LEESON SM-Basic Series Sub-Micro Inverters (Obsolete) - Manual (Page 20)

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12.0 INITIAL POWER UP AND MOTOR ROTATION
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.
If possible, disconnect the driven load from the motor. Verify that the drive input terminals (L1, L2,
and L3 or N) 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 two-digit number (15 in the example
below) that identifies the parameter version contained in the drive ("15" actually means parameter
version 315). The display should then read “- -", which indicates that the drive is in a STOP condition.
This is shown below:
WARNING!
DO NOT connect incoming AC power to output terminals T1, T2, and T3! 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.
WARNING!
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!
WARNING!
Hazard of electrical shock! The SM-Basic control terminals are not isolated from line voltage!
Line voltage is present between the control terminals and ground. Do not touch!
Capacitors retain charge after power is removed. Disconnect input power and wait until the voltage
between terminals B+ and B- is 0 VDC before making control connections or servicing the drive.
Apply input power
Display then reads "- -"
Display flashes parameter
version (00-99)