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Quick installation guide
for motor operation with analogue set point in 400 V
50/60 Hz mains
For full instructions please see the Operating and installation manual.
1. Connection of power supply and motor
See Safety Aspects and Installation and Ventilation
Connect the power cable's phase conductors to terminals L1, L2 and L3 in the motor
controller. The earth must be connected to PE. See Recommended fuses.
•
Connect the motor cable to terminals U, V and W in the motor controller. The earth
is connected to PE. Note if motor is Y or D-connected. A 400V Y/ 230V D motor
must be Y-connected and a 690V Y/400V D must be D-connected.
•
Any thermo contact or thermistor should be connected to terminals 25 and 21. A
resistance of 3.9 kΩ, min 1/4W, must also be connected between terminals 25 and
20.
2 Connecting control signals
•
Connect the analogue control signal to terminals 3 and 23 for set point 0/2-10 V, or
terminals 10 and 2 for set point 0/4-20 mA.
•
Close terminals 5 and 1 for the start/run signal.
•
The main alarm signal is connected to the fault relay output, terminals 8, 17 and
28. Terminals 17 and 28 are closed upon alarm.
•
Any run indicator is connected to terminals 7, 16 and 27. Terminals 16 and 7 are
closed during operation.
•
The factory setting for the inverter's set point is 0-10 V. To alter the set point,
change the AinSet parameter as per table 7 in the user manual.
WARNING! If there is a run signal to the inverter (terminals 5 and 1 connected), the
inverter will start at power up. This can be avoided by changing the AutoSt parameter.
Figure 1. Example of connection
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Summary of Contents for NFO SINUS G2
- Page 1 Quick installation guide for motor operation with analogue set point in 400 V 50/60 Hz mains For full instructions please see the Operating and installation manual. 1. Connection of power supply and motor See Safety Aspects and Installation and Ventilation Connect the power cable’s phase conductors to terminals L1, L2 and L3 in the motor controller.
- Page 2 ® NFO Sinus 3 Tune motor parameters NOTE: This step is needed in order to run the motor correctly. • Have motor data P-Nom (kW), U-Nom (V), f-Nom (Hz), N-nom (rpm), I-Nom (A) and cos φ ready. Motor data can usually be found marked on the motor otherwise contact your motor supplier.
- Page 3 • External mode. Programming mode is used when altering parameters in NFO Sinus, Local mode is used to run the controller from the front panel (Manual position) and External mode is for running in normal operating mode, e.g. from external control (Auto position).
- Page 4 Alteration or change of inverter parts or its accessories will invalidate the inverter’s guarantee. Always contact NFO Drives AB if alterations or changes are necessary. Please note: The components in the power unit and certain components in the signal unit are powered when the inverter is connected to the power supply.
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