GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 112)

GEI-100332Ga
——— CONVERTER OPERATION ———
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5.3.2 Checking the wiring and the auxiliary voltages
The following should be checked before switching on the device:
- Proper connection of cables (Section 4, “Wiring procedures”)
- Compliance with Section 4.11, “Engineering notes”
- When the device current limit is not set according to the rated current value of the connected motor, a pro-
tection thermal relay must be inserted in the upper part of the converter, which has to be scaled according
to the motor rated current times 0.86.
W
arning
! It is not allowed to connect an external voltage on the converter output.
- Drive disabled (disconnect the terminal 12)
- The following voltages must be present:
- terminal 7 + 10V to terminal 9
- terminal 8 - 10V to terminal 9
- terminal 19 + 24 ... 30V to terminal 18
- Select the Actual spd (rpm) parameter in the DRIVE STATUS menu.
- With a disabled regulator turn the motor in a clockwise direction (view facing the shaft).
The displayed value must be positive.
- If the value does not change or if wrong values are shown, check the power supply
and the cabling of the encoder/tachometer.
- If the displayed value is negative, the connections of the encoder or of the tachometer generator
must be changed: channel A+ with A- or B+ with B- of the encoder, change the connections
of the tachometer signal.
5.3.3 Basic settings of the converter
n
ote
! It is assumed that the device has the default configuration and is connected and tested according
to the diagrams provided in section 4.8, “Standard connection diagrams”. The default setting
can be loaded via the Load default parameter in the SPEC FUNCTIONS menu. Laoding
this parameter will mean that all modifications carried out by the user will be overwritten. An
exception is represented by the Tacho scale and Speed parameters. These are not overwritten
when the factory set values are loaded and it is not necessary to scale again the input signal
of the tachometer section. The same is valid for the Size selection parameter.
The factory setting allows a speed regulation with the cascade current regulation for a DC
motor, with an independent excitation and provided with a digital encoder. The drive, in this
case, does not operate with a Voltage control. Independently of the desired configuration, it is
advised to carry out all the basic settings described in order to avoid possible mistakes. After
the commissioning all other available functions can be activated. Their setting is described
in the following pages.
The possible values set for each parameter can be found in section 10, “Parameter lists”.
The following settings must be carried out with the disabled converter.
Enable drive = disabled (no voltage on the terminal12).
See section 5.1, “Keypad”, for information about operating the keypad.