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MAKING MODERN LIVING POSSIBLE

Operating Instructions

VLT

®

Frequency Converters - Safe Torque Off

www.danfoss.com/drives

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Summary of Contents for VLT

Page 1: ...MAKING MODERN LIVING POSSIBLE Operating Instructions VLT Frequency Converters Safe Torque Off www danfoss com drives...

Page 2: ......

Page 3: ...n Combination with VLT PTC Thermistor Card MCB 112 8 4 Commissioning 9 4 1 Safety Instructions 9 4 2 Activation of STO 9 4 3 Parameter Settings for STO in Combination with VLT PTC Thermistor Card MCB...

Page 4: ...t a thorough risk analysis on the installation to determine whether the STO functionality and safety levels are appropriate and sufficient The VLT frequency converter is available with Safe Torque Off...

Page 5: ...isfies all provisions for safety including relevant laws regulations and guidelines The integrated STO function complies with the following standards EN 60204 1 2006 Stop category 0 uncontrolled stop...

Page 6: ...evel used to specify the ability of safety related parts of control systems to perform a safety function under foreseeable conditions Levels a e SFF EN IEC 61508 Safe Failure Fraction percentage of sa...

Page 7: ...ems hardware software parameterisation etc Protective measures Safety engineering systems may only be installed and commissioned by qualified and skilled personnel Install the frequency converter in a...

Page 8: ...lar paragraph 6 3 3 2 5 of ISO 12100 2010 must be observed WARNING RISK OF DEATH AND SERIOUS INJURY The STO function can be used for asynchronous synchronous and permanent magnet motors 2 faults can o...

Page 9: ...al 12 13 24 V and 37 2 Connect an external safety monitoring relay via a NO safety function to terminal 37 STO and either terminal 12 or 13 24 V DC Follow the installation instructions for the safety...

Page 10: ...ure that the safety device with AND logic complies with the needed safety level Short circuit protect the connection from the output of the safety device with safe AND logic to the STO terminal 37 see...

Page 11: ...B 112 uses the STO If selection 4 PTC 1 Alarm or 5 PTC 1 Warning is selected and the external safety device triggers STO the frequency converter issues an alarm Dangerous Failure A72 and coasts the mo...

Page 12: ...e Off and MCB 112 where 5 19 Terminal 37 Safe Stop is set to 7 PTC 1 Relay W or 8 PTC 1 Relay A W 1 Remove the 24 V DC voltage supply to terminal 37 by the interrupt device while the frequency convert...

Page 13: ...m Mean Time to Dangerous Failure MTTFd 14000 years High Performance Level PL d IEC 61508 IEC 62061 Safety Integrity Level SIL 2 SIL CL2 Probability of Dangerous Failure per Hour PFH 1E 10 h High Deman...

Page 14: ...tput 8 P Parameter settings 9 Products covered 2 Q Qualified personnel 5 R Restart behaviour 9 Restart prevention 9 10 S Safety device 8 Safety guard switch 8 Safety related sensor 8 Selections 9 Sign...

Page 15: ...Index Operating Instructions MG37D202 Danfoss A S 09 2014 All rights reserved 13...

Page 16: ...lies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed All trademarks in this material are property...

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