Phase monitor

SAFEONE DN3PW

The phase monitors reliably monitor the supply voltage in three-phase networks. The SAFEONE DN3PW2 is designed for safety-related applications, while the SAFEONE DN3PW1 is suitable for non-safety-related applications.

First safety switching device for safe phase monitoring

Easy diagnosis and compact protection

Detection of voltage faults and phase disturbances

To the SAFEONE DN3PW2

To the SAFEONE DN3PW1

20250804_Produktbild_Phasenwächter_PW1_PW2

Safe Phase Monitor SAFEONE DN3PW2

The SAFEONE DN3PW2 safety relay monitors the three phases of the supply voltage of electrical systems or system components for phase relationship and voltage values. It can be used in safe applications where a failure could endanger people or damage machinery.

PW2_Merkmal (3) Produktseite DN3PW1 Symbole (2) PW2_Merkmal (6) PW2_Merkmal (8) PW2_Merkmal (7) PW2_Merkmal (9) 18-4 Breite 22,5mm-2 PLd Merkmal EN SIL 2 Merkmal EN

Measuring inputs

General data

Ambient conditions

Further technical data can be found in the manual, which you can download under Downloads.

Block diagram

Application example

S1= Switch for deactivating monitoring

Safety-related parameters according to DIN EN ISO 13849-1:2023-12

Safety parameters according to EN ISO 61508-High Demand

Manual

EC Declaration of Conformity

EC-type Certification

Application

In production lines with electric overhead conveyors (EOC), the safe phase monitor specifically monitors conductor rails. If a rail is switched off, the device detects this and thus enables the controlled shutdown of a system.

For drives that can feed energy back into the grid (e.g., during braking), the phase monitor ensures that energy is only fed in when the supply voltage is correct, complete, and stable.

Your advantages at a glance.

Unique on the market

The SAFEONE DN3PW2 is the first series-ready, separate safety switching device for safe phase monitoring.

Easy diagnosis and compact protection

The device enables easy diagnostics via LED indicators and offers compact protection against the consequences of power supply disturbances.

Detection of phase fluctuations

The SAFEONE DN3PW2 detects the most important phase faults such as phase failure, phase relationship, and under- and overvoltage.

Adjustable response time

The response time of the phase monitor can be set individually.

Adaptable to any grid situation

The reference voltage can be flexibly adapted to any grid situation: teach for grids with strong voltage fluctuations or 400V fixed for stable grids.

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Phase Monitor SAFEONE DN3PW1

The SAFEONE DN3PW1 monitors the three phases of the supply voltage of electrical systems or system components for phase relationship and voltage values. In the event of a fault, it reacts within at least ten milliseconds. The switching device is not intended for safety-related applications.

PW2_Merkmal (3) Produktseite DN3PW1 Symbole (2) Betriebsspannung-3 Betriebsspannung (2) Betriebsspannung-4 Breite 22,5mm-2

Measuring inputs

General data

Environmental conditions

Further technical data can be found in the manual, which you can download under Downloads.

Block diagram

Application example

S1= Switch for deactivating monitoring

Contact service life

Electrical life of the output contacts according to DIN EN 60947-5-1/ Appendix C.3

Bildschirmfoto 2022-10-14 um 15.57.36

Manual

EC Declaration of Conformity

EPLAN macros

Sistema library

DINA STEP modules

Application

The phase monitor is used to monitor the supply voltage of machines operated under unstable grid conditions. If a grid failure is imminent, the device detects it immediately and enables movements to stop or reverse in time to prevent damage to workpieces, tools, or system components.

For drives that can feed energy back into the grid (e.g., during braking), the phase monitor ensures that energy is only fed in when the supply voltage is correct, complete, and stable.