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UO-EM-EGS4 / UO-EM-EGS41 SIL 2 (speed switch module)

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  • Monitor overspeeds and underspeeds

  • Relay contacts / switching outputs: 2 programmable, 1 diagnostics

  • Switching capacity up to 250 V AC/DC and 0.5 A

  • Options: SIL 2 / PL d certification (UO-EM-EGS41)


Technical Data
Attribute Value
Supply voltage 12-30 VDC
Signal outputs/Interfaces

Module UO-EM-EGS4:

- 2 speed switches (NO contact 2-230 V / 0.5 A AC/DC), 4 selectable operating ranges available :
0.63-300 rpm / 2.5-1200 rpm / 5-2400 rpm / 10-3000 rpm

- 1 system monitoring switch (NO contact 2-230 V / 0.5 A AC/DC)

- Programmable functions via decoder module UO-EM-D2 :
Password protection, inverse direction of rotation evaluation, overspeed and underspeed, switching delay, direction-dependent switching function, switch test, monitoring

Module UO-EM-EGS41 SIL 2 :

- 2 speed switches (one each NC contact and NO contact, max. 230 V / 0.5 A AC/DC), operating range 0.5-2700 rpm

- 1 Diagnostics switch (NC contact, max. 230 V / 0.5 A AC/DC)

- 1 potential-free reset input (12…30 VDC)

- Programmable function via mini USB :
Password protection, inverse direction of rotation evaluation, overspeed and underspeed, direction-dependent switching function, switching delay, open-circuit recognition, delayed overcurrent switch off, switch test, monitoring

Electrical connection

Module UO-EM-EGS4

- Screw terminals to connect switches

- Series connectors to preceding and following modules (internal bus connection)

Module UO-EM-EGS41 SIL 2

- Screw terminals to connect switches and reset input

- Mini USB to facilitate programming functions (software EGS 41 Pro)

- Series connectors to preceding and following modules (internal bus connection)

Dimensions 99.5 x 45 x 114.5 mm (modular electronics housing for DIN rail)
Device temperature range -25 °C to +70 °C
Degree of protection IP20 (switchboard installation)
Device options Combines with other modules belonging to the U-ONE System
Mechanical options  
Special features and certificates

- UOM 41L and associated modules UO-…-… 41: SIL 2 (DIN EN 61508); PL d (DIN EN ISO 13849)

- UL/CSA

The speed limiters
The speed switch modules are electronic overspeed switches that monitor the defined speeds for overspeed and underspeed. By design they include a switching delay, an inverse direction of rotation evaluation, a direction of rotation dependent switching function and the option to perform a switch test. They are easily programmed via the decoder interface.
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