Lenze SCF frequency inverter - Manual (Page 28)

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Lenze 13466146 EDBSF01 v24 EN
4 Commissioning
Apply input power
Display then reads "- - -"
Display flashes parameter
version (300-399)
4 Commissioning
4.1 Initial Power-Up and Motor Rotation
DANGER!
Hazard of electrical shock! Wait three minutes after disconnecting incoming power
before servicing drive. Capacitors retain charge after power is removed.
STOP!
• DO NOT connect incoming AC power to output terminals T1, T2, and T3 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.
• 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! Refer to Section
3.1.1.
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, 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 (312 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:
Follow the following procedure to check the motor rotation. This procedure assumes that the drive
has been powered up for the first time, and that none of the parameters have been changed.
1. Use the q button to decrease the speed setpoint to 00.0 Hz. The left decimal point will
illuminate as the speed setpoint is decreased. If the q button is held down, the speed setpoint
will decrease by tenths of Hz until the next whole Hz is reached, and then it will decrease by
one Hz increments. Otherwise, each push of the q button will decrease the speed setpoint by
a tenth of a Hz.
Once 00.0 Hz is reached, the display will toggle between “00.0” and “- - -”, which indicates that
the drive is in a STOP condition with a speed setpoint of 00.0 Hz.
2. Give the drive a START command. This can be done using one of several wiring methods described
in Section 3.6 - SCF Control Wiring Diagrams. Once the START command is issued, the display
will read “00.0”, indicating that the drive is in a RUN condition with a speed setpoint of 00.0
Hz.