Selec VFD Series

Ÿ Do not connect the unit to the power supply until the enclosure is assembled and closed.
Ÿ Its default running mode is to be controlled through the keyboard and panel.
5-1-1 Check before running
Ÿ Please confirm that there is no short circuit between terminals or any exposed charged
component.
Ÿ Please check whether the wiring is correct or not, especially output terminals (U, V, W) which
mustn't be connected to the power source; additionally, earth terminals PE must be well-grounded
as well.
Ÿ It is recommended to use appropriately sized lugs instead of free wires to prevent rogue strands
from creating a short between adjacent terminals.
5-1-2 Commissioning
Ÿ Please confirm that all the components, such as terminals, pluggable connectors, or screws are
fastened.
Ÿ The drive wirings must be checked and confirmed comprehensively before commissioning.
Ÿ It is recommended that post initial settings, the user start by checking the jogging function. The
default jog frequency is 5.0Hz.
5-1 Commissioning
Ÿ Make sure that all the switches are off before it's connected to a power source, and that the
converter will not malfunction or be accidentally started when switched on.
Ÿ Check whether the motor is rotating in the right direction.
Ÿ Check if its rotation is smooth (No abnormal noise or vibration should be observed).
Ÿ If the drive functions properly, please preset its operating frequency first; please press the START
button to start running and check whether its output current/voltage is normal.
Ÿ Check if the acceleration or deceleration of the motor is stable.
Ÿ Only then start using the drive in your regular operations.
If the drive or the system as a whole responds unexpectedly, use the RUN/STOP key to stop the
operation of the drive immediately. Meanwhile, check Chapter 7 for a guide on debugging the
commonly faced faults.
Even after drive operation is stopped, there could be a risk of electrical shock on the terminals of
the unit as long as the mains are connected. It is therefore strongly advised that any kind of operation
on the terminals should only be undertaken after switching OFF the mains and waiting for adequate
time for the DC bus capacitors to discharge.
5. RUNNING
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User Manual