Compact Safety Control 


Our latest product innovation simplifies machine safety on a level never seen before. With a width of only 22.5 mm, the SAFEONE DS is the most compact safety device that covers speed monitoring as well as three other safety circuits. The module meets the requirements of ISO 139849-1 up to Performance Level d.

Compact & Simple
Highly cost-efficient
Configurable by Software


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SAFEONE DS mit Zertifizierungen

Machinery Safety has never been this easy.

You are looking for a simple solution for speed monitoring that also provides you with safety functions (e.g. emergency stop or door monitoring), but do not want to give up on compact design nor simple validation?
For people like you, we have developed the SAFEONE DS safety module:
The first solution that offers safe speed monitoring, but also emergency stop and door monitoring features at the same time.
The SAFEONE DS guarantees maximum Safety – depending on the application, up to PL d according to
EN ISO 13849-1.

17-4 18-4   19-320-221-222-424-3

Safety Features

25-2SLP26-127-128-1 STO EN


Power Supply

Operating voltage UB 24 V DC (-15/+10%)
Current consumption at 24V 50 mA
Power consumption at A1/A2 1,2 W


Digital Inputs

Inputs 10 safety-related inputs I1 - I10
Power consumption typ. 4 mA (at UB)
Input voltage range "0" signal 0...5 V DC
Input voltage range "1" signal 15 V DC...30 V DC


Measuring Inputs: Encoder Inputs

Encoder Input 1 safety-related encoder input
Signal type Sin/Cos, TTL
Cut-off frequency 50Hz until 300kHz


Semiconductor Outputs

Outputs O1, O2 IO1, IO2
Output type Bildschirmfoto 2023-01-16 um 10.38.46 Bildschirmfoto 2023-01-16 um 10.38.46
Voltage 24 V 24 V
Max. Switching Current 1 A 0,5 A
Max. Total Current 2 A 1 A
Min. Switching Current 1 mA 1 mA


Contact Outputs

Outputs 13/14, 23/24
Contact Material Ag alloy
Output guidance, Performance Level Bildschirmfoto 2023-01-16 um 10.43.55


Min. Switching Current 10 mA
Breaking capacity according to IEC 60947-5-1 DC13: 1A/30V DC
Mechanical service lifetime 5 x 10^7 switching cycles
Contact fuse protection 3 A gL/gG
Response/relapse time typical 10 ms / 10 ms


General Data

Protection class (housing and terminals) IP20
Protection class (installation location) min. IP54
Air and creepage distances between the current circuits according to DIN EN 50178
Rated insulation voltage 50V AC
Rated surge voltage / insulation 0,8 kV
Pollution level 2
Overvoltage category III
Casing material Polyamide PA not reinforced


Terminal data

Terminals Spring-loaded terminals, pluggable
Conductor cross-section 0,25 – 1,5mm
Conductor cross-section AWG AWG 24...16
Conductor type Flexible with ferrule without plastic sleeve
Stripping length 9 mm


Environmental Data

Operating temperature -10 °C until +55 °C
Storage temperature -40 °C until +85 °C
Height of the application area < 2000 m above sea level
Shock resistance 11g
Vibration resistance 2g



B x H x T 22,5 x 114 x 111 mm
(0.886 x 4.488 x 4.370 in)
Size of the standard rail 35,0 mm (1.378 in)


Block Diagram

Blockschaltbild_safeone ds



Bildschirmfoto 2023-01-16 um 11.34.06 Emergency Stop Switch
Bildschirmfoto 2023-01-16 um 11.35.03 Protective Door
Bildschirmfoto 2023-01-16 um 11.35.35 Enabling switch
S1 Acknowledgement button for speed monitoring and emergency stop
S2 Unlocking the protective bonnet
S3 Selection special operating mode
E1 Guard locking Protective bonnet

Safety-relevant parameters according to DIN EN ISO 13849-1:2016-06

MTTFd [a] 100
Category 3
Performance Level d
PFHd 1,01E-07
Requirement rate < 12 Monate
Service life 20 Jahre


Contact Service Life

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

Bildschirmfoto 2023-01-16 um 11.25.47



  • Machines that do not have the complexity requiring a freely parameterisable system, such as SAFELINE VARIO
  • Machines that currently use more than one safety relay
  • woodworking machines, small grinding machines, centrifuges, mixers & agitators, saws, mobile lifting platforms, shredders etc.
  • Machines with only few safety functions that require speed monitoring


  • Sägen für Holz und Kunststoff
  • Rolltreppen
  • Lüfter
  • Zentrifuge
  • Schaltschrankbau
  • Fahrgeschäfte
  • Pneumatik-Systeme mit wenigen elektrischen Achsen
  • u.v.a.m.

Your advantages summarised


More Space in the cabinet

The first module on the market that combines safety circuits and speed monitoring in a really compact way (22.5 mm).


Instead of buying a new multifunction safety control with too many functions, only buy the functions you really need. This saves real money.

Multifunctional Parameter Setting Software

No complex application, no further parameterisation hardware modules necessary and yet maximum flexibility.

Easy as pie

Less technology, simple design, integration, validation and documentation, just plug in and enjoy.