New PC840 servo drives series from Pacific Scientific (Rockford, IL) use SERCOS interface for closed-loop, real-time distributed control. The SERCOS chip ensures each drive receives update commands, such as positioning, velocity, or torque, from the controller as fast as every 500 microseconds.
At best, the use of the Ethernet at the device or I/O level is in the “early adopter” stage, with the level of rhetoric vastly exceeding the amount of real-world shipments, according to a new study from ARC Advisory Group (Dedham, MA).
All Sato’s (Sunnyvale, CA) industrial printers use plug-in interface cards for maximum flexibility. They can be easily changed in the field in a matter of seconds to accommodate any common host interface, including USB, Ethernet, and IEEE 1284 company says.
Ormec (Rochester, NY) ServoWire® digital drives in 25, 35, and 60 amps RMS/phase models provide power from 150 to 15ꯠ watts. Networking capability is IEEE-1394 (FireWire)-based for high speeds and cost-effective industry standard cabling.
Intended for use with packaging machinery, the Simodrive Posmo A distributed drive system from Siemens Energy & Automation (Alpharetta, GA) is an intelligent positioning motor that resides as a node on a Profibus-DP network, receiving both power and signaling on one cable.