Specifications

SINAMICS G150
Drive converter cabinet units
75 kW to 1500 kW
3/7
Siemens D 11 · 2008
3
Function (continued)
Safety Integrated
Safe Torq ue O ff (STO ) Description of functions
This function prevents the drive from restarting unexpectedly in accordance with EN 6 0204-1, Section 5.4.
Safe Torque O ff disables the drive pulses and disconnects the power supply to the motor (corresponds to
Stop Category 0 of EN 6 0204-1). The drive is reliably torque-free. This state is monitored internally in the
drive.
Application, customer benefits
STO has the immediate effect that the drive cannot supply any torque-generating energy. STO can be
used wherever the drive will reach a standstill in a sufficiently short time based on the load or when coast-
ing down of the drive will not have any relevance for safety.
Safe Stop 1 (SS1) Description of functions
The Safe Stop 1 function can safely stop the drive in accordance with EN 6 0204-1, Stop Category 1. When
the SS1 function is selected, the drive brakes along a quick stop ramp (O FF3) and automatically activates
the Safe Torque O ff when the parameterized safety delay timer runs down.
Application, customer benefits
When the stop function is activated and it does not come to a halt quickly enough due to the load inertia,
it can be actively braked by the converter. This integrated quick braking function eliminates the need for
costly mechanical brakes that are subject to wear.
The Safety Integrated functions STO and SS1 of SINAMICS G150 are certified by independent institutes.
The appropriate external test certificates and manufacturer declarations are available from the Siemens
representatives, as well as at
http://support.automation.siemens.com/WW/view/en/23158850
Terminal module for controlling func-
tions STO and SS1 (option K8 2 )
The integrated safety functions, starting from the Safety Integrated (SI) input terminals of the SINAMICS
components (Control Unit, Power Module), satisfy the requirements specified in the Machinery Directive
9 8/37 /EC, EN 6 0204-1, DIN EN ISO 13849 -1 Category 3 (formerly EN 9 54-1) for Performance Level (PL) d
and IEC 6 1508 SIL2. These are certified by the BGIA. In combination with option K82, the safety functions
comply with Machinery Directive 9 8/37 /EC, EN 6 0204-1 and DIN EN ISO 13849 -1 Category 3
(formerly EN 9 54-1) for Performance Level (PL) d.
Power unit protection
Ground fault monitoring on the
output side
A ground fault on the output side is detected by aggregate current monitoring and results in shutdown in
grounded networks.
Electronic short-circuit protection
on output side
A short-circuit (e.g. on the converter output terminals, in the motor cable or in the motor’s terminal box) is
detected on the output side and the converter switches off with a fault.
Thermal overload protection A warning message is issued first when the overtemperature threshold responds. If the temperature rises
further, either a shutdown is carried out or an automatic influencing of the pulse frequency or output cur-
rent takes place so that a reduction in the thermal load is achieved. After elimination of the cause of the
fault (e.g. improvement in the ventilation), the original operating values are automatically resumed.
G_D211_XX_00210
t
v
STO
STO
G_D211_XX_00205
t
v
∆t
© Siemens AG 2008