北京西门子802S数控系统代理商

北京西门子802S数控系统代理商Activation of the Safety Integrated FunctionsThe safety functions for SINAMICS drives can be activated via terminals, e.g. for use of a conventional safety circuit.For standalone safety solutions for small to medium-sized applications, it is frequently sufficient that the various sensing components are directly hardwired to the drive.For integrated safety solutions, the safety-relevant sequences are generally processed and coordinated in the fail-safe SIMATIC controller. Here, the system components communicate via the PROFINET or PROFIBUS fieldbus. The safety functions are controlled via the safe PROFIsafe communication protocol.SINAMICS drives can be easily integrated into the plant or system topology.PROFIsafe北京西门子802S数控系统代理商SINAMICS drives support the PROFIsafe profile based on PROFINET as well as on PROFIBUS.PROFIsafe is an open communications standard that supports standard and safety-related communication over the same communication path (wired or wireless). A second, separate bus system is therefore not necessary. The telegrams that are sent are continually monitored to ensure safety-relevant communication.Possible errors such as telegrams that have been lost, repeated or received in the incorrect sequence are avoided. This is done by consecutively numbering the telegrams in a safety-relevant fashion, monitoring their reception within a defined time and transferring an ID for transmitter and receiver of a telegram. A CRC (cyclic redundancy check) data security mechanism is also used.北京西门子802S数控系统代理商The operating principle of Safety IntegratedTwo independent switch-off signal pathsTwo independent switch-off signal paths are available. All switch-off signal paths are low active. This ensures that the system is always switched to a safe state if a component fails or in the event of cable breakage. If a fault is discovered in the switch-off signal paths, the STO or SS1 function (depending on parameter settings) is activated and a system restart inhibited.Two-channel monitoring structure北京西门子802S数控系统代理商All the main hardware and software functions for Safety Integrated are implemented in two independent monitoring channels (e.g. switch-off signal paths, data management, data comparison). A cyclic crosswise comparison of the safety-relevant data in the two monitoring channels is carried out.The monitoring functions in each monitoring channel work on the principle that a defined state must prevail before each action is carried out and a specific acknowledgement must be made after each action. If these expectations of a monitoring channel are not fulfilled, the drive coasts to a standstill (two channel) and an appropriate message is output.Forced dormant error detection using test stop北京西门子802S数控系统代理商The functions and switch-off signal paths must be tested at least once within a defined time in order to meet requirements as per EN ISO 13849-1 and IEC 61508 in terms of timely fault detection. This must be implemented either in cyclic manual mode or the test stop must be automatically initiated as part of the process. The test stop cycle is monitored, and after a specific time has been exceeded, an alarm is output. A test stop does not require a POWER ON. The acknowledgment is set by canceling the test stop request.Examples of when forced dormant error detection must be performed:When the drives are at a standstill after the system has been switched onBefore the protective door is openedAt defined intervals (e.g. every 8 hours)In automatic mode, time and event-drivenSafe speed/position sensing without/with encoderSafe actual value sensing without encoderA drive monitor with encoder is necessary for operation of a series of safety functions.For applications with encoderless mode or with encoders that have no safety capability, the safety functions can also be implemented without encoder. It is not possible to use all safety functions in this case.In operation without encoder, the actual speed values are calculated from the measured electrical actual values. This means that speed monitoring is also possible during operation without an encoder.Safe actual value sensing with encoder北京西门子802S数控系统代理商Incremental encoders or absolute encoders can be used for safe sensing of the position values on a drive.Safe actual value sensing relies on redundant evaluation of the incremental tracks A/B that supply sin/cos signals of 1 Vpp. Only encoders of the type whose A/B track signals are created and processed using purely analog techniques can be used.HTL/TTL incremental encoders may also be used. In this case, safe actual value sensing is achieved by using two independent encoders. The minimum possible speed resolution must also be taken into account.The encoder signals are input via Sensor Modules.As an alternative, motors with an integrated DRIVE-CLiQ interface can be used. The speed or position actual values are generated directly in the motor as safe values and are transferred to the Control Unit over safe communication via DRIVE-CLiQ.Certified built-on rotary encoders with DRIVE-CLiQ interface may also be used (seehttps://support.industry.siemens.com/cs/document/65402168).The encoder must be mechanically attached in such a manner that the encoder shaft is unable to unplug or slide off. For notes on this, see IEC 61800-5-2: 2016, Table D.16.A list of Siemens motors that fulfill the electrical and mechanical requirements is available at:https://support.industry.siemens.com/cs/document/33512621The following can be used for safe speed/position sensing:Single-encoder systems or北京西门子802S数控系统代理商Dual-encoder systemsSingle-encoder systemExample: Single-encoder system北京西门子802S数控系统代理商In a single-encoder system, the motor encoder is used exclusively for safe actual value sensing.Dual-encoder systemExample: Dual-encoder systemIn the case of the dual-encoder system, the safe actual values for a drive are provided by two separate encoders. The actual values are transferred to the Control Unit over DRIVE-CLiQ. When motors without a DRIVE-CLiQ connection are used, a Sensor Module must be provided.北京西门子802S数控系统代理商HTL/TTL incremental encoders can be used as an alternative with a dual-encoder system. Either two HTL/TTL encoders, one dual-HTL/TTL encoder or one HTL/TTL encoder and one sin/cos encoder can be used.The safety functions are listed below with criteria for actual value sensing: FunctionsAbbreviationWith encoderWithout encoderDescriptionBasic FunctionsSafe Torque OffSTOYesSafe Stop 1SS1Yes 1)Safe stopping process in accordance with stop category 1Safe Brake ControlSBCSafe Brake ControlExtended FunctionsSafe Operating StopSOSNoSafe monitoring of the standstill positionSafe Stop 2SS2Safe stopping process in accordance with stop category 2Safely-Limited SpeedSLSSafe monitoring of the maximum speedSafe Speed MonitorSSMSafe monitoring of the minimum speedSafe DirectionSDISafe monitoring of the direction of motionSafely-Limited AccelerationSLASafely-Limited AccelerationSafe Brake TestSBTDiagnostic function for safe testing of the required holding torque of a brakeAdvanced FunctionsSafely-Limited PositionSLPSafe PositionSPYes 2)Safe transfer of position valuesSafe CamSCASafe cams1) The use of this safety function without encoder is permitted with asynchronous (induction) motors, synchronous motors from the SIEMOSYN series, or with SIMOTICS reluctance motors.2) Only for the transmission of relative position values. An encoder is required to transmit absolute position values.集成The safety functions integrated in SINAMICS drives, including SIMATIC ET 200pro FC-2 frequency converters, are listed below.Safety IntegratedLow voltage Standard Performance frequency convertersDistributed frequency convertersSINAMICSSINAMICSSIMATICV20G120CG120G130G150G115D wall and motor-mountedG120DET 200pro FC-2 6) CU230P-2CU240E-2CU250S-2CU320-2CU240D-2CU250D-2FunctionsSTO–✓ –SS1✓ 1)SS2SOSSBCSBTSLS✓ 2)SSMSDISLASLP✓ 3)SPSCAControlPROFIsafeF-DIApplicationTailor-made safety concepts can be created using the SP function. It is ideal for use on machines that require flexible safety functions. It is extremely versatile and can be used, for example, to implement safe, axis-specific range detection by means of safe cams. The SP function can also be used to implement multi-axis safety concepts, multi-dimensional protection areas and zone concepts.Customer benefits北京西门子802S数控系统代理商Position monitoring or speed monitoring is implemented in the safety program of the control, so the user has the flexibility for implementing tailor-made safety functions. The reaction to a limit overshoot must also be specified in the safety program. This means a higher initial programming outlay, but it does offer the opportunity for initiating different fault reactions depending on the situation.Safe Cam (SCA)The SCA function enables safety-related monitoring of the position.EffectThe SCA function outputs a safe signal if the drive is within a specified position range. It facilitates the realization of safe axis-specific range detection. Up to 30 safe cams can be parameterized per axis.ApplicationIt is only permissible that a protective door is opened if a drive is in a certain position range. The drive may only be traversed with reduced speed when it is located in a certain position range.北京西门子802S数控系统代理商Customer benefitsThe function enables safety-related switchover of safety functions. With SCA, safe electronic cam controllers can be implemented without additional hardware. With SCA, work and protection zone delimitations are reliably detected.Basic Functions, Extended Functions, and Advanced FunctionsWith SINAMICS G converters, the safety functions are basically implemented without encoders.With SINAMICS S drives, the safety functions are implemented with encoders – individual safety functions can also be operated without encoders.The Safety Integrated Functions are grouped into Basic Functions, Extended Functions, and Advanced Functions.The Basic Functions are included in the standard scope of supply.The Extended Functions must be activated by a license 1). The Advanced Functions for SINAMICS S120 must also be activated via a license.The electronic Certificate of License is the paperless delivery form for runtime options for SINAMICS and contains information about the type of rights of use purchased for the software.北京西门子802S数控系统代理商