Large control cabinet space requirements, bulky cable trays, and complicated distributor box installation:  When motors in conveyor systems are safely turned off in the traditional manner, the wiring and energy distribution involved is typically very complex. Wieland Electric wanted to reduce the installation complexity and make it more user friendly.  This motivated Wieland to develop the new motor starter Podis MS 5HP.  The extremely compact, robust, and user-friendly motor starter includes an integrated STO (Safe Torque Off) function, that when activated, renders the connected motor torque-free, by disconnecting power to the motor while allowing the motor starter itself to maintain power. This adds the benefit of continued safety monitoring and control and as a result, STO circuits no longer need to be routed over long distances to a central control panel or assigned to a specific voltage phase. Thereby reducing the system’s susceptibility to interference and providing significant benefits for planning and installation work.

This innovative combination of starter functions enables the distribution of all energy and the decentralized assignment of STO circuits in the field.  Furthermore, a high level of safety (SIL 3, PL e) can be attained with little effort.  All motors starters in an emergency stop circuit are connected to STO female sockets, and the STO circuit is monitored and controlled by an auxiliary voltage generated in the field, as well as a two-channel safety relay.  In addition, multiple STO circuits can be powered by a single power supply.

When an energy bus system, such as Wieland Electric’s Podis 5G6, is used, additional benefits of separating energy and signal are realized:  Because the energy distribution for multiple motor starters and motors can be combined on a single line with only one feed.

This saves space in the cable trays and simplifies wiring in the distributor panel.

Furthermore, the Podis MS 5HP is designed in such a way that a single size can cover a power range of 0.25 kW to 4.0 kW.  This aids in the reduction of storage and administration costs.  The procurement and materials management processes are also simplified because there is only a single order option. The processes for installation and commissioning are also straightforward:  DIP switches can be used to fully program the motor starter.  The user can make the settings for the motor and the application concerned after being guided through the procedure step by step by an intelligent web configurator guide.  Scanning the QR code on the front of the device with a smartphone or tablet will bring up the configurator and other information on the motor starter.

The Podis MS 5HP is appropriate for worldwide use, with CE, UL (and UKCA from Jan 2023) approvals. It meets the required operational standards in the US market, including the design of the disconnect switch in compliance with UL 508.  This is an integrated service switch for safely turning off motors for maintenance or repair work by disconnecting individual conveyer production or consumers lines, without shutting down the entire system.  Another benefit is a specific inbuilt power supply that creates the 24V DC auxiliary voltage required to supply the attached sensors without using the neutral wire, eliminating the need for additional separate cabling. Saving time and money, the Podis MS 5HP is designed to meet the protection class of both IP65 and NEMA12 and is therefore suitable for tough industrial environments in a global market.




Wieland Electric Ltd
Ash House
Tanshire Park
Shackleford Road


Tel: 01483 531213

Web: www.wieland.co.uk