ES0755 rev A 1/11
8
LOW VOLT
HIGH VOLT
HIGH VOLT 488-458V 457-429V
428-403V
402-377V 376-354V
T5 Transformer
Main
Circuit
Breaker
WARNING!
Through the Spindle Coolant (TSC) pump is a three phase pump and must be phased correctly! Im-
proper phasing will cause damage to the TSC pump and void the warranty. Refer to the TSC start up
section IF YOUR MACHINE IS EQUIPPED WITH TSC.
6
. After the power is on, measure the voltage across the upper terminals on the contactor K1
(located below the main circuit breaker). It should be the same as the measurements where the
input power connects to the main breaker. If there are any problems, check the wiring.
7
. Apply power to the control by pressing the Power-On switch on the front panel. Check the high
voltage buss on the Vector Drive (pin 2 with respect to pin 3 on the terminal bus at the bottom of
the drive). It must be between 310 and 360 volts. If the voltage is outside these limits, turn off the
power and recheck steps 2 and 3. If the voltage is still outside these limits, call the factory. Next,
check the DC voltage displayed in the second page of the Diagnostic data on the display. It is
labeled DC BUS. Verify that the displayed voltage matches the voltage measured at pins 2 and 3
of the Vector Drive +/- 7 VDC.
8.
Electrical power must be phased properly to avoid damage to your equipment. The Power Sup-
ply Assembly PC board incorporates a “Phase Detect” circuit with neon indicators, shown below.
When the orange neon is lit (NE5), the phasing is incorrect. If the green neon is lit (NE6), the
phasing is correct. If both neon indicators are lit, then you have a loose wire. Adjust phasing by
swapping L1 and L2 of the incoming power lines at the main circuit breaker.
PASS
FAIL
PHASE DETECT
(FOR 3 PHASE ONLY)
NE5
NE6
WARNING!
ALL POWER MUST BE TURNED OFF AT THE SOURCE PRIOR TO ADJUSTING PHASING.
9
. Turn off the power (rotate the shaft that engages the handle on the panel door counterclockwise
until it snaps into the OFF position). Also, set the main switch handle on the panel door to OFF.
(Both the handle and the switch must be set to OFF before the door can be closed). Close the
door, lock the latches, and turn the power back on.
