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NFX9000 Adjustable Frequency Drives
MN04002003E
For more information visit: www.EatonElectrical.com
2-3
February 2006
Figure 2-3: Control Circuit Wiring
Wiring Notes
WARNING
Ensure that all screws are tightened to the proper torque rating.
CAUTION
Do not connect the AC input to any of the U/T1, V/T2 or W/T3
terminals as it will damage the drive.
Multiple NFX9000 drives can be installed in one location. Please read the following prior to
installation:
1. Follow all national and local electrical, construction and safety codes during installation.
2. Ensure the appropriate protective devices (circuit breaker or fuses) are connected
between the power supply and drive.
3. Make sure the leads are connected correctly and the drive is properly grounded.
(Ground resistance should not exceed .1
Ω.)
4. Use ground leads that comply with AWG/MCM standards and keep them as short as
possible.
5. For multiple drive installations, make sure to ground all units directly to a common
ground terminal. The ground terminals may be connected in parallel as shown in
Figure 2-4. (Ensure there are no ground loops.)
Figure 2-4: Ground Terminals Connected in Parallel
RA
Wire Gauge: 22 – 24 AWG
Torque: 4 Kgf-cm
RC +10V AVI D1
Common Signal
Multi-Function Input Selection 3
Multi-Function Input Selection 2
Multi-Function Input Selection 1
Multi-Function Assistant Terminal
Multi-Function Indication Output
Contact (120V AC/DC 28V 3A)
Relay
Analog Voltage, Current Frequency
Command
Power for Speed Setting
D2 D3 D4 GND
Forward
Running
Parallel –
Acceptable
Ground Loops
Not Acceptable
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