Standstill monitoring unit with solid state outputs

Safe Standstill monitoring unit based on Back EMF operation for two- and three phase systems.

  • Ready to use - covering all standard applications without additional setup
  • Easy integration in star- and delta wiring
  • Clear LED diagnosis of all in- and outputs
  • Applicable up to Category 4 acc. EN 954-1
Specifications & ordering info

Ordering information

Safety standstill monitoring unit

Safety outputs 1

Auxiliary outputs 1

Power input

Rated supply voltage

Terminal block type

Order code


3 (Semi-conductors)

2 (Semi-conductors)

24 VDC

Screw terminals


Spring-cage terminals



Ratings of standstill monitoring unit

Power input



Rated supply voltage

24 VDC




Input voltage

Standstill detection input (Z1-Z2/Z3-Z4) AC 415 Vrms + 10% max.

Maximum power supply frequency for AC induction motor

60 Hz max.

Internal impedance

Standstill detection input: approx, 660 k Ω

EDM input: approx. 2.8 k Ω




Safety standstill detection output

Sourcing output (PNP)

Load current: 300 mA DC max.

Auxiliary output

Sourcing output (PNP)

Load current: 100 mA DC max.

Application example

3-phase motor

3-phase motor with star-delta wiring

1. PNP transistor output

1. PNP transistor output

Have a question?

We are ready to help.

Contact us

Subscribe to product updates

Newsletters about product innovations, solutions and services, directly in your inbox.

Thank you for subscribing to Omron's eNews. You will shortly receive an e-mail from us. This e-mail contains a link which activates your email newsletter subscription. This method is used due to legal issues and to make certain that no-one can abuse your e-mail address.

We are experiencing technical difficulties. Your form submission has not been successful. Please accept our apologies and try again later. Details: [details]


Product documentation

Download datasheets, manuals and brochures.

Browse download center

Training courses

Get the training from our best engineers. Beginner to advanced level.

View training courses