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US 7,116,069 B1Granted
Rapid configuration safety motor drive kit
AssigneeRockwell Automation Technologies, Inc.
InventorsRandall R. Holterman, Phillip John Walesa
Life of this patent
Estimating the term…
Abstract
Rapid connection of multiple motor drive modules for safety operation may be made using screw terminals for initial connections to a safety controller and pre-wired cables for daisy chaining subsequent motor drives responsive to the same safety signals. Adaptor modules may be used to provide for a variety of different connector configurations depending on the location of the motor drive within the signal chain.
Claims18
A rapid-configuration safety motor drive comprising:
- power input terminals of receiving a source of power;
- motor output terminals for providing power to an electrical motor;
- safety signal terminals for communicating dedicated safety signals including at least two redundant enable signals and at least one contact feedback signal;
- safety logic circuit for receiving the dedicated safety signals to produce at least one motor enable signal;
- motor control circuitry connecting the power input terminals to the motor output terminals to control the power to the electrical motor according to the motor enable signal;
- and
- wherein the safety signal terminals provide at least one multiwire pluggable connector configured to communicate dedicated safety signals received by the safety motor drive to multiple safety motor drives through mating connector cable different safety signals being communicated on different individual conductors of the multiwire pluggable connector.
4 more elements
A rapid-configuration safety motor drive kit comprising:
- a motor drive having:
- (a) power input terminals for receiving a source of power;
- (b) motor output terminals for providing power to an electrical motor;
- (c) safety signal terminals for communicating dedicated safety signals including at least two redundant enable signals and at least one contact feedback signal;
- (d) safety logic circuit for receiving the dedicated safety signals to produce at least one motor enable signal;
- (e) motor control circuitry connecting the power input terminals to the motor output terminals to control the power to the electrical motor according to the motor enable signal;
- wherein the safety signal terminals include a first pluggable connector communicating from the safety logic circuitry to an adapter, different safety signals being communicated on different individual conductors of the first multiwire pluggable connector;
- and
- a set of adapters selected from the group consisting of:
- (a) an adapter with screw terminals for receiving the dedicated safety signals directly from a safety controller;
- (b) an adapter with a pluggable multiwire connector for forwarding dedicated safety signals to a later safety motor drive through a prewired mating connector cable;
- and
- (c) an adapter with a pluggable multiwire connector for receiving dedicated safety signals from a previous safety motor drive through a prewired mating connector cable.
10 more elements
Dependencies are inferred from the claim text.