ferrous metal at 77°F (25°C)
Input Pulse Range: 10 to 3,600 pulses per minute (PPM) maximum
Start-Up Delay: Adjustable - 0 to 30 seconds
Trip Point: 20% below set speed
Enclosure: Nylon - ISO threaded 30 mm by 1.5 mm pitch
Relative Humidity: 90% RH
LED Indicators: Blue - Target Sensed, Green - Set Speed
Connections: 2 wire (M3003V10AI) or 5 wire (M3007V10AI), 3m long cable.
Protection: IP66