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Chapter Three
MANUAL# 9675-1035-000-A
9
Chapter Three: Initialization and Power Up
3.1
Before Any Initialization
The only setup required by the end user is to select the mode of operation. All the tuning has been
preset at the factory, meaning the drive will run correctly. If applying minor changes (adjusting input
command offsets, etc.) to the spindle drive, use the procedures below for reference.
3.2
Turning the Power On
Carefully recheck the wiring. Restore power to the VMC. For seven seconds the four rightmost seven-
segment displays will show the spindle drive configuration. Afterwards, those four displays will show
the rpm value of the spindle motor, not the spindle itself. Confirm the desired mode of operation has
been selected.
3.4 Operating the Spindle
From the VMC control panel operate the spindle and confirm the spindle runs at the commanded
speeds and in the correct direction (CW and CCW). It is important to note, the 4 digit display on the
drive reports the speed of the spindle motor, the speed of the spindle itself may be different
depending on the machine design and mode. The drive calculates the rpm from the encoder signals
when operating in vector mode, when the drive is used in VFD or inverter mode (no encoder) the rpm
is calculated from the input command signal voltage received from the Fadal control.
3.5 Pot Adjustments
Normally, no adjustments are needed. However, for convenience, there are two pots (see page 26)
the balance pot and the signal pot. The balance pot can be used to equalize the rpm’s in the CW and
CCW directions. The signal gain pot can be used to make small adjustments to the speed of the
spindle. The pots are not intended to correct large differences between commanded speed and actual
speed. If after initial installation the expected speeds are significantly different from the commanded
speeds double check that the mode of operation from the table is correct for the VMC. Consult your
distributor or Glentek technical support for additional help.
The pots can be restored to their starting or “zero” positions by using a voltmeter.
Attach the black lead to TP7 (see page 26) and the red lead to TP3 for balance and to TP4 for signal
gain. Adjust the voltage to 1.50VDC.
3.6
Rigid Tap Test (Optional)
If desired you can test the rigid tap mode of your VMC by performing the following procedure. This
procedure is drawn from the FADAL maintenance manual. Install the test screw (SVT-0077). The
screw can be fabricated from 1.000” round stock, by threading a 14 TPI Acme thread. Program is for
Format 1. Use test program #6000 or the following program:
