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SE-Power FS STO-manual vers. 1.6 en.12.08.2015

 

19

 

The  power  supply  to  the  drive  is  reliably  disconnected  via  the  active  safety  function  STO 
“Safe Torque Off”. The drive cannot generate torque and so cannot perform any hazardous 
movements.  With  suspended  loads  or  other  external  forces,  additional  measures  must  be 
taken to reliably prevent sagging (e.g. mechanical holding brake). In the STO “Safe Torque 
Off” state, the standstill position is not monitored. 

The  machine  must  be  stopped  in  a  safe  manner,  e.g.  via  a  safety  switching  device.  This 
applies  specifically  to  vertical  axes  without  self-locking  mechanism,  clamping  unit  or 
counterbalance. 

 

 

Note 

There is a risk that the drive will advance in case of multiple errors in the SE-Power 
FS. 

If the output stage of the servo drive fails while in the STO status (simultaneous 
short circuit of 2 power semiconductors in different phases), a limited dwell 
movement of the rotor may result. The rotation angle / path correspond to a pole 
pitch. Examples: 

 

Rotary axis, synchronous machine, 8-pin 

 

movement < 45° at the motor shaft

 

Linear motor, poles pitch 20 mm 

 movement < 20 mm at the moving part. 

 

4.2.2

 

Overview of interface [X40] 

On its front, the safety module provides an 8-pin connection [X40] for control ports, feedback 
contact and a 24 V auxiliary supply for external sensors 

 

Section 5.2

. 

The safety function STO is requested solely via the two digital control ports STO-A and STO-
B. A safety circuit for additional interfaces at the SE-Power servo drive is neither required nor 
intended 

 

 

Cross-circuit detection in the input circuit is not carried out by the safety module. 

 

The status of the servo drive is reported back to an external safety switching device through 
a  potential-free  acknowledgment  contact  (normally  open).  This  enables  downwards-
compatible activation in a mixed configuration, comprising an SE-Power (previous series with 
the  “Safe  Stop”  function  to  be  realised  via  the  connection  [X3])  and  the  SE-Power  FS 

 

Section 8.3

. 

The interface [X40] permits the direct connection of active and passive sensors, since a 24 V 
supply voltage (auxiliary supply) with corresponding reference potential is lead out. 

 

 

Содержание SE-Power FS

Страница 1: ...Servo Controller SE Power FS STO Manual Complementary document to the Operating Instruction Copyright by Afag Automation AG Translation English ...

Страница 2: ... Product description SE Power Safety Module STO 15 4 1 Product overview 15 4 1 1 Purpose 15 4 1 2 Supported devices 15 4 1 3 Control sections and connections 16 4 2 Function and application 17 4 2 1 Description of the safety function STO 18 4 2 2 Overview of interface X40 19 4 2 3 Control ports STO A 0V A STO B 0V B X40 20 4 2 4 Feedback contact C1 C2 X40 21 4 2 5 Auxiliary supply 24V 0V X40 22 4 ...

Страница 3: ... state machine 41 6 3 3 Window Safety module 41 6 4 Function test validation 44 7 Operation 46 7 1 Obligations of the operator 46 7 2 Maintenance and care 46 7 3 Protective functions 46 7 3 1 Voltage monitoring 46 7 3 2 Protection against overvoltage and reverse polarity 46 7 4 Diagnostics and troubleshooting 47 7 4 1 Status indicators 47 7 4 2 Error messages 47 8 Conversion and module replacement...

Страница 4: ...4 SE Power FS STO manual vers 1 6 en 12 08 2015 9 1 Technical data 52 9 1 1 Safety engineering 52 9 1 2 General 53 9 1 3 Operating and environmental conditions 54 9 1 4 Elektrical data 55 10 Glossary 58 ...

Страница 5: ...h restart 26 Figure 5 Time behaviour when activating the safety function SS1 external switching with restart 28 Figure 6 Mounting Dismounting 31 Figure 7 Connection of the SE Power FS Safety Modul STO example of single phase servo drive SE Power FS 34 Figure 8 Typical circuit Decelerate and safe torque off SS1 Safe Stop 1 example single phase servo drive SE Power FS 36 Figure 9 Indication of the t...

Страница 6: ...y on the safety module 47 Table 12 Seven segment display on the servo drive 47 Table 13 Error messages relating to the safety module 48 Table 14 Technical data Safety indicators 52 Table 15 Technical data Safety specifications 52 Table 16 Technical data Mechanical 53 Table 17 Technical data Certifications 53 Table 18 Technical data Transport 54 Table 19 Technical data Storage 54 Table 20 Technical...

Страница 7: ...he operating instructions it alone is not sufficient to carry out installation and commissioning of the device Please pay attention to the notes in 1 1 Documentation The information s in this manual refers to the following hardware variants and Firmware versions of the servo positioning controller SE Power and the version of the Parameterization program Afag SE Commander Firmware from version 4 0 ...

Страница 8: ...ll means before installation and start up of all devices of the SE Power FS series Complementary documents to the operating manual present documentation description SE Power FS mounting instructions This manual is included during delivery of the SE Power FS devices and provides an extract from the manual represents the installation instructions contained therein make sure that they can easily oper...

Страница 9: ...e CoE CANopen over EtherCAT protocol the technical data and the device functionality installation and operation of the fieldbus module SE Power EtherCAT Interface SE Power FS programming example Siemens S7 V5 5 Description of the configuration and program from the programming example for Siemens S7 V5 5 SE Power FS programming example Siemens S7 TIA V12 Description of the configuration and program...

Страница 10: ...formation and notes Caution No observance may result in severe property damages DANGER No observance may result in property damages and in personal injuries Caution Life threatening voltages The safety instruction contains a pointer to the occurrence of a possibly life threatening voltage ...

Страница 11: ...ction conditions can lead to loss of the safety function Observe the specified environmental and connection conditions in particular the input voltage tolerances Technical data Appendix 9 1 Note Incorrect handling can damage the safety module or the servo drive Before mounting and installation work switch off the supply voltage Switch on the supply voltage only when the mounting and installation w...

Страница 12: ...Safety Modules SE Power FS Safety Module can be operated in all servo drives of the product family SE Power FS Those are equipped with the slot for safety modules FSM slot The safety modules cannot be inserted into one of the extension slots for technology modules TECH1 or TECH2 Note Bei Schäden die aus unbefugten Eingriffen oder nicht bestimmungsgemäßer Verwendung entstehen erlischt der Gewährlei...

Страница 13: ...t will be used Ensure compliance with specifications in the documentation at all times Also take into account the documentation for the other components and modules e g servo drive lines etc Take into account the legal regulations applicable to the destination as well as regulations and standards regulations of the testing organisations and insurers national specifications For emergency stop appli...

Страница 14: ...e implemented diagnostic measures If a potentially hazardous disturbance is recognised during diagnosis appropriate measures for maintaining the safety level must be implemented Note Check whether cross circuit detection of the input circuit and the connection wiring is required in your application If needed use a safety switching device with horizontal cross circuit detection to activate the safe...

Страница 15: ...ctions Planning and installation complexity is reduced The use of integrated functional safety technology increases machine functionality and availability over the levels achieved by conventional safety technology Type Description Safety Module STO FSM 2 0 STO Safety module with STO function and DIP switches Safety Module MOV FSM 2 0 MOV Safety module with the safety functions STO SS1 SS2 SOS SBC ...

Страница 16: ...play components 1 Servo drive SE Power FS with slot for a Functional Safety Module 2 Digital I O interface X40 for control of the STO function 3 Pin 1 of the interface X40 4 LED for status display functional safety status 5 DIP switch activation configuration of the fieldbus communication in the servo drive Figure 1 Operator panel and connections SE Power FS Safety Module STO ...

Страница 17: ... Torque Off STO function Potential free feedback contact for the operating status Designed as a plug in module that can be plugged in from the outside thus enabling retrofits Suitable solely for SE Power FS servo drives series The Safe Stop 1 SS1 function can be realised by employing a suitable external safety switching device and appropriate servo drive SE Power FS circuitry ...

Страница 18: ...wer semiconductor thus preventing the power end stage supplying the voltage required by the motor see Figure 2 1 Safety circuit switch relay safety switching device 2 SE Power FS Safety Module STO 3 Power end stage in the SE Power FS only one phase illustrated 4 Driver supply 5 Motor connection 6 LED green yellow status display 7 Feedback contact Figure 2 Safe Torque Off Operating principle for th...

Страница 19: ... pole pitch Examples Rotary axis synchronous machine 8 pin movement 45 at the motor shaft Linear motor poles pitch 20 mm movement 20 mm at the moving part 4 2 2 Overview of interface X40 On its front the safety module provides an 8 pin connection X40 for control ports feedback contact and a 24 V auxiliary supply for external sensors Section 5 2 The safety function STO is requested solely via the t...

Страница 20: ...s active safety sensors e g light curtains with OSSD signals and of switch contacts safety switching device with relay outputs passive safety sensors e g forcibly guided position switches e g Section 5 2 3 Figure 7 To request the safety function STO Safe Torque Off the 24 V control voltage at both control ports STO A and STO B is switched off 0 V If the two control ports are switched off simultane...

Страница 21: ...d and thus do not trigger the STO function The tolerance to test pulses from sensors with OSSD signals is rated for the operating range specified in accordance with Appendix 9 1 4 Table 22 The permissible test pulse length is dependent upon the control voltage level at inputs STO A and STO B Example Input voltage for STO A and STO B 24 V OSSD signals with a test pulse length of 3 5ms are tolerated...

Страница 22: ...dbus communication can be activated deactivated or a station address can be set for example via the DIP switches 4 3 Functionalities in the basic SE Power FS The following functions in the basic unit SE Power FS are not certified according to EN 61800 5 2 They are functional supplements and offer additional diagnostics options Error messages generated by the safety module such as exceeding the dis...

Страница 23: ...ses etc Note The brake is activated by the servo drive s non safety firmware Note If one of the control ports STO A or STO B is deactivated with an active output the drive coasts unbraked if no holding brake is connected This can cause damage to the machine It is therefore recommended that a holding brake is connected to the servo drive Please check whether the motors with holding brake you use is...

Страница 24: ...the 10ms cycle This generally results in a graded response speed as per Table 3 Function Response time Reaction Switching time from high to low T_STO A B_OFF Section 9 1 4 Table 21 Switching time from low to high T_STO A B_ON Section 9 1 4 Table 21 Detection of driver supply failure tReaction 125µs Activation of the power semiconductor PWM is switched off Activation of holding brake tReaction 10ms...

Страница 25: ...on 9 1 4 Table 21 T_STO A B_ON STO A B Switching time from Low to High Section 9 1 4 Table 21 T_C1 C2_ON C1 2 Switching time closing Section 9 1 4 Table 23 T_C1 C2_OFF C1 2 Switching time opening Section 9 1 4 Table 23 T_DRIVE_V Delay of the SE Power FS 0 10ms Table 4 Time data concerning Figure 3 SE Power FS Safety Module STO STO A Status C1 C2 STO B Status LED closed open on off 1 0 SE Power FS ...

Страница 26: ... motor irrespective of brake activation deactivation is displayed The set point value is only activated when the holding brake delay T_BRAKE_V has expired An error is triggered because the STO inputs are deactivated while the output stage is active Figure 4 Time behaviour when activating the safety function STO with restart SE Power FS Safety Module STO STO A STO B Status LED C1 C2 1 0 on off SE P...

Страница 27: ... T_DIN5_SU Time for which the DIN5 must be Low after switching on STO A B again and status change of the STO module 20ms T_DRIVE_V Delay of the SE Power FS 0 10ms T_BRAKE_V_ON Switch off delay of the holding brake Dependent on the brake 1 T_BRAKE_V_OFF Switch on delay of the holding brake Dependent on the brake 2 1 Physical delay until the brake closes 2 Minimum time Physical delay until the brake...

Страница 28: ... found in Table 6 Figure 5 Time behaviour when activating the safety function SS1 external switching with restart Safety switching device Status LED C1 C2 SE Power FS Safety Module STO 1 0 on off SE Power FS Holding brake optional T_STO A B_OFF T_DIN5_SU T_STO A B_ON Speed Servo drive enable DIN5 24 V 0 V 1 0 Output stage enable intern T_BRAKE_V_OFF T_DRIVE_V T_BRAKE_V_ON S1 K1 DIN5 closed open 1 ...

Страница 29: ...21 T_STO A B_ON STO A B Switching time from Low to High Section 9 1 4 Table 21 T_DRIVE_V Delay of the SE Power FS 0 10ms T_DIN5_SU Time for which the DIN5 must be Low after switching on STO A B again and status change of the STO module 20ms T_BRAKE_V_ON Switch off delay of the holding brake Dependent of the brake 1 T_BRAKE_V_OFF Switch on delay of the holding brake Dependent of the brake 2 1 Physi...

Страница 30: ...e electrical equipment and secure it to prevent a restart 2 After switching it off wait at least 5 minutes of discharge time and check that it is voltage free before accessing the servo drive Note Incorrect handling can damage the safety module or servo drive Before mounting and installation work switch off the supply voltage Switch on the supply voltage only when the mounting and installation wor...

Страница 31: ...trip within the servo drive is reached carefully press it into the contact strip until it stops 3 Then screw the safety module with the two screws onto the front of the servo drive housing Tighten the screws with approx 0 35 Nm Figure 6 Mounting Dismounting 5 1 2 Dismounting the safety module 1 Unscrew screws on the safety module 2 Loosen the safety module by gently levering the front cover or by ...

Страница 32: ...rements of EN 60204 1 for DC power supply behaviour during power interruptions etc The cable is connected via a plug making it easier to replace the safety module Make sure that no jumpers or the like can be inserted parallel to the safety wiring e g through the use of the maximum wire cross section of 1 5 mm or suitable wire end sleeves with insulating collars Use twin wire end sleeves for loopin...

Страница 33: ...ectly the control ports STO A and STO B are to be connected in two channels with parallel wiring see Section 5 3 1 Figure 7 This interface can be part of an emergency stop circuit or a protective door arrangement for example 5 2 4 Minimum wiring for commissioning X40 If at the moment of the commissioning of the servo positioning controller there s not yet a safety orientated connection the servo p...

Страница 34: ... FS Safety Module STO example of single phase servo drive SE Power FS 1 2 3 4 5 L230VAC N230VAC PE 24VDC T1 1 2 7 8 9 L1 PE 24V GND24V N X9 21 9 DIN4 DIN5 X1 1 3 2 4 STO A STO B 0V B 0V A X40 Output PLC Output stage enable Output PLC Servo drive enable Only the relevant connections are drawn Without cross circuit detection 0VDC 5 6 C1 C2 Input PLC Safety feedback T1 S1 emitter receiver OSSD1 OSSD2...

Страница 35: ...is output by the floating contact C1 C2 Notes with regard to a typical circuit The servo drive with safety module does not have integrated cross circuit detection With direct light barrier wiring the light barrier detects cross circuits if designed to do so When using safety switching devices the contacts C1 C2 can be integrated in the feedback circuit of the safety switching device The typical ci...

Страница 36: ...ircuit Decelerate and safe torque off SS1 Safe Stop 1 example single phase servo drive SE Power FS 1 2 3 4 5 N230VAC PE 24VDC T1 SE Power FS 1 2 7 8 9 L1 PE 24V GND24V N X9 21 9 DIN4 DIN5 X1 1 3 2 4 STO A STO B 0V B 0V A X40 Output PLC Output stage enable Output PLC Servo drive enable Only the relevant connections are drawn 0VDC 5 6 C1 C2 Input PLC Safety feedback S1 emitter receiver OSSD1 OSSD2 S...

Страница 37: ...ypical circuit The safety switching device used must switch off the servo drive enable X1 9 DIN5 without a delay and the inputs STO A and STO B X40 1 3 with a delay The required delay is application dependent and must be defined specific to the application concerned The delay must be designed so that the drive is decelerated to zero even at maximum speed via the quick stop ramp in the SE Power FS ...

Страница 38: ...nction Carry out a risk evaluation for your application and select the circuitry and components accordingly Note the examples Section 5 3 6 1 Before commissioning Perform the following steps to prepare for commissioning 1 Ensure that the safety module is correctly mounted see Section 5 1 2 Check the electrical installation connecting cable pin allocation see Section 5 2 Are all protective earth co...

Страница 39: ...d With the integrated Functional Safety Modules SE Power FS Safety Module STO and SE Power FS Safety Module MOV these traceable modifications relate to a module replacement The configuration is performed in the window Safety module of the Afag SE Commander see Section 6 3 3 Window Safety module The Afag SE Commander parameterisation software has been expanded for the use of the SE Power FS series ...

Страница 40: ...reen there is a status bar It shows the type of the servo drive and the type of the integrated Functional SE Power FS Safety Module see Figure 9 Additionally type serial number and version are indicated in the window Safety module see Section 6 3 3 Window Safety module Menu bar Tool bar Main screen Status window Status indication state machine Type indication servo drive Type indication safety mod...

Страница 41: ...y the power end stage of the SE Power FS may be already safely switched off by the Functional SE Power FS Safety Module STO see also Section 6 3 3 3 Status LEDs In addition the status of the internal state machine is indicated in the window Safety module see Section 6 3 3 Window Safety module 6 3 3 Window Safety module In order to use the SE Power FS servo drives with an integrated Functional Safe...

Страница 42: ...eld displays the device data that have been stored on the Functional Safety Module during factory commissioning Type Exact type designation for example FSM 2 0 STO Serial number The serial number is assigned during production and is stored on the module The serial number is unique for a product of the applicable type Revision Revision number of the hardware 6 3 3 2 Firmware The Functional SE Power...

Страница 43: ... Off STO Safety circuit error Safe state SAFE TORQUE OFF this means that the power output stage of the basic unit SE Power FS is reliably switched off Z1 Normal operation Safe Torque Off STO Safety circuit error The safety conditions are violated The detected state of the two driver supply voltages does not comply with any of the defined valid states The PWM has been deactivated the power output s...

Страница 44: ...possibly additional safety measures 3 User information on the residual risk Yes No 3 Were the hazards eliminated or the hazard risk reduced as far as practically possible Yes No 4 Can it be guaranteed that the implemented measures will not pose new hazards Yes No 5 Have the users been adequately informed and warned about the residual risks Yes No 6 Can it be guaranteed that the operators working c...

Страница 45: ...ions Yes No Pressing the emergency stop button on the unit Is the drive shut down Yes No If only STO A is activated is the drive shut down immediately and the discrepancy time violation error Display 52 1 reported in the SE Power FS after the discrepancy time has lapsed Yes No If only STO B is activated is the drive shut down immediately and the discrepancy time violation error Display 52 1 report...

Страница 46: ...d care The safety module does not require any maintenance 7 3 Protective functions 7 3 1 Voltage monitoring The input voltages at STO A and STO B are monitored If the input voltage at STO A or STO B is too high or too low the driver supply for the power semiconductors of the servo drive are safely switched off The power output stage PWM is thus switched off 7 3 2 Protection against overvoltage and...

Страница 47: ...ay is intended for the unsafe status the normal status displays of the servo drive are represented Table 12 Seven segment display on the servo drive 7 4 2 Error messages When an error occurs the servo drive shows an error message cyclically in the seven segment dis play on the front of the servo drive The error message consists of an E for Error a main index xx and sub index y e g E 5 1 0 Warnings...

Страница 48: ...t fit the design For module replacement Module type not yet in design Accept installed safety module or fieldbus activation module see Section 6 3 3 3 Safety module Different module version Module type or version is not supported Install a safety module or fieldbus activation module appropriate for the firmware and hardware 2 Load a firmware suitable for the module see type designation on the modu...

Страница 49: ...installation Information on removing and installing the safety module can be found here Mounting dismounting the safety module see Section 5 1 Accept the serial number of the replaced safety module see Section 6 3 3 8 2 Decommissioning and disposal Observe the information for dismantling the safety module in Section 5 1 8 2 1 Disposal Observe the local regulations for environmentally appropriate d...

Страница 50: ...8 3 2 SE Power FS Devices of the SE Power FS series feature in combination with the SE Power FS Safety Module have the safety function STO Safe Torque Off in accordance with EN 61800 5 2 SIL3 and or EN ISO 13849 1 Cat 4 PL e The two switch off paths are realised via the control ports STO A X40 1 and STO B X40 3 The potential free feedback contact X40 Pins 5 and 6 is also present 8 3 3 Modification...

Страница 51: ...tion to the machine Note The parameter set of the SE Power must be transferred with the same values to the parameter block of the SE Power FS If these values are increased which in turn poses a higher risk a new risk assessment must be performed on the machine Note Once the servo drive has been replaced the safety function must be validated in accordance with the machine manufacturer s specificati...

Страница 52: ... coverage HFT 1 Hardware failure tolerance SFF 99 2 Safe Failure Fraction PFH 1 07 x 10 10 Probability of dangerous Failure per Hour PFD 2 3 x 10 5 Probability of dangerous Failure on Demand T Years 20 Proof Test Interval Duration of use in accordance with EN ISO 13849 1 MTTFd Years 100 Mean time to dangerous failure Calculated at 1450 years limited to 100 years Table 14 Technical data Safety indi...

Страница 53: ...on materials RoHS compliant Table 16 Technical data Mechanical Certifications SE Power FS Safety Module STO for servo drives SE Power FS CE marking In accordance with EU EMC Directive In accordance with EU machine directive The device is intended for industrial use Measures for interference suppression may need to be implemented in residential areas Table 17 Technical data Certifications ...

Страница 54: ...chnical data Storage Ambient conditions Ambient temperature C 0 40 outside the servo drive housing Cooling By means of ambient atmosphere in the servo drive no forced ventilation Permissible setup altitude m 2000 above sea level Protection class IP20 mounted in the SE Power FS Air humidity Relative air humidity up to 90 non condensing Degree of contamination in accordance with EN 61800 5 1 2 The i...

Страница 55: ...to low STO A B_OFF ms 10 typical maximum 20 at 28 8 V Switching time from low to high STO A B_ON ms 1 typical maximum 5 Maximum positive test impulse length at logic 0 µs 300 related to nominal voltage 24 V and intervals 2 s between impulses Table 21 Technical data Electrical for ports STO A and STO B Switch off time to power output stage inactive and maximum tolerance time for test pulse Input vo...

Страница 56: ...chnical data Electrical data of the feedback contact C1 C2 Auxiliary supply 24V 0V X40 output Version Logic supply voltage routed out of the servo drive Feed in at X9 not additionally filtered or stabilised Reserve polarity protected overvoltage proof up to 60 V DC Nominal voltage V 24 Nominal current mA 100 short circuit proof max 300 mA Voltage drop V 1 for nominal current Table 24 Technical dat...

Страница 57: ...ol cabinet use screened cable Guide screening into the control cabinet attach to the side of the control cabinet Cable cross section flexible conductors wire end sleeve with insulating collar One conductor mm 0 25 0 5 Two conductors mm 2 x 0 25 with twin wire end sleeves Tightening torque M2 Nm 0 22 0 25 Table 26 Technical data Cabling to X40 ...

Страница 58: ...p a process or a motion if this creates a danger OSSD Output Signal Switching Device Output signals with 24 V cycle rates for error detection PFD Probability of Failure on Demand in accordance with IEC 61508 PFH Probability of Dangerous Failures per Hour in accordance with IEC 61508 PL Performance Level in accordance with EN ISO 13849 1 Stages a e SFF Safe Failure Fraction in accordance with IEC 6...

Страница 59: ...SE Power FS STO manual vers 1 6 en 12 08 2015 59 ...

Страница 60: ...Afag Automation AG Fiechtenstrasse 32 4950 Huttwil Schweiz Tel 41 0 62 959 86 86 Fax 41 0 62 959 87 87 e mail sales afag com Internet www afag com ...

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