Title:
CONTROL DEVICE AND PROCESSING EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2023/144923
Kind Code:
A1
Abstract:
A control device 1 is provided with: a motor control unit (10, 11, etc.) that supplies a drive current to a motor 3, which is a power source of processing equipment, so as to place the motor 3 in a normal operating state, and, in response to multiplexed commands (S1, S2) that are sent from the outside and relate to a safety function operation of the processing equipment, controls the drive current so as to place the motor 3 and the processing equipment in a safety stop state; and a command monitoring unit 16 that monitors whether or not the commands (High/Low of S1, S2) match each other. If the period during which the commands do not match exceeds an allowable value, the command monitoring unit 16 generates a safety stop signal Sd (High) for safely stopping the motor 3, and continuously sends the safety stop signal Sd (High) to the motor control unit. This configuration makes it possible to facilitate the construction of a safety system that uses a control device.
Inventors:
TAKEDA KENJI (JP)
AOYAMA TOMOYUKI (JP)
IMURA JUNNOSUKE (JP)
AOYAMA TOMOYUKI (JP)
IMURA JUNNOSUKE (JP)
Application Number:
PCT/JP2022/002877
Publication Date:
August 03, 2023
Filing Date:
January 26, 2022
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
G05B9/02
Foreign References:
| JP2020035129A | 2020-03-05 | |||
| JP2015014862A | 2015-01-22 |
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (JP)
Download PDF: