Start-Up - Eliwell EWCFW-08 User Manual

CHAPTER 5 - START-UP

5.3 START-UP

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The four LEDs of the keypad remains ON during this procedure.
Inverter runs some self-diagnosis routines. If no problems are
found, the display shows:
This means that the inverter is ready (rdy = ready) to be
operated.
- Inverter with dummy panel (TCL-CFW08 or TCR-
CFW08).
The LEDs ON (green) and ERROR (red) are ON.
Inverter runs some self-diagnosis routines. If no problems are
found the LED ERROR (red) turns OFF. This means that the
inverter is now ready to be operated.
This section describes start-up procedures when operating
via the keypad (HMI). Two types of control will be considered:
V/F and Vector Control:
The V/F control is recommended in the following cases:
Several motors driven by the same inverter.
Rated current of the motor is lower than 1/3 of rated inverter
current.
For test purposes, inverter is start-up without load.
The V/F control can also be used in applications that do not
require fast dynamic responses, accurate speed regulations
or high starting torque (speed error will be a function of the
motor slip); when you program parameter P138 - Slip
Compensation - you can obtain a speed accuracy of 1 %.
For the most applications, we recommend the vector control
mode, that permits a higher speed control accuracy (typical
0.5 %), higher starting torque and a faster dynamic response.
The necessary adjustments for the operation of the vector
control are performed automatically. In this case the motor shall
be connected to the CFW-08.
DANGER!
Even after the AC power supply has been disconnected, high
voltages may be still present. Wait at least 10 minutes after
powering down to allow full discharge of the capacitors.