• FPTC-02 ATEX-certified thermistor protection module, Ex II (2) GD (option +L537+Q971)for ACS880 drives user's manual (3AXD50000027782 [English]).• CPTC-02 ATEX-certified thermistor protection module, Ex II (2) GD (option +L537+Q971)user's manual (3AXD50000030058 [English]).Implementing the Power-loss ride-through functionImplement the power-loss ride-through function as follows:• Check that the power-loss ride-through function of the drive is enabled with parameter30.31 Undervoltage control.• Set parameter 21.01 Vector start mode to Automatic (in vector mode) or parameter21.19 Scalar start mode to Automatic (in scalar mode) to make flying start (startinginto a rotating motor) possible. If the installation is equipped with a main contactor,prevent its tripping at the input power break. For example, use a time delay relay (hold)in the contactor control circuit.WARNING!Make sure that the flying restart of the motor will not cause any danger. If youare in doubt, do not implement the Power-loss ride-through function.￭ Units with line contactor (option +F250)The main contactor of the drive opens in a power-loss situation. When the power returns,the contactor closes. However, if the power-loss situation lasts so long that the drive tripson undervoltage, it must be reset and started again to continue operation. If the power-losssituation lasts so long that the buffering module (C22) empties, the main contactor remainsopen and the drive operates only after reset and a new start.Supplying power for the auxiliary circuitsThe drive is equipped with an auxiliary control voltage transformer which supplies controlvoltage, for example, for the control devices and cabinet fan(s).Supply this option from an external power source:• +G300 Cabinet heaters (230 or 115 V AC; external fuse: 16 A gG).Using power factor compensation capacitors with the drivePower factor compensation is not needed with AC drives.WARNING!Do not connect power factor compensation capacitors or harmonic filters to themotor cables (between the drive and the motor). They are not meant to be usedwith AC drives and can cause permanent damage to the drive or themselves.Implementing a safety switch between the drive and themotorABB recommends to install a safety switch between the permanent magnet synchronousmotor and the drive output. The switch is needed to isolate the motor during any maintenancework on the drive.Guidelines for planning the electrical installation 8311
