Safe, space-saving control of assembly conveyors

Get more functionality in a small amount of space with SIRIUS motor starters. When it comes to employee safety at assembly stations, assembly conveyors must comply with very strict requirements. If the system also has to be flexible at the same time, compact, safe motor starter solutions are required so that enough space is left in the control panel for future modifications and expansions.
Technical specifications for 3RM1 motor starters

Industry Mall

SIRIUS 3RM1 fail-safe motor starter in use at Saechsisch-Bayerische Starkstrom Geraetebau GmbH

Saechsisch-Bayerische Starkstrom Geraetebau GmbH (SBG) has been producing oil distribution transformers for over 70 years. The high order volume and changes in customer requirements left the company no choice but to construct a new production line. As some of the new assembly conveyors had an open design, safety systems played a major role in the company's planning, which is why they chose the SIRIUS 3RM1 motor starter solution. The narrow width of just .88 inches not only left enough space for future expansions in the control panel, but also reduced the amount of wiring work by more than 50%.
Thanks to the combination of switching, protection and safety functions in the constricted available space for the control panels, this solution turned out to be a great solution.
Alexander August,managing director of AEM August Elektrotechnik GmbH (supplier of the electric equipment for the new SBG production line).

More than 50% space-saving with SIRIUS 3RM1 with SIL3 or Perfomance Level e (PLe)

Measuring less than 1 inch in width, the devices unite contactor and overload relay functionality in an extremely narrow enclosure. They are optionally available as direct-on-line or reversing starters and they switch three-phase asynchronous motors with outputs of up to 3 kW. In the safety variant, they are suitable for safety-related disconnection up to safety integrity level SIL3 or PL e in compliance with DIN EN ISO 13849. The amount of space and wiring work required can also be reduced for their control circuit because the motor starters are supplied with 24 V control voltage via the backplane bus of the device connectors. As a result, a complete group of motors can be disconnected from the control voltage in the event of an emergency stop. This kind of disconnection is technically identical with single disconnection of one fail-safe output in the F-control of each motor starter but saves considerably more costs because these outputs can be dispensed with. The wide setting range of up to 3 kW reduces the number of different versions in the control panel, thus freeing up further potential savings in warehousing.

More on this topic

SIRIUS 3RM1 products in the Industry Mall

Catalog and ordering system for Automation and Drives

FAQ about 3RM1

Questions and answers about 3RM1

Reference library

Do you want to learn how other customers successfully applied Siemens Controls technology to their systems? Check out our reference library for examples to help you in your daily work.