Siemens SINAMICS G120 Hardware Installation Manual page 16

Safety notes
Cable connection
The control cables must be laid separately from the power cables. Carry out the
connections as shown in the installation section in this manual, to prevent inductive and
capacitive interference from affecting the correct function of the system.
Mechanical Installation
To ensure the safe operation of the equipment, it must be installed and commissioned by
qualified personnel in full compliance with the warnings laid down in this manual.
Take particular note of the general and regional installation and safety regulations
regarding work on dangerous voltage installation (e.g. EN 61800-5-1) as well as the
relevant regulations regarding the correct use of tools and personal protective equipment
(PPE).
Electrical Installation
Power and motor connections
A fixed location, non varying connection is necessary because of a leakage current
> 3.5 mA.
The inverter must always be grounded. If it is not grounded correctly, extremely dangerous
conditions may arise which could prove potentially fatal.
Isolate the mains electrical supply before making or changing connections to the unit.
The terminals of the Inverter can carry dangerous voltages even if the inverter is
inoperative. Wait at least 5 minutes to allow the unit to discharge after switching off the line
supply before carrying out any installation work.
When connecting the line supply to the inverter, make sure that the terminal case of the
motor is closed.
When changing from the ON to OFF-state of an operation if an LED or other similar display
is not lit or active; this does not indicate that the unit is switched-off or powered-down.
Ensure that the inverter is configured for the correct supply voltage – it must not be
connected to a higher voltage supply.
Filtered drives can only be used on power systems with grounded starpoint.
16
CAUTION
WARNING
WARNING
WARNING
Hardware Installation Manual, 07/2009, A5E00807525B AD
Power Module PM240