An external 24V control input option has been added to NORD Drivesystems’ entry level SK2x0E motor mounted decentralised inverter. This option allows the possibility for inverter parameter set-up without mains power, and control availability – including position interrogation – under power failure conditions where a backup supply can be used.
The comprehensive and performance graded SK2xxE product series is directly mounted to a wide choice of NORD standard or high efficiency IE2 and IE3 rated motors and gearmotors, or supplied as near-motor panel mounted drives.
Features of the inverter include power ratings from 0.25 to 7.5kW, from single and three phase supplies, and an advanced sensorless current vector drive with a broad selection of standard and optional control and fieldbus communications. The modular and scalable inverter allows users to select only those options that are necessary for their application. Entry level built-in features include Class A line filtering, EEPROM parameter storage, brake management, encoder feedback and basic positioning control. A status and diagnostics console provides I/O status LEDs and RS232/485 communications interfacing. Version options include an AS-I interface with a ‘Safe-Stop’ protocol providing EN954-1 compliant safety. More advanced features are available through direct programming or with externally mounted control box options, the company explains.
The SK2xxE product series also includes a selection of expansion card options called Technology Boxes that extend the capability to include Profibus, CANopen and DeviceNet for direct parameter adjustment as well as expanded machine I/O.