‹ Before Power Up The following points should be checked carefully before the power is switched on. • Check if the power supply meets the inverter specification. • Check if the power supply cables are tightly connected to the right terminals (L1, L2, L3). • Check if the motor cables are tightly connected to the right terminals on the inverter side (U, V, W) as well as on the motor side. • Check if the braking unit / braking resistor is connected correctly. • Check if the Inverter control circuit terminal and the control device are wired correctly. • Set all Inverter control circuit terminals to OFF. • When a PG card is used, check if it is wired correctly.
‹ Display after Power Up After normal power up without any problems the operator display shows the following messages Display for normal operation The frequency reference monitor is dis- played in the data display section. Frequency Ref -DRIVE- Rdy U1- 01 =50.00Hz U1-02=50.00Hz U1-03=10.05A When a fault has occurred or an alarm is active a fault or alarm message will appear. In this case, refer to page 21, Troubleshooting . Display for fault operation A fault or alarm message is shown on the display. The example shows a low voltage alarm.
-DRIVE- UV DC Bus Undervolt ‹ Autotuning Autotuning sets motor parameters automatically when using Open Loop or Closed Loop Vector con- trol, when the cable length is long or the installation has changed. „ Setting the Autotuning Mode One of the following three autotuning modes can be set. • Rotating autotuning • Non-rotating autotuning • Non-rotating autotuning for line-to-line resistance only Rotating Autotuning (T1-01 = 0) Rotating autotuning is used for Open Loop and Closed Loop Vector control only. Set T1-01 to 0, input the data from the motor nameplate, and then press the RUN key on the Digital Operator.
The Inverter will operate the motor for approximately 1 minute and set the required motor parameters automatically. Non-rotating Autotuning (T1-01 = 1) Non-rotating autotuning is used for Open Loop and Closed Loop Vector control only. Set T1-01 to 1, input the data from the motor nameplate, and then press the RUN key on the Digital Operator. The inverter will supply power to the non-rotating motor for approximately 1 minute and some of the EN-16