LEESON SM Series Sub-Micro Inverters - Manual (Page 24)

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12.0 INITIAL POWER UP AND MOTOR ROTATION
DO NOT connect incoming AC power to output terminals U, V, and W or
terminals B+, B-! Severe damage to the drive will result. Do not continuously cycle
input power to the drive more than once every two minutes. Damage to the drive
will result.
Hazard of electrical shock! Wait three minutes after disconnecting incoming
power before servicing drive. Capacitors retain charge after power is removed.
Severe damage to the drive can result if it is operated after a long period of
storage or inactivity without reforming the DC bus capacitors!
If input power has not been applied to the drive for a period of time exceeding three years (due to storage,
etc), the electrolytic DC bus capacitors within the drive can change internally, resulting in excessive leakage
current. This can result in premature failure of the capacitors if the drive is operated after such a long
period of inactivity or storage.
In order to reform the capacitors and prepare the drive for operation after a long period of inactivity,
apply input power to the drive for 8 hours prior to actually operating the motor.
Before attempting to operate the drive, motor, and driven equipment, be sure all procedures pertaining
to installation and wiring have been properly followed.
Disconnect the driven load from the motor. Verify that the drive input terminals (L1, L2/N, or L1, L2,
and L3) are wired to the proper input voltage per the nameplate rating of the drive.
Energize the incoming power line. The LED display will flash a three digit number (320 in the example
below) that identifies the parameter version contained in the drive. The display should then read “- - -”,
which indicates that the drive is in a STOP condition. This is shown below:
Apply input power
Display flashes parameter
version (300-399)
Display then reads “- - -”
WARNING
WARNING
DANGER