Error and Warning Messages58 M-Max Series Adjustable Frequency Drive MN04020003E—October 2013 www.eaton.comList of Fault Messages (F) and Warning Messages (AL), continuedDisplay Designation Possible Cause Instructions50 Live zero error(analog input)Monitored zero pointCurrent less than 4 mA, voltage less than 2VSignal cable interruptedThe signal source is faultyCheck the analog setpoint circuit and current and voltagesource (see parameter P2.1, P2.5, P8.1, P8.10)51 External fault Error message at a digital input (DI1–DI6),programmed as input for an external errormessageCheck the programming (P3.5, P3.6) and check the deviceindicated by the error messageCheck the cabling for the respective device as well53 Fieldbus error The communication link between the masterdevice and the drive's fieldbus has beeninterruptedCheck the installationFurther notes are provided in the manual of the optionalfieldbus interface (CANopen, PROFIBUS DP, and so on)If the installation is okay, contact your local representative54 Fieldbus interfaceerrorMMX-NET-XA mounting frame for fieldbusinterface cards is not connected to the frequencyinverterOptional fieldbus interface is not fittedError message with activated fieldbus connection of theinterface between the frequency inverter and the mountingframe (MMX-NET-XA)Error message as per P8.15Further notes are provided in the optional fieldbus interfacemanual (CANopen, PROFIBUS DP, and so on)
