Protection against motor overload is not included in the factory setting. If this function is desired, set par. F-10 Electronic Overload to data value Elec.

OL trip 1 [4] or data value Elec. OL warning 1 [3].

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 elapsed before removing motor and mains plugs.

Please note that the frequency converter has more voltage sources than L1, L2 and L3, when load sharing (linking of DC intermediate circuit) or external

24 V DC are installed. Check that all voltage sources have been disconnected and that the necessary time has elapsed before commencing repair work.

Warning against unintended start

The motor can be brought to a stop by means of digital commands, bus commands, references or a local stop, while the frequency converter is connected

to mains. If personal safety considerations (e.g. risk of personal injury caused by contact with moving machine parts following an unintentional start)

make it necessary to ensure that no unintended start occurs, these stop functions are not sufficient. In such cases the mains supply must be disconnected

or the Safe Stop function must be activated.

The motor may start while setting the parameters. If this means that personal safety may be compromised (e.g. personal injury caused by contact with

moving machine parts), motor starting must be prevented, for instance by use of the Safe Stop function or secure disconnection of the motor connection.

A motor that has been stopped with the mains supply connected, may start if faults occur in the electronics of the frequency converter, through temporary

overload or if a fault in the power supply grid or motor connection is remedied. If unintended start must be prevented for personal safety reasons (e.g.

risk of injury caused by contact with moving machine parts), the normal stop functions of the frequency converter are not sufficient. In such cases the

mains supply must be disconnected or the Safe Stop function must be activated.

NB!

When using the Safe Stop function, always follow the instructions in the Safe Stop section of the AF-650 GP Design Guide.

Control signals from, or internally within, the frequency converter may in rare cases be activated in error, be delayed or fail to occur entirely. When used

in situations where safety is critical, e.g. when controlling the electromagnetic brake function of a hoist application, these control signals must not be

relied on exclusively.

and I

RMS

for the same kW performance.

RMS

x U x I

cos

Power factor

x U x I RMS

x cos

ϕ1

since cos