Manual HM1016ER1 DescriptionHarsen® Page 1/541. DescriptionGU641B is a new generation Automatic Mains (Utility) Failure module for single Genset, which adoptsbran-new outline configuration, focus on the requirements of customers, and perfectly improves theperformance of controller. It fully meets the auto control requirements of different kinds of Genset foruser or special assembly factory.The module also monitors and protects the engine, indicating operational status, fault conditions andmetering on the front panel LCD and LED. True RMS measure of voltage and current. 2 analog inputs for kinds of optional built-in sensors, parameters also can be configured by user. More outputs of configurable auxiliary control relays. More configurable isolated digital inputs. Buttons on control panel are used for selecting control modes, starting and stopping the operatingprocedure, displaying data and modifying the parameters. LED indicators are used for indicatingthe operation mode of controller and the running status of Genset, and LCD displays eachmeasuring parameter and status. Flexible equipped with RS485, RS232 and USB, realizing remote monitor; or communicated withPC, fully realizing functions of remote signaling, telemetering and remote control, can read and setthe running parameters of controller. All connections of the controller are by secure plug and socket, for ease and convenience to connect,move, maintain and replace the device.This manual is only suitable for GU641B Automatic control module, user must carefully readthis manual first.