NewElec’s MA RDU 216 panel-mounted keypad entry display unit can be used as a programming and display unit for the NewElec MA range of motor protection relays.
The MA RDU 216 permits the user to set all protection parameters and monitor the actual values while the motor is in operation. It also allows the user to view all fault alarms and realtime clock logged faults.
A security device connected in line with the serial communication cable is required in order to alter any settings, eliminating unauthorised alterations. If the dongle is not available, read only functions are tolerated by the device.
All functions are accessible via a membrane keypad, while the 2 x 16 backlit LCD display is used to indicate the menu-driven requested values. It is also used to prompt the operator to press the correct keys in the event of a multiple keystroke sequence.
The MA RDU 216 accommodates up to eight memory slots that are useful for storing information, even when the auxiliary power supply is removed, to allow the set-up parameters to be downloaded to the appropriate MA motor protection relay.
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