Omron SX-F Instruction Manual page 8

WARNINGS AND CAUTIONS
Precautions to be taken with a connected motor
If work must be carried out on a connected motor or on the driven machine, the mains voltage
must always be disconnected from the variable speed drive first. Wait at least 5 minutes before
starting work.
Short-circuits
The Inverter has high voltage parts inside which, if short-circuited, might cause damage to itself
or other property. Place covers on the openings or take other precautions to make sure that no
metal objects such as cutting bits or lead wire scraps go inside when installing and wiring.
Earth leakage current
This variable speed drive has an earth leakage current which does exceed 3.5 mA AC. There-
fore the minimum size of the protective earth conductor must comply with the local safety regula-
tions for high leakage current equipment which means that according the standard IEC61800-5-
1 the protective earth connection must be assured by one of following conditions:
1. PE conductor cross-sectional are shall for cable size  16mm
conductors, for cable size above 16mm
cross-sectional area shall be at least 16mm
sectional area should be at least 50% of the used phase conductor.
2. When the PE conductor in the used cable type is not in accordance with the above mentioned
cross-sectional area requirements, a separate PE conductor should be used to establish this.
Residual current device (RCD) compatibility
This product cause a DC current in the protective conductor. Where a residual current device
(RCD) is used for protection in case of direct or indirect contact, only a Type B RCD is allowed on
the supply side of this product. Use RCD of 300 mA minimum.
Voltage tests (Megger)
Do not carry out voltage tests (Megger) on the motor, before all the motor cables have been dis-
connected from the variable speed drive.
Precautions during Autoreset
When the automatic reset is active, the motor may restart automatically provided that the cause
of the trip has been removed. If necessary take the appropriate precautions.
Heat warning
Be aware of specific parts on the VSD having high temperature.
ing resistors and the motor, which may become too hot during the power supply and for some time after the
power shut-off. Doing so may result in a burn.
Do not Operate the inverter with wet hands
Do not operate the Digital Operator or switches with wet hands. Doing so may result in a serious
injury due to an electric shock.
Warning
The Brake Resistor must be connected between terminals DC+ and R.
Warning
In order to work safely, the mains earth must be connected to PE and the motor earth to
vi
2
2
but smaller or equal to 35mm
2
. For cables > 35mm
Do not touch the Inverter fins, brak-
Safety Instructions
be equal to the used phase
2
the PE conductor
2
the PE conductor cross-
.