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2.9
Preliminary Checks
Once the typical amplifier system has been installed and wired in, follow the steps below to
ensure proper operation before the main power is applied.
2.9.1
Checking AC Input Voltage
Open the circuit breaker or remove the fuses in the secondary of the large 3-phase isolation
transformer.
Apply power. With an AC voltmeter, check the 3-phase secondary line-to-line voltage. The
voltage should be approximately 230 V
Remove power. Close the circuit breaker or replace the fuses in the secondary of the large
3-phase isolation transformer.
2.9.2
Checking the Typical Power Supply DC Output Voltage
Do not apply the 115 VAC. Apply power to the large 3-phase transformer only. With a DC
voltmeter, monitor the 325 VDC bus bars of the power supply and amplifier units. The voltage
from the power supply should be approximately ±325 VDC ±10%. Remove power.
2.9.3
Zero System Resolver
To Adjust the System Resolver to zero:
1. Remove power.
2. Remove the motor end cover.
3. Loosen, but do not remove the resolver servo clamp screws.
4. Rotate the outer member of the resolver as needed for adjustment.
5. Replace and cover. All bolts must be tightened securely before applying power to the
motor or resolver.
±10%.
RMS
Do not remove the cover while the motor is in a hazardous location.
EB-60X Installation & Service Manual | Wiring
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