Standstill Monitor SAFEONE DN3PS2

Our SAFEONE DN3PS2 is suitable for the safe monitoring of standstill in systems and machines, and all without a measuring system/encoder. Neither proximity switches nor incremental encoders are needed to measure the operational status. 

Fits into every cabinet
Plug & Play
Individual Configuration


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DN3PS2 Stillstandswächter mit Zertifikaten

Safe Standstill monitoring easy as pie.

SAFEONE DN3PS2 Standstill Monitor

The standstill monitors from our SAFEONE Standalone Series do not require a measuring system, which makes them truly unique on the market. They safely monitor 1- to 3-phase motors up to 690V AC with Performance Level e according to DIN ISO 13849-1. The DN3PS2 standstill monitor measures the electromagnetic force (EMF) when the motor runs down. The potential-free output contacts switch when the switching threshold, which can be parameterised on the device, is undercut.

Relais_Diagnose Ausgang-1 sensorlos-1 Betriebsspannung-2 Breite 22,5mm-1 Schalteistung-1 PLe-3 SIL3-3 Phasen Überwachung-1


General Data


22,5 mm

Switching Capacity up to 3 A
In- and Outputs 2 Relay Outputs (1 safety Contact) + 2 Diagnostic Outputs
Connection Terminals Spring-loaded terminals, screw terminals

PLe (EN ISO 13849-1), SIL3 (IEC 61508), SIL CL3 (IEC 62061), UL-certified

Hardware-Parameterisation Yes
Software-Parameterisation No
Motion Monitoring without external sensor
Hardware-Diagnose/LED Yes
Safe Torque OFF (STO) Yes
Muting (bypass) Yes


Technical Data

Switch-on time 100%
Protection IP20
Installation Site any
Encasing Material/Type

Polyamide PA not reinforced/ ME/ Co. Phoenix Contact

Rated insulation voltage 250V AC
Surge voltage strength 4kV
Surge voltage category III
Measurements B x H x T/ 22,5 x 114 x 111mm
Connection terminals/ Material Plug-in spring-cage terminal blocks/ polyamide PA/ Co. Phoenix Contact
Conductor cross-section (flexible only) 0.25 - 2.5mm^2 with adhesive end sleeve
Connecting wire 60/75°C copper
Conductor cross-section AWG 12…24
Wire stripping length 8mm



Operating Voltage 24V DC -15%/+10% with reverse polarity protection
Current consumption at 24V DC ≤ 80mA
Current consumption L1, L2, L3 0,35mA at 690V AC/ 5KHz
Input voltage L1, L2, L3 90 to 690V AC
Input voltage A1/ A2 Type 2,8W
Status Indication 4 x LED 2-colored
Protective circuit Overvoltage and reverse polarity protection for operating voltage



Contact design 2 Release contacts
Contact switching current ≤ 10mA, ≤ 8mA
Switching cycles according to IEC/EN 60947-4- 1 100.000/ AC1: 230V/ 8A, 100.000/ DC1: 24V/ 8A
Switching current according to IEC/EN 60947-4- 1 AC15: 230V/ 3A, DC13: 24V/ 4A
Mechanical lifetime > 20 x 10^6 Switching Cycles
Contact Material AgNi10
Contact fuse protection 5A inert
Max. Switching Cycles 360 cycles/h at AC15/ DC13
Short-circuit resistance 200A/ Automat B6 Pre-fuse/ 800A/ 6A gL Fuse gG
Response, fallback time Typically 20ms
Outputs O1, O2 ≤ 100mA short-circuit and overload protected, only with ID-No.: 33PS08


Environmental Data

Temperature -20 to +55°C  according to DIN IEC 60068-2-3
Storage Temperature -40 to +85°C  according to DIN IEC 60068-2-3
Min. height  < 2000m above Sea Level NN
Vibration resistance in all 3 levels Sinus 10-55Hz, 0.35mm, 10 cycles, 1 octave/min
Clearance and creepage distances DIN EN 50178, safe isolation
Minimum installation protection class Installation in a control cabinet is mandatory

Block diagram (terminal assignment 33PS02, 33PS03, 33PS05)

Bildschirmfoto 2022-10-06 um 17.37.35

Two different function types are possible with the variants 33PS02, 33PS03, 33PS05.
The function type is selected via inputs I11 and I21.

Function 1 Function 2
I11 and I21 not connected I11 and I21 connected
Standstill monitoring is constantly active. Standstill monitoring is not active.
Close the enabling contacts when the
drive is at a standstill.
Enable contacts are closed (with 33PS05 only the enable contact 13/14 remains closed.
The enable contact 23/24 switches off on movement).
  The error detection "wire breakage
and "single-channel" is inactive. (not with 33PS05)


Sample Application for Function 2

Bildschirmfoto 2022-10-06 um 17.35.22



Safety parameters according to ISO 13849-1

Stop Category according to IEC 60204 0
Category according to DIN ISO 13849 4
Performance Level e
MTTFd [a] 77
PFHd 4E-08


Contact service life

Bildschirmfoto 2022-10-06 um 17.20.48



  • Three-phase motor with frequency converter
  • Single-phase AC motors
  • Motors with star-delta connection
  • Servo Motors


  • Woodworking
  • Metalworks
  • Cosntruction
  • Spindles
  • Centrifuges
  • and many more...

Your advantages summarised



No external measurement systems equals less components, lower costs as well as faster Certification and Validation.

Be independent

Can be used on all three-phase and single-phase motors up to Performance Level e, regardless of supplier and system.

Fits into every cabinet

With an overall width of only 22,5 mm/0.9 in

Tailored to your needs

SAFEONE DN3PS2 can be configured exactly for your needs:

  • Adjustable switching threshold 50-500 mV

  • Various adjustable delay times

Easy Configuration

Dependent on the model, via USB interface on the PC or directly via SET key. In the case of our rotational direction monitor, no parameterization is necessary at all.

Plug & Play

Easy to put into action without a great deal of prior knowledge. Integration into the circuit diagram is also very simple.

DN3PS2_33PS02_Stillstandswächter_front_transparenter Hintergrund