Tuesday, December 1, 2015

CiA 402 update and extension.

The edition 2.0 of the IEC 61800-7 series has been published by CiA. It contains also the CiA 402 profile for electrical drives and motion control. In IEC 61800-7-201, there are specified the modes (e.g. Interpolated position mode, homing mode, etc.) and the related parameters.

CiA Documents may be downloaded
from their website!
The updated standard includes the new cycle synchronous torque mode with commutation angle. Besides some editorial improvements, this standard introduces new factor group parameters and supports additional sensor interfaces. Also the touch probe functionality has been updated.

Besides some minor editorial corrections, the IEC 61800-7-301 standard provides additional mappings of the CiA 402 profile to CC-Link IE and EPA, two Ethernet-based protocols. The CANopen, Ethercat, and Powerlink mappings are the same as in edition 1.0.

CiA has not updated its CiA 402-1, 402-2, and 402-3 specifications, for copyright reasons and to avoid inconsistencies with the IEC standards. “The CiA 402 profile is the most implemented standardized drive profile,” said Holger Zeltwanger, CiA Managing Director. “Most of the providers of servo and stepper controllers as well as frequency inverters are using it. You will find it also in many linear drives.”  

During the last SPS IPC Drives tradeshow, several companies introduced products supporting CiA 402.

CiA has released the CiA 402-4 specification defining functional safety parameters and the mapping to SRDOs (safety-related data objects). This specification derives from the ETG6100-2 specification. However, the SRDO mapping is CANopen-specific. “Safety torque-off (STO) is just the first step to introducing functional safety into motion control,” explained Zeltwanger. “In CiA 402-4 we have already specified more sophisticated safety functions.”

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