Table of Contents
Advertisement
Chapter 4
RUNNING THE MOTOR
4.1 Test Run
4.1.1 Checking prior to powering on
Check the following prior to powering on the inverter.
(1) Check the wiring to the power input terminals (L1/R, L2/S and L3/T or L1/L and L2/N)
and inverter output terminals (U, V and W). Also check that the grounding wires are
connected to the grounding terminals correctly. See Figure 4.1.
• Do not connect power supply wires to the inverter output terminals U, V, and W.
Otherwise, the inverter may be broken if you turn the power ON.
• Be sure to connect the grounding wires of the inverter and the motor to the ground
electrodes.
Otherwise, electric shock may occur.
(2) Check the control circuit terminals and main circuit
terminals for short circuits or ground faults.
(3) Check for loose terminals, connectors and screws.
(4) Check that the motor is separated from
mechanical equipment.
(5) Make sure that all switches of devices connected to
the inverter are turned OFF. (Powering on the
inverter with any of those switches being ON may
cause an unexpected motor operation.)
(6) Check that safety measures are taken against
runaway of the equipment, e.g., a defense to
prevent people from access to the equipment.
4.1.2 Powering ON and checking
• Be sure to mount the terminal block covers before turning the power ON.
Do not remove any cover while powering on.
• Do not operate switches with wet hands.
Otherwise electric shock could occur.
Turn the power ON and check the following points. This is a case
when no function code data is changed from the factory defaults.
(1) Check that the LED monitor displays
(indicating at the frequency command is 0 Hz) that is blinking.
(See Figure 4.2.)
If the LED monitor displays any number except
use the potentiometer to set
(2) Check that the built-in cooling fan rotates.
*00
*00
.
*00
(E.g. Wire connection for three-phase
Figure 4.1 Connection of Main Circuit
,
Figure 4.2 Display of the LED Monitor
4-1
power supply)
Terminals
Advertisement
Table of Contents
