2.1.5. CautionThe frequency converter DC link capacitors remain charged after power has been disconnected. To avoid an electrical shock hazard,disconnect the frequency converter from the mains before carrying out maintenance. Wait at least as follows before doing service onthe frequency converter:Voltage Min. Waiting Time4 min. 15 min. 20 min. 30 min.200 - 240 V 0.25 - 3.7 kW 5.5 - 45 kW380 - 480 V 0.37 - 7.5 kW 11 - 90 kW 110 - 250 kW 315 - 450 kW525-600 V 0.75 kW - 7.5 kW 110 - 250 kW 315 - 560 kW525-690 V 45 - 400 kW 450 - 630 kWBe aware that there may be high voltage on the DC link even when the LEDs are turned off.2.1.6. Avoid unintended StartWhile the frequency converter is connected to mains, the motor can be started/stopped using digital commands, bus commands,references or via the Local Control Panel.• Disconnect the frequency converter from mains whenever personal safety considerations make it necessary to avoid unintended start.• To avoid unintended start, always activate the [OFF] key before changing parameters.• Unless terminal 37 is turned off, an electronic fault, temporary overload, a fault in the mains supply, or lost motor connection may cause astopped motor to start.2.1.7. Safe Stop of the Frequency Converter (optional)For versions fitted with a Safe Stop terminal 37 input, the frequency converter can perform the safety functionSafe Torque Off (As defined by draft CDIEC 61800-5-2) orStop Category 0 (as defined in EN 60204-1).It is designed and approved suitable for the requirements of Safety Category 3 in EN 954-1. This functionality is called Safe Stop. Prior to integration anduse of Safe Stop in an installation, a thorough risk analysis on the installation must be carried out in order to determine whether the Safe Stop functionalityand safety category are appropriate and sufficient. In order to install and use the Safe Stop function in accordance with the requirements of SafetyCategory 3 in EN 954-1, the related information and instructions of the VLT AQUA Drive Design Guide MG.20.NX.YY must be followed! The informationand instructions of the Operating Instructions are not sufficient for a correct and safe use of the Safe Stop functionality!VLT® AQUA DriveOperating Instructions 2. SafetyMG.20.M5.02 - VLT® is a registered Danfoss trademark 72