HITACHI Auxiliary Door Lock Contact GRDQ-6641

HITACHI Auxiliary Door Lock Contact GRDQ-6641The GRDQ 6641 is an electrical safety device that verifies complete closure and locking of both hoistway and car doors. Elevator operation is only enabled when all door lock contacts are securely engaged. For more information, please contact customer service. Product parameter (specification) Parameter Specification Brand HITACHI Type Elevator Component Category Auxiliary Door Lock Contact Model GRDQ 6641 Compatibility HITACHI Systems Warranty 1 Year

It receives commands from the elevator¡¯s main control system and drives the door motor to follow a predefined speed curve

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and use it together with external sub-controllers and main controllers

It executes pre-programmed logic to manage elevator operations such as starting

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improving the overall system's reliability and user experience

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