Electronic hollow shaft position indicator with serial output

The EP-RS electronic indicator, which is supplied with an internal battery and includes in the same case the position sensor and the display unit, measures linear or angular movements,  applicable to many types of industrial machinery (packaging, woodworking, aluminium, coil etc).

Main features:
Simple assembly through the hollow shaft (that turns on precision ball bearings); shockproof, self-extinguishing plastic container.
Powered by long battery life, easy replacement from the front (without loss of quote and parameters)
  EP-RS with external power supply 12-25Vdc and internal rechargeable battery (functioning for 6 months without power supply), serial output RS485 protocol MODBUS RTU for communication with remote units.
  EP-RS.MAN is for manual positioning (for ex. manual shape change): the supervision unit (PLC, computer) trasmits the value to each EP-RS.MAN and the operator moves the axis by hand to reach this value.

Main functions:
Directly programmable by the three front keys; on the display all activated functions are shown by a symbol.
Setting of the value shown on the display for every turn of the hollow shaft;  measurement direction, number of decimals.
Parameters of reset/preset; absolute/relative reference; mm/inches conversion and display in degrees.
3 distinct origins for the correction of by using different tools and the offset function for the compensation of tool wear.


1. Connectors
2. Lock pin ø6: I40 (I30)
3. ø20 or ø25 hollow shaft
4. Dust seal

Accuracy 4000 impulsi/giro
Available functions Reset/preset, quota assoluta/incrementale, conversione mm/pollici, visualizzatore in gradi, 3 origini distinte per cambio utensile, compensazione usura utensile
Display LCD altezza cifre 10 mm
Electromagnetic compatibility - EMC 2014/30/EU
Hollow shaft EP20RS: 20 mm H7 EP25RS: 25 mm H7
Keyboard 3 tasti per programmazione ed attivazione funzioni
Max. revolution speed 1000 RPM
Power supply EP-RS:10-25 Vdc
Protection degree IP54
Range -999999 +999999
Relative humidity 30-90%
Serial port RS485 MODBUS RTU
Working temperature 0-50°C

Reducing bushes for shaft block flange (technopolymer).

Technopolymer bushes.

Thermoplastic material, steel bush.


Thermoplastic material, steel bush.


Shaft block flange FLB-EP20

With the drive shaft block flange on the indicator as a compact unity, we obtain a safe blocking of the drive shaft.
Flange in aluminium. 

Overall dimension

Movement knob PM-EP20

The motion-knob is directly assembled on the shaft of programmable position indicator EP20.
On request stickers (neutral or with Fiama logo), which on the motion-knob’ s front shows the increase or decrease of measure wise.
Material: anodized aluminium.

Overall dimension       



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