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STO 

– Safe Torque OFF 

 
 
Document History 

 

Operating Manual Rev. 1.3 

www.engelantriebe.de 

page 2

 

 

Document History

 

 

Document 
 

Date 

(dd.mm.yyyy) 

Rev 

 

Changes 
 

BA_STO_Entwurf_de_xxxxxx_de 

xx.xx.xxxx 

1.0  Erstellung Entwurf 

BA_STO_Rev1.1_200518_de 

18.05.2020 

1.1  Installationsbeispiele 1-/2-kanalig OSSD, versch. Hinweise 

ergänzt, div. Korrekturen, AC Anteil Versorgung 

BA_STO_Rev1.2_200527_de 

27.05.2020 

1.2  Rework after Review 

BA_STO_Rev1.3_210507_en 

07.05.2021 

1.3  First English edition 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Copyright

 

The information and specifications in this document have been compiled with great care and to the best of our knowledge. 
However, specifications differing between the document and the product cannot be eliminated with absolute certainty. 

ENGEL assumes no liability whatsoever for errors or consequential damages resulting from these deviations. No liability is 
assumed for damages which arise from the use of the device with the use of applications or defective circuits, either. 

ENGEL reserves the right to change, supplement or improve the document or the product without prior notice. This docu-
ment may not, without the express authorization of the copyright holder, be reproduced in any way or be transmitted in 
another natural or machine language or on data carrier, whether this would take place electronically, mechanically, visually 

or in any other manner.

Содержание HFI2230-S200

Страница 1: ...STO Safe Torque OFF Operating Manual Rev 1 3 www engelantriebe de page 1 Operating Manual Supplement Rev 1 3 Integrated Drives HFI equipped with STO Module SAFE TORQUE OFF...

Страница 2: ...nd to the best of our knowledge However specifications differing between the document and the product cannot be eliminated with absolute certainty ENGEL assumes no liability whatsoever for errors or c...

Страница 3: ...7 6 FUNCTIONAL DESCRIPTION 8 6 1 Inputs of the STO channels 8 6 2 STO status signal 10 6 2 1 Functionality of the status signal and the status output 10 6 2 2 Diagnostic test 11 6 2 3 Switch off time...

Страница 4: ...models are equipped with an additional hardware module for this purpose and bear the S in their type designation The following basic devices optionally expandable with fieldbus interfaces gearboxes an...

Страница 5: ...erating manual of the drive used 5 2 Intended use The drives of the HFI series with integrated STO module may only be used under the following conditions The drive is in technically perfect condition...

Страница 6: ...ct integration of the safety function of the device into the overall system The system machine manufacturer must always carry out a system machine specific risk assessment in accordance with DIN EN 60...

Страница 7: ...stems the applicable regulations for the operation of safety related installations the applicable regulations for accident prevention and occupational safety the available documentation on the drives...

Страница 8: ...such as electronic safety relays passive safety sensors such as position switches with forcibly guided contacts see Figure 6 1 STO function with emergency stop device active safety sensors such as lig...

Страница 9: ...of the integrated drive Each STO input and the status output are galvanically isolated from each other and from the control electronics of the integrated drive Note An incorrect wiring of the STO inpu...

Страница 10: ...vel control unit The status output has reverse polarity protection and is protected against overload and short circuit by a resettable fuse Channel1 VSTO1 Channel2 VSTO2 Status Output Note 0 5 V OFF 0...

Страница 11: ...safe state 2 24 V ON 0 5 V OFF open non conductive Invalid state STO channels inconsistently driven 3 0 5 V OFF 0 5 V OFF closed conductive Both STO channels voltage free unsupplied STO active safe st...

Страница 12: ...PWM pulse patterns is guaranteed after a switch off time of 20 ms max Figure 6 4 STO function switch off time Note There is no discrepancy time monitoring between the signals STO1 and STO2 This means...

Страница 13: ...tegrated drives The firmware monitors the internal signal voltages of the STO channels as well as the temperature of the STO module In the event of impermissible operating conditions error messages ar...

Страница 14: ...voltage STO1 min STO channel 1 voltage too low Operate STO channel with the specified voltage F082h 13 00003 Signal voltage STO1 max Internal error No action F083h 13 00257 Temperature of STO 115 C Ov...

Страница 15: ...he STO function and the safe deacti vation of the power stage Ambient temperature C 0 40 No condensation permissible Storage temperature C 25 75 No condensation permissible Permissible altitude m 2000...

Страница 16: ...DCavg 0 00 Average diagnostic coverage MTTFd years 25974 Mean time to dangerous failure PL e Performance level Cat 3 Category 7 3 Certification Designation Type examination The functional safety techn...

Страница 17: ...STO2 STO channel 2 supply reference potential 0 V 8 RD n c 1 Wire colours and cross sections apply to assembled STO connection cables from ENGEL Elektroantriebe GmbH see chapter 8 2 STO connection ca...

Страница 18: ...8 3 Installation diagrams 8 3 1 Examples for dual channel STO connection Figure 8 2 Dual channel STO connection with emergency stop device Figure 8 3 Dual channel STO connection with OSSD switching de...

Страница 19: ...page 19 8 3 2 Examples for single channel STO connection Figure 8 4 Single channel STO connection with emergency stop device Figure 8 5 Single channel STO connection with OSSD switching device The in...

Страница 20: ...ning instructions described in the operating manual of the HFI series the following steps have to be executed Step 1 Wire the connections of the STO module properly according to the installation diagr...

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