Invention Grant
- Patent Title: Method and apparatus for driving a load
- Patent Title (中): 用于驱动负载的方法和装置
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Application No.: US12403581Application Date: 2009-03-13
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Publication No.: US08352051B2Publication Date: 2013-01-08
- Inventor: Thomas Bruce Meagher
- Applicant: Thomas Bruce Meagher
- Applicant Address: GB Maldon, Essex
- Assignee: Rockwell Automation Limited
- Current Assignee: Rockwell Automation Limited
- Current Assignee Address: GB Maldon, Essex
- Agency: Boyle Fredrickson, S.C.
- Agent William R. Walbrun; John M. Miller
- Priority: GBEP08165303 20080926
- Main IPC: G05B9/02
- IPC: G05B9/02

Abstract:
An output module for an Industrial Process Control System that drives a load in a failsafe manner. The output module drives a load in response to a driving signal and includes a controller that generates a command signal and a drive enable signal in response to said driving signal. A keep alive circuit generates an active keep alive signal unless the drive enable signal is inactive. The output module includes a driver circuit that generates a drive signal in accordance with the command signal when the keep alive signal is active such that the load can be driven with a channel failsafe switch in response to the drive signal. The output module can be integrated into any of a number of industrial process control systems to enhance the operability of such systems.
Public/Granted literature
- US20090234469A1 Method and Apparatus for Driving a Load Public/Granted day:2009-09-17
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