Danfoss VLT CDS 303 Operating Instructions Manual

Also see for VLT CDS 302: Troubleshooting Operating instructions

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Danfoss VLT CDS 303 Operating Instructions Manual Manual pdf 15 page image

WARNINGAutomatic Restart Behaviour is permitted in one of thetwo situations:1. The Unintended Restart Prevention isimplemented by other parts of the Safe TorqueOff installation.2. A presence in the dangerous zone can bephysically excluded when Safe Torque Off is notactivated. In particular, paragraph 5.3.2.5 of ISO12100-2 2003 must be observed2.2.2 Safe Torque Off Commissioning TestAfter installation and before first operation, perform acommissioning test of an installation or application, usingSafe Torque Off.Perform the test again after each modification of theinstallation or application involving the Safe Torque Off.NOTICE!A passed commissioning test is mandatory after firstinstallation and after each change to the safety instal-lation.The commissioning test (select one of cases 1 or 2 asapplicable):Case 1: Restart prevention for Safe Torque Off isrequired (that is Safe Torque Off only whereparameter 5-19 Terminal 37 Safe Stop is set to defaultvalue [1], or combined Safe Torque Off and MCB 112where parameter 5-19 Terminal 37 Safe Stop is set to [6]PTC 1 & Relay A or [9] PTC 1 & Relay W/A):1.1 Remove the 24 V DC voltage supply toterminal 37 using the interrupt device while thefrequency converter drives the motor (that ismains supply is not interrupted). The test step ispassed when• the motor reacts with a coast, and• the mechanical brake is activated (ifconnected)• the alarm “Safe Torque Off [A68]” isdisplayed in the LCP, if mounted1.2 Send Reset signal (via Bus, Digital I/O, or[Reset] key). The test step is passed if the motorremains in the Safe Torque Off state, and themechanical brake (if connected) remainsactivated.1.3 Reapply 24 V DC to terminal 37. The test stepis passed if the motor remains in the coastedstate, and the mechanical brake (if connected)remains activated.1.4 Send Reset signal (via Bus, Digital I/O, or[Reset] key). The test step is passed when themotor becomes operational again.The commissioning test is passed if all four test steps 1.1,1.2, 1.3 and 1.4 are passed.Case 2: Automatic Restart of Safe Torque Off is wantedand allowed (that is, Safe Torque Off only whereparameter 5-19 Terminal 37 Safe Stop is set to [3], orcombined Safe Stop and MCB 112 whereparameter 5-19 Terminal 37 Safe Stop is set to [7] PTC 1 &Relay W or [8] PTC 1 & Relay A/W):2.1 Remove the 24 V DC voltage supply toterminal 37 by the interrupt device while thefrequency converter drives the motor (that ismains supply is not interrupted). The test step ispassed when• the motor reacts with a coast, and• the mechanical brake is activated (ifconnected)• the alarm “Safe Stop [A68]” is displayedin the LCP, if mounted2.2 Reapply 24 V DC to terminal 37.If the motor becomes operational again, The test step ispassed. If both test steps 2.1 and 2.2 are passed, thecommissioning test is passed.NOTICE!See warning on the restart behaviour inchapter 2.2.1 Terminal 37 Safe Torque Off FunctionWARNINGThe Safe Torque Off function can be used forasynchronous, synchronous and permanent magnetmotors. Two faults can occur in the power semiconductorof the frequency converter. When using synchronous orpermanent magnet motors a residual rotation can resultfrom the faults. The rotation can be calculated to Angle= 360/(Number of Poles). The application usingsynchronous or permanent magnet motors must takethis residual rotation into consideration and ensure thatit does not pose a safety risk. This situation is notrelevant for asynchronous motors.Safety Instructions and Gen... Operating InstructionsMG34M422 Danfoss A/S © Rev. 2013-07-03 All rights reserved. 132 2