Bucher EMD G 0 Series, Hardware Manual

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Safety instructions
Residual hazards
2
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300−I−9052003−EN−04/07.2021
2.2 Residual hazards
Protection of persons
ƒ
Switch off the high voltage on−board voltage completely before working on the
devices.
ƒ
Before working on the device, check whether all power terminals are deenergised
because
– after disconnection, the power terminals U, V and W remain live for at least 5
minutes depending on the system.
– the power terUG, −UG, U, V and W remain live while the motor is rotating.
– Batteries and energy storages can carry hazardous voltage over a longer period of
time.
Device protection
ƒ
Connect or disconnect all pluggable connection terminals only in de−energized state!
ƒ
Only disconnect the inverters from the installation, e.g. from the motor or the
mounting wall, in a de−energized state!
ƒ
Close all unused connectors with protective caps or blind plugs.
Motor protection
ƒ
With certain inverter settings, the connected motor may overheat:
– E.g. longer operation of the DC−injection brake.
– Longer operation of self−ventilated motors at low speeds.
– Incorrect frequency or voltage settings in the motor parameters (especially for 120
Hz motors).
Protection of the machine/plant
ƒ
Drives can reach dangerous overspeeds (e.g. setting of high output frequencies with
unsuitable motors and machines):
– The inverters offer no protection against such operating conditions. Use additional
components for this purpose.
Symbol Description
Þ
Long discharge time : All power terminals remain live for a few minutes after mains disconnection!
The duration is given under the warning symbol on the device.
}
High leakage current : Carry out fixed installation and PE connection according to EN 6180051!
'
Electrostatic sensitive devices : Before working on the device, the personnel must be free of
electrostatic charge!
|
Hot surface : Risk of burns! Hot surfaces should not be touched without wearing protective gloves.
}
¶
Read the documentation : Before working on the device, the personnel must read and act in
accordance with the documentation supplied with the product, especially the warnings and the
safety instructions!
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Dangerous voltage : Before working on the device, switch off the HV on−board voltage completely!