Frequency Inverters

RNB2000

High-performance vector frequency inverter supporting both 3-phase AC asynchronous and permanent magnet synchronous motors, with strong dynamic performance and overload capacity for demanding automated production applications.

Input VoltageThree-phase AC 380V, 50/60Hz

Output Frequency0 ~ 600 Hz

Control ModeV/F, Open-loop Vector, Closed-loop Vector, Torque

Overload Capacity150% / 60s; 180% / 10s; 200% / 1s

Protection LevelIP20

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Product Details

OVERVIEW

The RNB2000 Series is a high-performance vector frequency inverter capable of driving both 3-phase AC asynchronous motors and 3-phase AC permanent magnet synchronous motors.

It demonstrates strong dynamic performance and overload capacity for torque and speed control with low-speed high-torque output. The inverter supports various I/O extension cards, PG cards, and communication cards, making it suitable for automated production equipment and lines.

RNB2000

DSP Platform

Uses a TI (USA) next-generation digital signal processor for motor control with a main frequency reaching 150MHz.

4th-Generation IGBT

Employs Infineon (Germany) 4th-generation IGBT with a 175°C highest junction temperature, enabling operation without derating in environments up to 50°C.

Dual Motor Support

Supports both AC asynchronous and AC permanent magnet synchronous motors. Two groups of motor parameters can be preset and switched between via communication or terminals.

V/f Current Limiting

Under V/f mode, high-precision current limiting prevents overcurrent alarms during fast acceleration/deceleration or locked rotor conditions.

Vector Torque Limiting

Under vector control, high-precision torque limiting allows the drive to output strong or soft torque to protect mechanical equipment.

V/f Separation Control

Output frequency and output voltage can be set independently, applicable to frequency conversion power supplies and torque motor control.

Smart Extension Interface

Allows simultaneous connection of two extension cards to meet specialized industry control requirements.

Off-Shaft PG Vector Control

PG vector control is achievable when the encoder is not at the shaft end, provided the deceleration ratio between that axis and the motor axis is fixed.

Speed Search

Accurate and reliable speed search enables no-impact smooth start of a rotating motor.

Process PID Control

Features multiple giving/feedback modes with two groups of PID parameters freely switchable. Supports positive/negative action and is especially applicable to fan and pump energy saving.

DC Bus Input

Accepts DC power input, enabling common DC bus configurations across multiple drives.

Overvoltage Stall Protection

During fast deceleration of large-inertia loads, instantaneous output frequency adjustment reduces the probability of overvoltage tripping.

Undervoltage Adjustment

On instantaneous undervoltage or power failure, automatic frequency reduction maintains DC bus voltage for short-duration continuous operation, suited for fans and pumps.

Overcurrent Stall Protection

During fast acceleration of heavy loads, instantaneous frequency adjustment reduces the probability of overcurrent tripping.

Low Frequency Oscillation Suppression

Suppresses acute oscillation during no-load or light-load start of large motors to prevent fault tripping.

Wave-by-Wave Current Limiting

Automatically limits output current before overcurrent faults occur during heavy-load start or abrupt load increases.

SPECIFICATIONS

MAIN POWER INPUT

3 SPECS

01Rated Voltage

Three-phase AC 380V, 50/60Hz

02Voltage Tolerance

380V ±20%

03Frequency Tolerance

±5%

MAIN POWER OUTPUT

2 SPECS

01Rated Voltage

0 ~ rated input voltage

02Output Frequency

0Hz ~ 600Hz

BASIC FEATURES

16 SPECS

01PWM Mode

SVPWM; 3-phase and 2-phase modulation

02Control Mode

V/F control; open-loop vector; closed-loop vector (with PG); torque control

03Motor Types

AC asynchronous; AC permanent magnet synchronous

04Operation Command Source

External terminals, keypad/panel, communication

05Speed Command Source

Analog, keypad, communication, high-speed pulse, multistage terminal speed, PID, simple PLC

06Speed Control Range (open-loop vector, async)

1:200

07Speed Control Range (open-loop vector, sync)

1:20

08Speed Control Precision (open-loop vector)

±0.2%

09Speed Fluctuation (open-loop vector)

±0.3%

10Torque Response (open-loop vector)

<20ms

11Torque Control Precision (open-loop vector)

10%

12Start Torque (async, open-loop vector)

0.25Hz / 150%

13Start Torque (sync, open-loop vector)

2.5Hz / 150%

14Overload Capacity

150% for 60s; 180% for 10s; 200% for 1s

15Auto Voltage Adjustment

Maintains constant output voltage when grid voltage changes

16Speed Search Start

Smooth no-impact start of rotating motor

CONTROL TERMINAL INPUT

5 SPECS

01Internal +10VDC Power

1 route, max 50mA (for potentiometer)

02Internal +24VDC Power

1 route, max 200mA (for logic input)

03Analog Input

2 routes: 0~10VDC or 0/4~20mA DC; 1 route: -10~+10VDC

04Digital Input

9 programmable logic inputs; NPN/PNP supported; 39 selectable functions

05Pulse Input

2 high-speed pulse inputs (0~50KHz); usable as switching input, speed reference, or encoder input

CONTROL TERMINAL OUTPUT

4 SPECS

01Analog Output

2 routes; 0~10VDC or 0~20mA DC, selectable

02Digital Output

1 programmable NPN open-collector output; 20 selectable functions

03Pulse Output

1 high-speed pulse output; usable as switching output; 13 selectable functions

04Relay Output

2 routes; 1 NO + 1 NC each; 250VAC/3A, 30VDC/1A

COMMUNICATION INTERFACE

2 SPECS

01Standard

RS485; Modbus protocol

02Extended Options

Profibus DP, CANopen, Ethernet TCP/IP

OPERATION PANEL

3 SPECS

01Display

State parameters, fault codes, parameter setting; default digitron; LED panel optional

02Indicators

State lamp (operation status); unit lamp (data unit)

03Parameter Copy

Upload to panel for storage; download from panel to drive

FAULT PROTECTION

2 SPECS

01Protection Types

25 types

02Protection Functions

Output overcurrent, bus overvoltage, bus undervoltage, motor overload, inverter overload, input phase loss, output phase loss, rectifier overtemperature, inverter overtemperature, external fault, communication fault, current detection fault, motor self-learning fault, EEPROM fault, PID feedback failure, braking unit fault, factory setting time arrival

SPECIAL FUNCTIONS

1 SPEC

01Functions

Parameter copy/backup, common DC bus, dual motor parameter switching, speed tracking, swing frequency control, fixed-length control, counting, pre-excitation, overcurrent/overvoltage stall, restart after power-off, skip frequency, 4-stage acceleration/deceleration, motor overtemperature protection, flexible fan control, process PID, simple PLC, drooping control, parameter discrimination, flux weakening control, high-precision torque control, V/f separation control

ENVIRONMENT & INSTALLATION

10 SPECS

01Standards

IEC/EN61800-5-1 (low voltage); IEC/EN61800-3 (EMC)

02Installation Location

Indoors; altitude <1000m; no dust, erosive gas, or direct sunlight

03Operating Temperature

-25°C ~ 40°C (no derating); 40°C ~ 50°C: derate 1% per °C

04Storage Temperature

-40°C ~ +70°C

05Altitude

0~2000m; derate 1% per 100m above 1000m

06Humidity

5%~95%; no condensation or dripping

07Vibration

<5.9 m/s² (0.6g)

08Protection Level

IP20

09Cooling Method

Forced air

10Installation Method

0.75~315kW wall-mounted; 350~500kW floor-standing

Use Cases

APPLICATIONS

Engineered for demanding environments across multiple industries and operating conditions.

01Automated Production Lines

02Fans & Pumps

03Conveyors & Lifters

04Compressors

05Machine Tools

06Torque Motor Control

REQUEST A QUOTE

Contact Athena Control for pricing, availability, and technical support for the RNB2000.