Siemens SINAMICS G120C User Manual

Fundamental safety instructions
1
1.1 General safety instructions
WARNING
Electric shock and danger to life due to other energy sources
Touching live components can result in death or severe injury.
• Only work on electrical devices when you are quali󹪝ed for this job.
• Always observe the country-speci󹪝c safety rules.
Generally, the following steps apply when establishing safety:
1. Prepare for disconnection. Notify all those who will be a󹪜ected by the procedure.
2. Isolate the drive system from the power supply and take measures to prevent it being
switched back on again.
3. Wait until the discharge time speci󹪝ed on the warning labels has elapsed.
4. Check that there is no voltage between any of the power connections, and between any of
the power connections and the protective conductor connection.
5. Check whether the existing auxiliary supply circuits are de-energized.
6. Ensure that the motors cannot move.
7. Identify all other dangerous energy sources, e.g. compressed air, hydraulic systems, or
water. Switch the energy sources to a safe state.
8. Check that the correct drive system is completely locked.
After you have completed the work, restore the operational readiness in the inverse sequence.
WARNING
Risk of electric shock and 󹪝re from supply networks with an excessively high impedance
Excessively low short-circuit currents can lead to the protective devices not tripping or tripping
too late, and thus causing electric shock or a 󹪝re.
• In the case of a conductor-conductor or conductor-ground short-circuit, ensure that the
short-circuit current at the point where the converter is connected to the line supply at least
meets the minimum requirements for the response of the protective device used.
• You must use an additional residual-current device (RCD) if a conductor-ground short circuit
does not reach the short-circuit current required for the protective device to respond. The
required short-circuit current can be too low, especially for TT supply systems.
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 13

Siemens SINAMICS G120C Specifications

General

Communication Interfaces	PROFINET, PROFIBUS, USS, Modbus RTU
Protection Class	IP20
Ambient Temperature	-10°C to +50°C
Storage Temperature	-40°C to +70°C
Power Range	0.55 kW to 132 kW
Voltage Range	380 V to 480 V
Output Voltage	0 V to Supply Voltage
Frequency Range	0 Hz to rated output frequency
Control Modes	Vector control with encoder
Protection	Overload, overvoltage, undervoltage, short circuit, ground fault
Relative Humidity	5% to 95%, non-condensing
Altitude	Up to 2000 m without derating