SIEMENS
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Siemens D 31 N · March 2016
SINAMICS G120 standard inverters
0.37 kW to 250 kW (0.5 hp to 400 hp)
SINAMICS G120 standard inverters
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Overview
Safety Integrated
SINAMICS G120 standard inverters are available in different ver-
sions for safety-related applications. The PM240-2 und PM250
Power Modules are already designed for Safety Integrated.
PM240 Power Modules, frame size FSGX (i.e. 160 kW/250 hp
and higher) are approved only for the Basic Safety functions
(STO, SS1, and SBC). A drive can be combined with a Control
Unit with safety functions (see overview) in order to create a
Safety Integrated drive. The availability of Safety Integrated
functions depends on the type of Control Unit.
Basic Safety functions
(certified according to IEC 61508 SIL 2,
and EN ISO 13849-1 PL d and Category 3)
•
Safe Torque Off (STO)
to protect against active movement of the drive
•
The PM240-2 Power Modules, frame sizes FSD to FSF
additionally offer STO acc. to IEC 61508 SIL 3 and
EN ISO 13489-1 PL e and Category 3.
•
Safe Stop 1 (SS1)
for continuous monitoring of a safe braking ramp
•
Safe Brake Control (SBC) is used to safely control a holding
brake. When enabled, SBC is always activated at the same
time as STO. The Safe Brake Relay is used for SBC.
Extended Safety functions
(certified according to
IEC 61508 SIL 2 and EN ISO 13849-1 PL d and Category 3)
•
Safely Limited Speed (SLS)
for protection against dangerous movements on exceeding a
speed limit
•
Safe Direction (SDI)
This function ensures that the drive can only rotate in the
selected direction.
•
Safe Speed Monitoring (SSM)
This function signals if a drive operates below a specific
speed/feed velocity.
Basic Safety and Extended Safety functions can be activated via
PROFIsafe or by means of the safety inputs.
None of the safety functions require a motor encoder and they
are thus cheaper and easier to implement. Existing systems in
particular can be simply updated with safety technology without
the need to change the motor or mechanical system.
The Safe Torque Off (STO) function can be used without restric-
tion for all applications. The SS1, SLS, SSM and SDI functions
are only permissible for applications where the load can never
accelerate when the inverter is switched off. They are therefore
not permitted for applications involving pull-through loads such
as hoisting gear and unwinders.
Additional information is provided in chapter Highlights,
section Safety Integrated.
Efficient Infeed Technology
The innovative Efficient Infeed Technology is employed in
PM250 Power Modules. This technology allows the energy pro-
duced by motors operating in generator mode connected to
standard inverters to be fed back into the supply system. For
control cabinets, an additional temperature rise can be avoided
and the amount of space required can be reduced due to the
fact that components such as braking resistors, braking chop-
pers and line reactors can be eliminated. Further, wiring and
engineering costs are significantly reduced. At the same time,
energy consumption can be reduced and ongoing operating
costs noticeably reduced.
Additional information is provided in chapter Highlights,
section Efficient Infeed Technology.
Innovative cooling concept and varnishing of electronic
modules
The new cooling system and varnishing of the electronic
modules significantly increases the service life or useful life
of the device.
•
Disposal of all heat losses via an external heat sink
•
Consequential convection cooling of the Control Unit,
electronic modules are not located in the air duct
•
All cooling air from the fan is directed through the heat sink
Energy efficiency
Integrated technologies help when optimizing the energy usage
of the plant or system referred to the particular application:
•
Energy-efficient vector control with or without sensors
•
Automatic flux reduction with V/f ECO mode
•
Integrated energy saving computer
Additional information is provided in chapter Highlights,
section Energy efficiency.
Control Unit
Basic Safety functions
Extended Safety functions
STO
SS1
SBC
1)
SLS
SDI
SSM
CU230P-2
–
–
–
–
–
–
CU240B-2
–
–
–
–
–
–
CU240E-2
–
–
–
–
–
CU240E-2 F
–
2)
CU250S-2
3)
3)
3)
1)
The SBC function can be utilized only if a Safe Brake Relay is installed.
2)
SSM possible only for CU240E-2 DP-F / CU240E-2 PN-F Control Units
with PROFIsafe.
3)
With license for Extended Safety functions.
© Siemens AG 2016