SIEMENS
SINAMICS G150 NEMA
Engineering information
4
Siemens D11.7
(Part 1) – 2013
Safety integrated
Safety Basic Functions and Safety Extended Functions
The Safety Integrated functions of the SINAMICS drive
system are subdivided into what are known as Safety Basic
Functions and Safety Extended Functions (terminology
according to IEC 61800-5-2):
• Basic Functions
- Safe Torque Off (STO)
- Safe Stop 1 (SS1, time-controlled)
- Safe Brake Control (SBC)
The Safety Basic functions are included in the standard
scope of delivery of the drive firmware and can be used
without requiring any additional license. The user can
activate these functions at any time. An encoder is not
required for their use. However, for the Safe Brake Control
(SBC) function a Safe Brake Adapter (SBA) is required for
chassis format Motor Modules.
The Safety Basic Functions are controlled as follows:
- Via terminals at the Control Unit and at the power unit,
wired to a terminal interface in Cabinet Modules (option
K82
) and on the Safe Brake Adapter (option
K88
),
when applicable.
- Via PROFIBUS or PROFINET with PROFIsafe profile (from
version 3 (last position of the Order No. ≥ 3) and Drives
SW Version V2.6 SP2)
• Extended Functions
- Safe Torque Off (STO)
- Safe Stop 1 (SS1, time-controlled and acceleration
controlled)
- Safely-Limited Speed (SLS)
- Safe Speed Monitor (SSM)
- Safe Direction (SDI)
Safety Extended Functions require a safety license
(option
K01
). Depending on the control, additional
DRIVE-CLiQ components are required.
Note: For SINAMICS G150, Extended Safety Functions
require two incremental encoders (TTL, HTL or SSI) and
therefore two SMC30 Sensor Module Cabinet-Mounted to
evaluate the encoder signals (options
K50
and
K52
).
The Safety Extended Functions are controlled as follows:
- Via the TM54F Terminal Module (option
K87
)
- Via PROFIBUS or PROFINET with the PROFIsafe profile
Extended Functions are available for SINAMICS G150 from
version 3 (last position of the Order No. ≥ 3).
The Safety Integrated functions currently available in
SINAMICS G150 are described in more detail below
(terms as defined in IEC 61800-5-2):
Safe Torque Off (STO)
Function description
This function prevents unexpected starting according to
IEC 60204-1 Section 5.4. Safe Torque Off disables the
control of the power unit, preventing a potentially hazardous
torque (corresponds to Stop Category 0 according to IEC
60204-1). The drive is reliably torque-free. This state is
monitored internally in the drive.
Under Extended Functions, STO can also be controlled via
the TM54F Terminal Module or PROFIsafe.
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 naturally reach a standstill due to load torque
or friction in a sufficiently short time or when “coasting
down” of the drive will not have any relevance for safety.
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