DC common bus self-protection method and system
AssigneeRockwell Automation Technologies, Inc.
InventorsTodd M. Oestreich, Timothy A. Davis
Life of this patent
Estimating the term…
Abstract
A system and method in accordance with the present technique for protecting motor drives from damage due to misconfiguration while coupled to a common DC bus, comprises sensing electrical operating parameters of the motor drives, automatically determining whether each of the drives is actually installed as a common bus leader or a common bus follower, and comparing the actual installation of the motor drives to a respective stored configuration of each of the motor drives as either a common bus leader or a common bus follower.
Claims20
A method for protecting motor drives from damage due to misconfiguration while coupled to a common DC bus, comprising:
- sensing electrical operating parameters of the motor drives;
- automatically determining whether each of the drives is actually installed as a common bus leader or a common bus follower;
- and
- comparing the actual installation of the motor drives to a respective stored configuration of each of the motor drives as either a common bus leader or a common bus follower.
A method for protecting motor drives from damage due to misconfiguration while coupled to a common DC bus, comprising:
- sensing electrical operating parameters of a motor drive installed as a common bus leader and a motor drive installed as a common bus follower;
- automatically determining whether each of the drives is actually installed as a common bus leader or a common bus follower;
- and
- comparing the actual installation of the motor drives to a respective stored configuration of each of the motor drives as either a common bus leader or a common bus follower;
- and
- disabling an operation of at least one of the motor drives if the drive installed as a common bus leader is configured as a common bus follower or if the drive installed as a common bus follower is configured as a common bus leader.
A method for protecting motor drives from damage due to misconfiguration while coupled to a common DC bus, comprising:
- sensing electrical operating parameters of the motor drives;
- automatically determining whether each of the drives is actually installed as a common bus leader or a common bus follower;
- comparing the actual installation of the motor drives to a respective stored configuration of each of the motor drives as either a common bus leader or a common bus follower;
- and
- preventing a change in the stored configuration for a motor drive based upon the determined actual installation of the motor drive.
A system for protecting motor drives from damage due to misconfiguration while coupled to a common DC bus, comprising:
- a first motor drive installed as a common bus leader;
- a second motor drive installed as a common bus follower;
- sensing circuitry coupled to the motor drives for sensing electrical parameters of the motor drives;
- and
- at least one controller configured to automatically determine whether one of the drives is actually installed as a common bus leader or a common bus follower and to compare the actual installation of the motor drives to a respective stored configuration.
A machine readable medium storing code for execution by a programmed computer, the medium comprising code for:
- automatically determining whether each of a plurality of motor drives is actually installed as a common bus leader or a common bus follower;
- comparing the actual installation of the motor drives to a respective stored configuration of each of the motor drives as either a common bus leader or a common bus follower;
- and
- disabling an operation of at least one of the motor drives if the drive installed as a common bus leader is configured as a common bus follower or if the drive installed as a common bus follower is configured as a common bus leader.
Dependencies are inferred from the claim text.