Before Power Up; Display After Power Up; Autotuning - Omron VARISPEED F7 Quick Manual

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
When a fault has occurred or an alarm is active a fault or alarm message will appear. In this case,
refer to page 21,
Display for fault operation

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
-DRIVE-
Frequency Ref
U1- 01=50.00Hz
U1-02=50.00Hz
U1-03=10.05A
Troubleshooting.
-DRIVE-
UV
DC Bus Undervolt
Rdy
The frequency reference monitor is dis-
played in the data display section.
A fault or alarm message is shown on the
display.
The example shows a low voltage alarm.