NFO Sinus- Quick installation guide ver. 2.3 Page 2 (4)
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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 φready. Motor data can usually be found marked on the motor otherwise
contact your motor supplier. Use correct data for Y or D-connection.
•Press PROG to enter program mode.
•Scroll (if necessary) with FWD or REV until it reads ParGroup / Motor, then
select parameter group with ENTER.
oUse FWD or REV to scroll between motor parameters
oChange value by pressing up/down button or SHIFT + up/down button
(change occurs more rapidly). Press ENTER to set value.
oRepeat until P-Nom, U-Nom, f-Nom, N-Nom, I-Nom and cos φ
all match motor data.
•Scroll until it reads Tuning in display.
oPress up-button and when asked Tuning full? Press ENTER.
oWait until display reads Tuning Ready, otherwise consult operating
manual.
oR-stat, R-rot, L-main, Sigma, I-magn and I-limit are now tuned.
4 Motor start
•Press PROG twice, once to exit parameter group, twice to exit program mode.
Press STOP to enter local mode (see Operating/Programming mode).
•Check the motor’s direction of rotation by pressing FWD (motor rotates whilst the
button is pressed). If the motor moves in the wrong direction, change two of the
output motor phases on the inverter, e.g. U – V.
•By pressing SHIFT + FWD in local mode, the inverter continues to run at the
frequency shown in the display without the button needing to be held in. The
frequency can be changed during use with the up/down button or SHIFT +
up/down button (change occurs more rapidly). To stop the motor, press STOP.
•Change to external mode, i.e. normal operating mode by first holding down SHIFT
and then pressing STOP at the same time. (Please note that the motor will start if
other start conditions are met) To stop the motor and change to local mode, press
STOP.
•The motor current can be controlled by the I-rms parameter under the Status
parameter group.
•If the motor rotates upon start up due to natural draught, adjust the DC current
brake function before start with the DC-Brk parameter.
•If the motor is run with low load at certain frequencies (e.g. fan operation) the
EnergySave function will reduce the motor’s power consumption.
Recommended fuses
Recommended slow blowing fuses for 3-phase supply, 400V:
0.37kW 0.75kW 1.5kW 2.2kW 3kW 4kW 5.5kW 7.5kW 11kW 15kW
6 A 6 A 6 A 10 A 10 A 16 A 16 A 25 A 35 A 35 A
Figure 2. Recommended fuse sizes
