NFO DRIVES Sinus Optimum Motor Control Installation Guide
Contents
Mechanical installation
When unpacking the inverter, carefully inspect the product and make sure it has not been damaged during transportation. An inverter with cracks, dents or other visual damage shall not be installed.
The inverter must not be installed so that outlet air from another inverter or other equipment blows directly into the inverter air intake. A minimum of 80 mm clearance must be kept above and below the inverter.
All terminals are accessed by opening the plastic cover. To be able to use the snap-and-hold-open functionality of the cover, a free space of 200 mm is required above the inverter.
During installation it is important that no foreign objects, such as cable strands or screws, fall into the inverter as a short circuit may occur. Drilling in chassis or cover is not allowed.
After installation, make sure all grommets at the cable entries are mounted and that the cover is closed and secured with its screws to avoid access to dangerous voltages.
Mounting
- Unscrew the two lower captive screws and loosen the inverter from the backplate.
- Fasten backplate to a vertical surface using four screws. Make sure that the top mounting screws are sufficiently strong to hold the entire weight of the inverter.
- Place the inverter on the backplate by mating the chassis cut-out to the backplate hooks. Tighten the lower captive screws on both sides.
Electrical installation
- Connect mains power to terminals L1, L2, L3 and PE.
- Connect motor cable to terminals U, V, W and PE using standard unshielded cable
Never install contactors or switches between the inverter (terminals U, V and W) and the motor that
intentionally or unintentionally may be used to disconnect the motor from inverter output.
A motor safety switch can be mounted between the inverter (terminals U, V and W) and the motor, but it must only be operated when the motor is not running.
First time powered up, the installer must select application, enter motor name plate data, and perform a motor tuning (see next section).
- Connect/install the necessary low voltage signalling that is required for your application, e.g. a run signal for start/stop, analog input for setpoint, communication, etc.
Make sure run signal is not activated until installer has completed the setup of the inverter.
Make sure the low voltage signal wires have sufficient isolation when passing nearby power cables
Initial setup and tuning
Select application
- First time powered up after installation, or after performing a factory reset of parameters, the installer will be prompted to select application type for the inverter.
- The purpose of selecting application is to preset acceleration and deceleration ramps to a value suitable for the application in question.
- Please note that the preset values are a merely suggested general values. Depending on other operating conditions, the installer may have to further adjust the accel/decel ramps.
| Application | Description |
| Pump | Set acceleration and deceleration ramps suitable for general pump applications |
| Ventilation / other | Set acceleration and deceleration ramps suitable for ventilation fan applications |
| OEM vacuum pump | To be used only with OEM vacuum pump application |
Enter motor data and perform tuning
- First time powered up after installation, or after performing a factory reset of parameters, the installer must enter the motor name plate data. The motor data is entered in the parameter group Motor and consists of P-nom, U-nom, f-nom, N-nom, I-nom and cos . The data can be read from the motor name plate.
- After motor data is entered, the installer must perform a motor tuning during which the inverter measures and calculates the electrical properties of the motor. The tuning command is located in parameter group Motor, adjacent to the motor data values. Select ‘Full’ tuning for most thorough measurement.
- Until a correct tuning is performed, the inverter will toggle the status message ‘Not Tuned’ on the display.
- lease refer to the Operating and Installation Manual for a complete description of the tuning commands. 3.3
Check rotation direction
- After selecting application, entering motor data and performed tuning, it may be necessary to check/verify correct rotation direction of the rotor.
- This can be done by starting the motor at a low speed in manual mode.
- Manual mode is selected when lower right corner of display reads ‘Manual’. Pressing the ‘MAN / AUTO’ button toggles between manual and auto mode.
- Pressing ‘START’ button in manual mode starts the motor.
- Direction of rotation can be changed by changing the parameter ‘Phase order’ in parameter group ‘Run’. The motor must be stopped when changing this parameter.
- Default setpoint frequency in manual mode is 10.0 Hz. If necessary, increment or decrement setpoint using the arrow up/down buttons.
- When ready, press ‘STOP’ and then press the ‘MAN / AUTO’ button to select ‘Auto’ mode. The inverter is now ready to start operating according to the connected control signals
Keyboard and menu summary
| Button | Function |
 |
Enter into parameter or parameter-group. Save parameter. |
 |
Enter/toggle between normal screen and setup menu tree. Leave parameter, parameter-group or leave parameter unsaved. |
 |
Toggle Operating mode between Manual and Auto. Starts motor in Auto mode if Run signal active. |
 |
Starts motor in Manual mode. |
 |
Stops motor in all modes. NOTE: A bus master may start motor at any time |
 |
Increase parameter when changing. Moves between parameter-groups or parameters. |
 |
Decrease parameter when changing. Moves between parameter-groups or parameters. |
| Motor | Ramp | Run | Control | Freq. | Speed | PI-reg | Output | Comm. | Status | Temp. | Display | Count. | Version | Error |
| P-Nom | Accel Time |
Phase Order |
Control Mode |
Op Mode |
Op Mode |
Op Mode |
Relay 1 Mode | RS485 bustype |
Urms | Motor Temp |
Display Par 1 | Operate Time |
COP Version |
Error Log |
| U-Nom | Decel Time |
Stop Mode |
Auto Start |
FixFrq1 | FixSpd1 | FixReg1 | Relay 1 Freq |
RS485 addr |
l-rms | Power Module |
Display Par 2 |
Run Time |
DSP Version |
Restart Delay |
| f-Nom | Ramp Brkpoint |
Energy Save |
An Input1 Type | FixFrq2 | FixSpd2 | FixReg2 | Relay 2 Mode |
RS485 baud |
Pout | COP Temp |
Display Par 3 |
Brake Time |
GUI Version |
Reset Time |
| N-Nom | Alt Accel Time |
Pwr On Delay |
An Input2 Type | FixFrq3 | FixSpd3 | FixReg3 | Relay 2 Freq |
RS485 char |
PF | Heat Sink 1 | Bklight Level |
Cur Um Time |
Prod Date |
AC Fail |
| I-Nom | Alt Decel Time |
Run Delay |
Dig In Config |
FixFrq4 | FixSpd4 | FixReg4 | AnOut 1 Mode |
RS485 timeout |
DC Link | Heat Sink 2 |
Bklight Timeout |
DC Low Time |
Serial Number |
Tem Hi Temp• |
| cos o | Stop Delay |
Limit ManSetp |
FixFrq5 | FixSpd5 | FixReg5 | AnOut 1 Type |
RS485 autostop |
Brake Chop |
Heat Sink 3 |
Menu readonly |
Start Count |
PTC Temp |
||
| Tuning | DC Brake |
F xFrq6 | FbcSpd6 | FixReg6 | AnOut 1 Max |
RS485 failsafe |
Stator Freq |
Heat Sink 4 |
Show freq in % |
Alarm Count |
Over load |
|||
| R-stator | KP Speed |
FixFrq7 | FixSpd7 | FixReg7 | AnOut 2 Mode |
USB bustype |
Rotor Freq |
Fan 1 Volt |
Output Energy |
MA Fail | ||||
| R-rotor | Ti Speed |
An Min Freq |
An Min Speed |
Setpoint Min Val |
AnOut 2 Type |
USB addr |
Control Freq |
Fan 2 Volt |
Total Energy |
DC Low | ||||
| L-main | Sleep Freq |
An Max Freq |
An Max Speed |
Setpoint Max Val |
AnOut 2 Max |
USB timeout |
Rotor Speed |
Fan 3 Volt |
DC High | |||||
| Sigma | Bypass Freq |
Actual Min Val |
Analog1 Out | USB autostop |
Control Speed |
Fan 4 Volt |
GND Fail |
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| I-magn | Bypass Bandw |
Actual Max Val |
Analog2 Out | ABCC interface |
Actual Torque |
EXT 24V |
Short Circuit |
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| I-limit | Boost Time |
Setpoint MM Lim |
ABCC bustype |
Control Torque |
USB 5V |
Imagn Low |
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| Pole Count |
Boost Level |
Setpoint Max Lim |
ABCC addr |
Actual Reg |
Current Low |
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| T-nom | Reg Amp |
ABCC timeout |
Setpoint Reg |
Current High |
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| Tuned status |
Reg Kp |
ABCC autostop |
AnIn1 U | Current Limit |
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| Reg Ti |
Auto Reset |
AnIn1 I | Run Fail | |||||||||||
| MinFreq | AnIn2 U | |||||||||||||
| MaxFreq | AnIn21 | |||||||||||||
| Reg Unit | Key brd | |||||||||||||
| Off Limit | Terminal | |||||||||||||
| On Limit |
