3
After the line voltage is connected to the
machine, make sure that main circuit
breaker (at top-right of rear cabinet) is OFF .
Remove the Lockout / Tagout and Turn ON
the power at the source. Using a digital
voltmeter and appropriate safety
procedures:
1-Phase Machines
: Measure the AC voltage
across L1 & L3 at the main circuit breaker.
The AC voltage must be between 220 - 250
volts .
Note:
Lower or higher than this voltage
can generate low/high voltage alarms.
3-Phase Machines:
Measure the AC voltage
between all three pair phases at the main
circuit breaker. The AC voltage must be
between 195 and 260 volts (360 and 480
volts for high voltage option).
Note:
Wide voltage fluctuations are
common in many industrial areas; minimum
and maximum voltage supplied to a
machine while it is in operation must be
known. U.S. National Electrical Code
specifies that machines should operate with
a variation of +5% to -5% around an average
supply voltage. If problems with line voltage
occur, or low line voltage is suspected, an
external transformer may be used. If you
suspect voltage problems, voltage should be
checked every hour or two during a typical
day to be sure it does not fluctuate more
than +5% or -5% from an average.
GM-2-5AX - Installation Guide
Page 6 of 15 pages
