General Warning; Safety Regulations; Warning Against Unintended Start - Danfoss VLT MICRO Manual Del Usuario

VLT ® MICRO

General warning

The voltage of the frequency converter is dangerous whenever the
converter is connected to mains. Incorrect fitting of the motor or
frequency converter may cause damage to quently, it is essential to
comply with the instructions in this manual as well as local and national
rules and safety regulations.

Safety regulations

1. The frequency converter must be disconnected from the mains if repair work is to be
carried out. Check that the mains supply has been disconnected and that the
necessary time has passed before removing mains plugs.
2. The (STOP/RESET) on the control panel of the frequency
converter does not disconnect 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
protected against supply voltage, and the motor must be protected against overload
in accordance with applicable national and local regulations.
4. The earth leakage currents are higher than 3.5 mA.
5. Do not remove the plugs for the motor and mains supply while the frequency
converter is connected to mains. Check that the mains supply has been
disconnected and that the necessary time has passed before removing motor and
mains plugs.

Warning against unintended start

1. The motor can be brought to a stop by means of digital
commands, references or a local stop, while the frequency converter is connected to
mains. If personal safety considerations make it necessary to ensure that no
unintended start occurs, these stop functions are not sufficient.
2. While parameters are being changed, the motor may start. Consequently, the stop
key (STOP/RESET) must always be activated, flollowing which data can be modified.
3. A motor that has been stopped may start if faults occur in the electronics of the
frequency converter, or if a temporary overload or a fault in the supply mains or the
motor connection.
commands, bus
3