W
ARRANTY
I
NITIATION
D
OCUMENTS
SERVING THE METAL CUTTING INDUSTRY SINCE 1973
1400 MILL LANE • WACONIA• MN 55387
T
EL: 952.442.6455 • FAX: 952.442.6457
www.milltronics.net
Arc flash and shock hazard. Follow ALL requirements in NFPA 70E for safe work practices and
for Personal Protective Equipment before opening electrical cabinet or performing adjustments or
diagnostic measurements while energized.
Only qualified personnel should attempt to take current and voltage readings or perform service.
See the safety checklist on page 2 for qualifications.
Check the Power
Check incoming power at line side of disconnect switch
1.
Gnd - L1 L1 – L2
Gnd - L2
L1 – L3
Gnd - L3 L2 – L3
ENSURE THAT THE "WILD LEG" IS WIRED TO L2 IF APPLICABLE.
2. Check to be sure the machine power is sourced directly from the power breaker box,
and that the breaker and wire size are appropriate.
3. Make sure the machine is wired to the GND line from the plant AC distribution
system by a copper wire equal to or greater in size than the power feed wires. Milltronics does
not allow the use of a separate ground rod, conduit, or wire raceways to be used as a
ground source. In terms of machine operation and reliability, nothing may be more important
than the machine being bonded to a good ground source.
Without a transformer, this wire must connect from our “G” ground directly to the electrical
service box ground. Never can the ground be derived from conduit or an unproven ground
source. If using a transformer, refer to the transformer grounding information attached.
POWER THE MACHINE DOWN!
4. Check internal transformer for proper wiring to accept incoming power based upon
the readings above. Change tapping to match.
CAUTION DANGEROUS VOLTAGES EXIST FOR NEXT 4 STEPS!
Turn on the main power at the disconnect switch but DO NOT ENABLE THE DRIVES!
1. Check +24 VDC. Measure between terminal blocks 12 & 22
2.
Check +5 VDC. Measure between + and – V pins on the 5 VDC power supply.
3.
Check 110v AC on the secondary side of the 110 transformer, or between terminal
blocks 1 & 2.
VAC (The secondary AC voltage must be between 110 and 125 VAC )
4.
Check parameters against the list shipped with the machine
To access parameters, enter PARAMS-SETUP-LEVEL at the front panel, then type "PROTO3"
ENTER "3" ENTER.
!! CAUTION !!
HIGH VOLTAGE
EXISTS HERE.
2
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