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Motion network servos have safety built in

Motion network servos have safety built in
Compact construction and support for side-by-side mounting allows users of Omron's new Accurax G5 servo drives to achieve cabinet space savings of up to 50%. Yet, despite their diminutive size, the new drives combine outstanding performance - sub-micron accuracy and millisecond settling times are easily achieved - with a comprehensive range of built-in features, including safety and communication solutions. 

The drives are complemented by motors which are claimed to be 25% lighter and 15% smaller than their conventional counterparts, and which use ten-pole construction to achieve a 40% reduction in cogging. The Accurax G5 motors, which have an IP67 ingress protection rating, also feature an integrated 20-bit encoder.

Omron's new servo drives have two safety inputs and an external device monitoring output, which can be linked from one drive to another without the need for additional safety relays. Up to eight drives can be connected to a single safety relay, greatly reducing hardware and wiring costs. The safety torque off safety function of the drives conforms with PL-d in line with ISO13849, SIL2 in line with EN61508 and Cat 3 in line with EN954.

The Accurax G5 has three types of control available: analogue/pulse, MLII (Mechatrolink-II), and EtherCAT. The drives support full closed loop operation for applications where additional accuracy is needed, and incorporate advanced tuning algorithms that feature an anti-vibration function, a torque feed-forward function to reduce following error, and a disturbance observer.
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