Position switch / limit switch / cam switch

ERC 40

  • Ø 14 mm solid shaft (flange or foot mounting)
  • Up to 15 position switches, switching capacity 230 V AC/DC, 0.5 A
  • Resolution 13 bit singleturn / 15 bit multiturn
  • Options: Current output (4-20 mA) for real-time position data
Electronic position switchesAnalog signal
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Position switch / limit switch / cam switch

The electronic position switches (limit switches) ERC 40 make it possible to flexibly monitor position ranges. For example, the position switches are deployed in hoisting gear, in crane technology and in mining operations as well as in screw downs and side guides in steel works. The electronic position switches are often used as a simple 1:1 replacement solution in legacy systems where mechanical cam switches are installed. Moreover, the electronic limit switches can also be integrated in new systems without any difficulty. The position switches ensure high accuracy and facilitate fast and easy system calibration by means of presets, by setting switching points as well as uncomplicated data storage.

Technical Data

Supply voltage

15-27 VDC

  • Multiturn 15 bit (32768 rotations)
  • Singleturn 13 bit (8192 steps per rotation or 0.044° = 360°/8192)
Switching outputs

Position switches; further switching functions on request (see U-ONE-Compact)

Signal outputs/Interfaces
  • None (switching relay only)
  • Current output 4-20 mA
  • Further interfaces (see U-ONE-Compact)
Maximum rotation

Solid shaft: up to 2800 rpm

Electrical connection
  • Base module: Terminal box (copper cable) + USB interface
  • Switching module: Terminal box (copper cable)
Construction type / Ø shafts

Solid shaft (B5, B35) / Ø 14 mm with feather key

Device temperature range

-25 °C to +70 °C

Degree of protection



Approx. 3.6 kg + 0.8 kg/module

Device options
  • Modularly extendable (up to 15 relay outputs or current output for real-time position data)
  • Further additional functions: UOC 40
  • SIL 2 (DIN EN 61508); PL d (DIN EN ISO 13849); Category 3 (DIN EN ISO 13849) can be implemented with USC 42
Mechanical options
  • Additional foot (solid shaft construction type)
  • MI: Saliferous environment
Special features and certificates

Simple replacement for mechanical rotary cam limit switches



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