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NFO Drive Sinus Series User Manual

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NFO Drives AB
Box 35, SE-376 23 Svängsta, Sweden
Tel: +46 (0)454-370 29
Fax: +46 (0)454-32 24 14
Email: nfo@nfodrives.se
Internet: www.nfodrives.se
Operating and
installation manual
NFO Sinus
1.5 – 11 kW 400V

Table of Contents

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NFO Drive Sinus Series Specifications

General IconGeneral
BrandNFO Drive
ModelSinus Series
CategoryInverter
LanguageEnglish

Summary

2 Safety aspects

4 Installation

5 Installation and programming

5.3 Operating modes

Describes how to switch between and operate the inverter in different modes.

5.3.2 Programming mode

Explains how to access and modify inverter parameters using the programming mode.

5.4 Parameter specifications

Lists and categorizes all available inverter parameters.

5.5 Autotuning and motor parameters

Guides on setting motor parameters and performing autotuning for optimal performance.

5.6 Setting control parameters

Details how to configure various control parameters for motor operation.

5.6.1 Control mode, parameter Mode

Explains how to select and set the motor control mode (Freque, Speed, Torque, PI Reg).

5.6.2 Acceleration and retardation ramp, parameters Accel and Retard

Configures how fast the motor changes speed, defining acceleration and deceleration times.

5.6.7 Speed regulator, parameters Kp-spd and Ti-spd

Tunes the PI speed regulator for precise RPM control under varying loads.

5.7 RPM control with frequency estimation, Freque mode

Details operation for simpler tasks like fans, controlling motor rotor frequency.

5.8 RPM regulation with speed estimation, Speed mode

Enables precise RPM regulation by compensating for motor slip.

5.9 Torque regulation, Torque mode

Manages motor torque by limiting rotor current, specified as a percentage of nominal torque.

5.10 Process regulation, PI Reg mode

Controls a process variable using feedback, often temperature or pressure.

5.11 Motor safety functions

Monitors motor temperature via thermistor or power calculations for protection.

5.11.1 PTC input

Details connection and configuration for PTC thermistor or Klixon motor protection.

5.11.2 Power monitor

Monitors motor load and temperature to prevent overheating and overload.

5.14 Alarm and fault procedures

Details how the inverter handles alarms and faults, including restart attempts and logging.

5.14.1 Fault log

Explains how to read and manage the saved fault history.

5.14.2 Fault messages

Lists all fault messages, their types, and associated parameters for diagnosis.

6 Brake chopper and power surge regulator

7 Getting started