Speed Monitors

All the physical quantities can be expressed from a pulse sequence, including linear movement and rotation. They can be used to detect sequence like motor driving and speed monitor or fault sequence detection like over-speed, under-speed, blocking , standstill. Programmable relay output is available to switch according with input switching frequency, and an analog input 0 –20 mA or 4 – 20 mA adjustable to desirable range..
Also in these products you will find frequency to current transformers, standstill and slip monitors.

Rotational speed monitors are used to monitor rotating shafts or uniformly pulsating movements.A few of the many areas of application are belt speed monitoring on conveyor systems, under-speed monitoring of mixers, monitoring of vibratory feeders.

The FR-1 series speed monitor is a fully programmable compact unit designed for the evaluation of pulse frequency, rotational speed, linear speed and machine cycles. It is designed to accept an external pulse train from a single inductive, capacitive, or photoelectric sensor.

It is also possible to use a standard mechanical contact closure as an input. Common applications for the FR-1 include over-speed, under-speed and jam detection. It may also be used for fault monitoring and frequency to current conversion.

Adjustable function parameters include switch point, start up delay, output latching, output window function, scalable analogue output (zero and span), and hysteresis. The display indicates Hz, RPM or the milliamp value at the analogue output.

1. Din rail mounting Built -in frequency generator for easy set-up
2. Output Options - 2 relay, 2 transistor, analogue
3. LCD display - Hz, RPM
4. Push button programming - switch point, start-up delay, output selection

Input Signal: Inductive proximity switches, Photoelectric sensors


Jam Detection
Fault monitoring

Standstill monitoring is used for rotational speeds as well as uniform stroke movements, ie agitators, bin feeders, centrifuges, worm screws etc.

Slip monitoring is used wherever two rotational speeds need to be compared. Slip monitors can also be used to monitor the synchronisation of mechanically coupled drive motors to ensure uniform wire speed on cable machines.

Model FS

with model FS you can monitor slip between two rotational movements or synchronous running between two linear movements, have programmable set value (slip in percentage), combined slip and speed monitor (drive speed), error caused by slip during the start-up phase can be ‘ignored’ using the start-up delay time.

fault monitoring

  • slip
  • overspeed
  • underspeed

operational status

  • synchronous running
  • maximum speed
  • minimum speed

Compact 18 and 30 mm diameter speed monitors, 4 wire DC 3-wire AC and 2-wire AC/DC

Setting range: 3...6000 imp./min

  • 18mm diameter speed monitor detects under-speed and over-speed conditions
  • Pulse output allows external evaluation of the damping pulses
  • For rotational speed application up to 18,000 pulses/min
  • Programmable setpoint from 3 - 6000 pulses/min
  • 12mm sensing range