Vertiv Corporation

Amruta B Jamdade

Rahul A Gosavi

Niketan Patil

Abhijeet V Deshmukh

A system and method for time-based safe mode operation of a multi-mode chiller device incorporating a freecooling system and a direct refrigeration system (e.g., wherein a fluid loop is circulated between the chiller device and a data center or similarly sensitive environment, from which the chilled water transfers heat before returning to the chiller device) senses ambient air temperatures outside the data center environment and return water (RW) temperatures (e.g., of water returning to the chiller from the environment) and engages the freecooling system based on a difference or delta between ambient and RW temperatures. If either the RW or ambient temperature sensors fail, preventing the freecooling system from engaging automatically, time-based safe mode is engaged wherein the freecooling and direct refrigeration systems are alternately engaged according to configuration time parameters adjustable by a user.

Time-based energy efficient safe mode for freecooling unit

An intelligent graphic human/machine interface unit (GHMI) for a power controller device detects, via visual sensors, a user proximate to the device and transitions from 'sleep' to “command” mode. When in “command” mode, a user may authenticate themselves to the device, and provide (e.g., in “active” mode) control input for executing device functions, either via a touchscreen display of the GHMI unit or via unlock and command gestures manually performed by the user, detected by the visual sensors, and decoded by the GHMI controller. Command gestures may be mapped to specific control functions and/or command sequences commonly executed by the power controller device. By allowing a user to provide authentication and control input via signed gestures, a user wearing protective gloves or other protective gear precluding use of a capacitive touchscreen may interact with, monitor, or manage the power controller device normally.

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Chandannagar, India

Amruta B Jamdade