DS246: Certified Safety Monitors with SinCos Encoder without Signal Splitter

The devices of the DS240 - 246 series are designed for the connection of a SIL3/PLe certified sine cosine encoder or sensor. The DS246 is equipped with a relay, 4 transistor outputs and an analog output, but has no signal distributor (in contrast to the DS240).

  • SIL3 and PLe certification
  • Safety functions equivalent to EN 61800-5-2
    (SS1, SS2, SOS, SLS, SDl, SSM, SLI, SBC, STO, SMS)
  • 2 encoder input with format SIN+, SIN-, COS+, COS- [1 Vss]
  • 2 pulse inputs with format A, /A, B, /B [RS422]
  • 2 pulse- or control inputs with format A, B, 90°
    [HTL / PNP] (for rotary encoder, proximity switches or commands)
  • Input frequency up to 500 kHz
  • Forced-guided redundant output relay (NO)
  • 4 control outputs with push-pull characteristic, short-circuit-proof,
    [HTL], each inverse and redundant
  • Safety related 14 bit analog output for 4 ... 20 mA (scalable)
  • Power supply 18 ... 30 V
  • Compact housing for 35 mm mounting top hat rail
    (according to EN 60715)
  • Setup via USB port by operator software or plug-in display and
    programming unit BG230 (accessories)


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EC Declaration of Conformity

File type: pdf, File size: 164 KB

Manual series DS230-246

File type: pdf, File size: 4 MB

Manual BG230

File type: pdf, File size: 657 KB

Data Sheet DS230-246

File type: pdf, File size: 125 KB

Data Sheet BG230

File type: pdf, File size: 93 KB


The open source software SISTEMA (Secure Electronic Control Systems) provides assistance in the evaluation of safety-related machine control in context of EN ISO 13849-1 and simplifies risk assessment analysis.

SISTEMA-libraries (290 KB)

(available with login)

USBAB: USB cable for motrona DS series

USB connector type A on type B. Length 1,8 m.

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