Frequency Inverters

RNB1000

Compact, high-reliability frequency inverter for 3-phase squirrel cage asynchronous motors, covering manufacturing and transportation applications from fans and pumps to machine tools and conveyors.

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

Output Frequency0 ~ 600 Hz

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

Protection LevelIP20

CoolingForced air cooling

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Product Details

OVERVIEW

The RNB1000 Series frequency inverter is designed for 3-phase squirrel cage asynchronous motors, offering compact structure and high reliability across a wide range of industrial applications.

Built for the demands of manufacturing and transportation industries, the RNB1000 supports V/F control, open loop vector, and torque control modes with advanced protection and communication capabilities.

RNB1000

Compact, high-reliability frequency inverter for 3-phase squirrel cage asynchronous motors, covering manufacturing and transportation applications from fans and pumps to machine tools and conveyors.

Current Limiting (V/f mode)

The driver gets rid of overcurrent alarm no matter in fast acceleration/deceleration or during locked rotor.

Torque Limiting (Vector mode)

High-precision torque limiting control allows the driver to output strong or soft torque.

V/f Separation

Output frequency and output voltage can be set separately, applicable to variable frequency power supply and torque motor control.

Speed Search

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

Process PID

Two groups of proportion, integration and differential parameters can be switched freely. Especially applicable to energy saving of fans and pumps.

DC Power Input

Supports input of DC power and enables the user to arrange application of a common DC bus.

Overvoltage Stall Protection

Instantaneous adjustment of output frequency can reduce the probability of overvoltage tripping.

Undervoltage Adjustment

DC bus voltage remains constant depending on the automatic reduction of output frequency.

Overcurrent Stall Protection

During fast acceleration of heavy load, the instantaneous large slip may result in overcurrent fault. This function prevents nuisance tripping in such conditions.

Low Frequency Oscillation Suppression

During no-load or light load start of large power motors, acute oscillation may occur. This feature actively suppresses such oscillation.

Automatic Torque Boost

Automatically adjusts output torque according to the state of the load, applicable to light load, no-load and even overload start.

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

01Output Voltage

0 ~ rated input voltage

02Output Frequency

0Hz ~ 600Hz

TECHNICAL CHARACTERISTICS

9 SPECS

01PWM Method

SVPWM, three-phase and two-phase modulation

02Control Method

V/F, open loop vector, torque control

03Running Command Setting

External terminal, keyboard panel, serial communication

04Speed Command Setting

Analog, keyboard, serial, high-speed pulse, multi-stage, PID, simple PLC

05Speed Control Range (open loop vector)

1:100

06Speed Control Accuracy (open loop vector)

±0.5%

07Overload Capacity

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

08Auto Voltage Adjustment

Keeps output voltage constant when grid voltage changes

09Speed Search Start

Smooth start without impact on rotating motor

CONTROL TERMINAL INPUT

5 SPECS

01Internal Power Supply

+10VDC (max 50mA); +24VDC (max 200mA)

02Analog Input Ch1

0~10VDC or 0/4~20mA DC

03Analog Input Ch2

-10~+10VDC

04Switch Input

8 programmable logic inputs, NPN/PNP, 39 selectable functions

05Pulse Input

1 high-speed input, 0~50KHz range

CONTROL TERMINAL OUTPUT

4 SPECS

01Analog Output

2 channels, 0~10VDC or 0~20mA DC (optional)

02Switch Output

2 programmable NPN open-collector outputs, 20 selectable functions

03Pulse Output

1 high-speed NPN open-collector, 13 functions optional

04Relay Output

2 channels, normally open + normally closed; 250VAC/3A, 30VDC/1A

COMMUNICATION

2 SPECS

01Interface

RS485

02Protocol

Modbus

OPERATION PANEL

4 SPECS

01Display

Digital tube or LCD panel; shows status, fault codes, parameters

02Indicator Lights

Status and unit indicators

03Keys

Inverter control and parameter setting

04Parameter Copy

Upload/download user parameters between panel and machine

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 overheating, inverter module overheating, external fault, communication fault, current detection fault, motor auto-learning failure, EEPROM failure, PID feedback disconnection, braking unit failure, factory time arrival, and others

ENVIRONMENT & INSTALLATION

10 SPECS

01Standards

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

02Installation Location

Indoor; altitude < 1km; dust-free, no corrosive gas or direct sunlight

03Operating Temperature

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

04Storage Temperature

-40°C ~ +70°C

05Altitude

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

06Humidity

5%~95%, no condensation

07Vibration

< 5.9 m/s² (0.6g)

08Protection Level

IP20

09Cooling Method

Forced air cooling

10Installation Method

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

Use Cases

APPLICATIONS

Engineered for demanding environments across multiple industries and operating conditions.

01Fans & Pumps

02Machine Tools

03Ceramic Machinery

04Woodworking Machinery

05Packing & Printing Machinery

06Conveyors & Lifters

REQUEST A QUOTE

Contact Athena Control for pricing, availability, and technical support for the RNB1000.