Siemens SINAMICS G120C Function Manual

Application examples for the SLS function
Examples Possible solution
Setup mode: The machine operator must enter the
dangerous area of a machine and manually intro‐
duce material into a machine part.
● Select SLS in the inverter via a fail-safe
digital input or via PROFIsafe.
● The inverter limits and monitors the speed of
the machine part.
A turning machine must not exceed a specific maxi‐
mum torque in order to protect the drill chuck from
damage.
Functional expansion: selecting SLS levels
Expansion of the SLS function to include several SLS levels:
● The speed monitoring of the SLS function can be extended to include a maximum of 4
different SLS levels.
● The inverter requires additional safety-related signals to select an SLS level and to signal
back which SLS level is active.
It is only possible to select SLS levels via PROFIsafe.
The switchover from a higher SLS level 2 to a lower SLS level 1 is described as example in
the following.
Table 3-7 Switching over from SLS level 2 to SLS level 1
Safely Limited Speed (SLS) Standard inverter functions linked with
SLS
1. The inverter signals "SLS level 2 is active" via the
safety-related PROFIsafe communication.
The inverter limits the speed setpoint to
values below SLS level 2.
2. The inverter recognizes the selection of SLS level 1
via the safety-related PROFIsafe communication.
3. SLS allows a motor to reduce its possibly inadmissibly
high speed within a defined time – or to reduce it along
a defined braking ramp.
The inverter limits the speed setpoint to
values below SLS level 1.
If the motor rotates faster than the SLS
monitoring value, then the inverter brakes
the motor along the OFF3 ramp.
4. The inverter monitors the absolute actual speed
against SLS level 1.
The inverter signals "SLS level 1 is active" via the
safety-related PROFIsafe communication.
The inverter limits the speed setpoint to
values below SLS level 1.
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Description
3.7 An overview of the principle of operation of the safety functions
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
40 Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD

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