Parker Hannifin, a leader in motion and control technologies, has introduced its PSD series of servo drives designed for use in central control applications.
All components utilise an Ethernet-based fieldbus system for communications with the controller via popular fieldbuses, currently in use in industry, such as EtherCAT, Ethernet IP and PROFINET.
Due to its flexibility, the new system can be used in a wide range of applications including highly dynamic packing and production machinery.
Accident prevention is one of key demands of the European Machinery Directive and with its PAC320 motion controller used in combination with the new PSD drives, Parker offers an integrated safety system.
Based on the Functional Safety over EtherCAT (FSoE) protocol, safety technology is central to the design of the new drives. No additional wiring is necessary as Parker uses integrated EtherCAT communication capabilities.
The programmable Parker Safety PLC is integrated as an expansion module into the EtherCAT network. As an FsoE master, it can address all safety components via the network such as safety inputs and outputs, as well as the PSD drive controllers with integrated safety technology.
External components can be connected directly to the safe I/O-Modules. This can be to activate features such as light curtains, emergency buttons and safety shut-off mats. The PLC coordinates all safety functionality from a central point, making system programming easier for the design engineer.
Individual functions including safe standstill SS1 or SS2, safely limited speed SLS or safely limited position SLP are executed on the safety board of the PSD drive. It covers the requirements per IEC 61508 SIL3 and DIN EN ISO 13849 PLe.
The complete system, comprising PAC Motion controller, Safety PLC, Safe I/Os and PSD-Drives with integrated safety can be centrally programmed with help of the IEC6-1131 programming languages.
All project information is stored in a single archive, including standard and safe applications plus all configuration information for the drives.
A multi-axis version of the PSD drive with central mains module is available to which further one, two or three-axes modules can be connected.
Power supply-modules and axis modules are linked via the shared DC-Bus to increase the energy efficiency of the system.
The compact design of the PSD series minimises space required in the control cabinet. In smaller systems, for example labelling machines, Parker also offers a single-axis stand-alone version with the same functions but in the lower output range.
When designing the PSD series, focus was given to ease-of-use – demonstrated through ‘fast wiring’, user-friendly operation and simple exchange.
A one cable solution for the standard feedback system means that the need for a feedback cable for the motor is negated. This can lead to considerable savings in cabling and installation costs.