Overview
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Drive Based Safety Integrated provides integrated safety functions that support the implementation of highly effective personnel and machine protection.
The safety functions comply with the requirements of Category 3 as well as Performance Level PL d according to DIN EN ISO 13849‑1 and safety integrity level SIL 2 according to DIN EN 61508. Consequently, important functional safety requirements can be implemented easily and economically.
The functional scope includes, for example:
- Functions for safe monitoring of standstill
- Functions for safe monitoring of speed
Benefits
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- High degree of safety:
Full implementation of the safety functions in Category 3/SIL 2/PL d
- Outstanding flexibility:
Application of practical safety and operating concepts
- Faster commissioning:
Integrated safety functions
Application
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For the CNC axes of the SINUMERIK 828D, both the Safety Integrated basic functions (STO, SS1, SBC) and the extended Safety Integrated functions of SINAMICS can be used. The Safety Integrated basic functions are directly controlled via terminals. A SINAMICS S120 TM54F Terminal Module is required for controlling the extended Safety Integrated functions.
For simple positioning tasks, e.g. revolvers, loading systems or tool magazines that require no coordination with the CNC part program, it is possible to connect two auxiliary axes to the SINUMERIK 828D via the I/O interface based on PROFINET using a SINAMICS S120 CU310-2 PN or CU320-2 PN.
The Safety Integrated basic functions of the SINAMICS system can be utilized for these CNC auxiliary axes. The Safety Integrated basic functions are selected by hardware and in 2 channels via terminals on the CU310-2 PN/CU320-2 PN and the Motor Module.
A partially automated acceptance test is provided in SINUMERIK Operate for acceptance testing Safety Integrated functions. All measured data and traces are logged and can be printed out in an acceptance report.
Design
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We recommend the following safety relays for the configuration of the safe control logic for individual safety functions:
- SIRIUS 3SK safety relays for configuring a hardware circuit
- SIRIUS 3RK3 Modular Safety System for a graphically parameterizable solution
You will find further information about SIRIUS in SiePortal at:
sieportal.siemens.com
Mode of operation
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Clearly structured screen forms are provided in SINUMERIK Operate to assist with the commissioning of Safety Integrated functions.
Safety status information such as, for example, the name of the currently active Safety Integrated function, is transferred to the CNC via the safety info channel (SIC).
The NCK and drive can exchange signals in the opposite direction via the safety control channel (SCC) for the purpose of conducting the safe brake test, for example.
This solution significantly reduces the wiring outlay for the machine manufacturer.
Function
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The safety functions are available in all modes and can communicate with the process using safety-oriented input/output signals. They can be implemented for each individual axis and spindle.
The following Safety Integrated functions are available (terms in accordance with IEC 61800‑5‑2):
Safety Integrated basic functions (basic version):
- Safe Torque Off (STO)
Suppression of drive pulses, providing safe electronic interruption of the energy supply
- Safe Brake Control (SBC)
Safe brake control of holding brakes which are active in the de-energized state, e.g. motor holding brakes
- Safe Stop 1 (SS1) time-controlled
Safe shutdown of a drive, with subsequent transition into the STO state
The Safety Integrated basic functions are license-free.
The basic functions of Safety Integrated are activated via the terminals of the SINAMICS S120 Combi Power Modules or the SINAMICS S120 Motor Modules in booksize or booksize compact format and SINUMERIK 828D.
Extended Safety Integrated functions (option):
- Safe Torque Off (STO)
Suppression of drive pulses, providing safe electronic interruption of the energy supply
- Safe Stop 1 (SS1) time-controlled or speed-controlled
Safe shutdown of a drive, with subsequent transition into the STO state
- Safe Stop 2 (SS2)
Safe stopping of the drive with subsequent monitoring for standstill (SOS)
- Safe Operating Stop (SOS)
Monitors drives for standstill – the drives remain fully functional in the position control
- Safely-Limited Speed (SLS)
Monitoring of 4 configurable velocity limit values, e.g. during setup
- Safe Acceleration Monitor (SAM) / Safe Brake Ramp (SBR)
Safe monitoring of the braking process
- Safe Speed Monitor (SSM)
Safe checkback signal when a value falls below a settable speed limit, e.g. for enabling a protective door
- Safely-Limited Position (SLP)
Selectable traversing range limitation (2 ranges)
- Safe Direction (SDI)
Safe monitoring of the direction of motion
- Safe Brake Management (SBM)
- Safe Brake Control (SBC)
2-channel braking signal – integrated in the SINAMICS S120 Motor Module - Safe Brake Test (SBT) → diagnostic function
Cyclic brake test
The extended Safety Integrated functions require a software license in the form of a CNC option per axis/spindle with Safety functions. A SINAMICS TM54F Terminal Module is required for controlling the extended Safety Integrated functions.
Commissioning support:
- Graphical commissioning with SINUMERIK Operate
For each Safety function there is a clear, graphical display available for fast commissioning
- Integrated acceptance test with SINUMERIK Operate
Partially automated acceptance test for all safety-related functions. Simple operation of the test process, automatic configuration of trace functions and automatic generation of an acceptance record.
Integration
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- SINUMERIK 828D
- SINAMICS S120 Combi Power Module or SINAMICS S120 Motor Module in booksize or booksize compact format
- Motors with encoders that comply with the Safety Integrated specification: SIMOTICS M or SIMOTICS S motors
- Encoder system: If you require information about the use of suitable encoder systems with SINUMERIK Safety Integrated, contact your local Siemens office or regional company.
- Signal cables that comply with the SINAMICS S120 specification: MOTION-CONNECT connection systems
- Controlling the extended Safety Integrated functions: SINAMICS S120 TM54F Terminal Module
- CNC option with software license per axis/spindle with the extended Safety Integrated functions
- 3TK28, 3SK or 3RK3 safety relays
More information
