Before Power Up; Display After Power Up; Autotuning For Line-To-Line Resistance - Omron VARISPEED E7 IP54 Kurzanleitung

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 23, Troubleshooting.
Display for fault operation

Autotuning for Line-to-Line Resistance

Autotuning can be used to improve the performance when very long motor cables are used or when
motor and inverter have different power ratings.
To perform autotuning set T1-02 (Motor rated power) and T1-04 (Motor rated current) and then
press the RUN key on the Digital Operator. The Inverter will supply power to the motor for approxi-
mately 20 seconds and the line-to-line resistance (stator windings and cable resistance) will be mea-
sured automatically.
1. Power will be supplied to the motor during autotuning but the motor will not turn. Do not touch the motor
until autotuning has been completed.
2. Ensure that all motor contactors are closed before the autotuning is started.
IMPORTANT
3. To cancel autotuning press the STOP key on the Digital Operator.
IMPORTANT
Other Alarms and Faults During Autotuning
For an overview of possible autotuning alarms or faults and corrective actions refer to
tuning Faults.
-DRIVE- Rdy
Frequency Ref
U1- 01=50.00Hz
U1-02= 0.00Hz
U1-03= 0.00A
-DRIVE-
UV
Main Power Loss
The frequency reference monitor is
displayed in the data display section.
A fault or alarm message is shown on
the display.
The example shows a low voltage
alarm.
page 25, Auto-
EN-18