M-Max Series Adjustable Frequency DriveM-Max Series Adjustable Frequency Drive MN04020003E—October 2013 www.eaton.com xiDefinitions and SymbolsWARNINGThis symbol indicates high voltage. It calls yourattention to items or operations that could be dangerousto you and other persons operating this equipment.Read the message and follow the instructions carefully.This symbol is the “Safety Alert Symbol.” It occurs witheither of two signal words: CAUTION or WARNING, asdescribed below.WARNINGIndicates a potentially hazardous situation which, if notavoided, can result in serious injury or death.CAUTIONIndicates a potentially hazardous situation which, if notavoided, can result in minor to moderate injury, or seriousdamage to the product. The situation described in theCAUTION may, if not avoided, lead to serious results.Important safety measures are described in CAUTION (aswell as WARNING).Hazardous High VoltageWARNINGMotor control equipment and electronic controllers areconnected to hazardous line voltages. When servicingdrives and electronic controllers, there may be exposedcomponents with housings or protrusions at or aboveline potential. Extreme care should be taken to protectagainst shock.Stand on an insulating pad and make it a habit to use onlyone hand when checking components. Always work withanother person in case an emergency occurs. Disconnectpower before checking controllers or performingmaintenance. Be sure equipment is properly grounded. Wearsafety glasses whenever working on electronic controllers orrotating machinery.Warnings and CautionsCAUTIONWhen selecting the cable cross-section, take the voltagedrop under load conditions into account.The consideration of other standards (for example, VDE 0113or VDE 0289) is the responsibility of the user.CAUTIONThe specified minimum PE conductor cross-sections(EN 50178, VDE 0160) must be maintained.WARNINGWith frequency inverters, only AC/DC sensitive residualcurrent circuit breakers (RCD type B) are to be used(EN 50178, IEC 755).CAUTIONDebounced inputs may not be used in the safety circuitdiagram.Residual current circuit breakers (RCD) are only to beinstalled between the AC power supply network and thefrequency inverter.CAUTIONDebounced inputs may not be used in the safety circuitdiagram.If you are connecting multiple motors on one frequencyinverter, you must design the contactors for the individualmotors according to utilization category AC-3.Selecting the motor contactor is done according to the ratedoperational current of the motor to be connected.CAUTIONDebounced inputs may not be used in the safety circuitdiagram.A changeover between the frequency inverter and the inputsupply must take place in a voltage-free state.
