Danfoss VLT AQUA High Power Operating Instructions Manual

Also see for vlt aqua: Instructions Design guide Instruction manual Operating instructions Design guide

Contents

2. Safety2.1.1. Safety noteThe voltage of the frequency converter is dangerous whenever connected to mains.Incorrect installation of the motor, frequency converter or fieldbus may cause dam-age to the equipment, serious personal injury or death. Consequently, the instruc-tions in this manual, as well as national and local rules and safety regulations, mustbe complied with.Safety Regulations1. The frequency converter must be disconnected from mains if repair work is to be carriedout. Check that the mains supply has been disconnected and that the necessary time haspassed before removing motor and mains plugs.2. The [STOP/RESET] key on the control panel of the frequency converter does not dis-connect the equipment from mains and is thus not to be used as a safety switch.3. Correct protective earthing of the equipment must be established, the user must be pro-tected against supply voltage, and the motor must be protected against overload inaccordance with applicable national and local regulations.4. The earth leakage currents are higher than 3.5 mA.5. Protection against motor overload is set by par. 1-90Motor Thermal Protection. If thisfunction is desired, set par. 1-90 to data value [ETR trip] (default value) or data value[ETR warning]. Note: The function is initialised at 1.16 x rated motor current and ratedmotor frequency. For the North American market: The ETR functions provide class 20motor overload protection in accordance with NEC.6. Do not remove the plugs for the motor and mains supply while the frequency converteris connected to mains. Check that the mains supply has been disconnected and that thenecessary time has passed before removing motor and mains plugs.7. Please note that the frequency converter has voltage inputs other than L1, L2 and L3,when load sharing (linking of DC intermediate circuit) and external 24 V DC have beeninstalled. Check that all voltage inputs have been disconnected and that the necessarytime has passed before commencing repair work.Installation at High AltitudesBy altitudes above 2 km, please contact Danfoss Drives regarding PELV.Warning against Unintended Start1. The motor can be brought to a stop by means of digital commands, bus commands, referencesor a local stop, while the frequency converter is connected to mains. If personal safety consider-ations make it necessary to ensure that no unintended start occurs, these stop functions are notsufficient. 2. While parameters are being changed, the motor may start. Consequently, the stopkey [STOP/RESET] must always be activated; following which data can be modified. 3. A motorthat has been stopped may start if faults occur in the electronics of the frequency converter, or ifa temporary overload or a fault in the supply mains or the motor connection ceases.Warning:Touching the electrical parts may be fatal - even after the equipment has been dis-connected from mains.VLT AQUA High Power Operation Instructions 2. SafetyMG.20.P1.02 - VLT ® is a registered Danfoss trademark 72