3122A-403-4-00
May 18, 2026

3122A-403-4-00

Brand: SEW-EURODRIVE Model: 3122A-403-4-00 Series: MOVITRAC 31 Series Product Type: Three-phase Input AC Variable Frequency Drive

Description

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1. Model Code Definition

3122A : 31 series, rated power 22kW, standard version A
403 : 230V low voltage grade
4 : Three-phase AC power input
00 : Standard original factory configuration

2. Core Electrical Parameters

  • Rated Output Power: 22 kW

  • Input Voltage: 3-phase AC 200~240 V (Nominal 230 V)

  • Input Frequency: 50 Hz / 60 Hz

  • Rated Output Current: 85 A

  • Output Voltage Range: 0 ~ 230 V three-phase AC

  • Output Frequency Range: 0 ~ 400 Hz

  • Control Mode: V/F open-loop control

  • Overload Capacity: 150% rated current for 60 seconds, 125% long-term operation

  • Switching Frequency: 2~16 kHz adjustable

  • Full-load Power Factor: ≥0.95

  • Operational Efficiency: ≥97%

3. Physical & Environmental Specifications

  • Protection Class: IP20

  • Cooling Mode: Built-in high-efficiency fan forced air cooling

  • Operating Ambient Temperature: 0 °C ~ +45 °C

  • Storage Temperature: -25 °C ~ +70 °C

  • Working Humidity: 5%~95%, non-condensing environment

  • Installation Method: Vertical wall-mounted installation

  • Maximum Applicable Altitude: ≤1000m without power derating

  • Vibration Resistance: Adapt to ordinary industrial vibration environment

4. Built-in Control Interfaces

  • Standard onboard RS485 communication interface, support Modbus RTU protocol

  • 0-10V DC analog speed regulation input terminal

  • Multi-group programmable 24V DC digital input terminals

  • Programmable relay signal output terminals

  • PTC motor over-temperature protection access interface

  • External dynamic braking resistor matching interface

  • Multi-section fixed speed control terminals

5. Main Operating Functions

  • Acceleration and deceleration time adjustable freely within 0.1~600 seconds

  • Integrated dynamic braking and DC braking function for fast stop

  • Intelligent energy-saving operation mode, automatically optimize light-load operation

  • Three control modes: local panel operation, external terminal control, remote communication control

  • Speed slip compensation function to improve load operation speed stability

  • Soft start and soft stop function to reduce mechanical impact and starting current

  • Built-in PID constant pressure and constant speed automatic control function

  • Support parameter copying, saving and restoring functions

6. Complete Safety Protection System

  • Instantaneous overcurrent and thermal overload protection

  • Overvoltage and undervoltage protection

  • Three-phase input phase loss detection protection

  • Inverter internal module over-temperature protection

  • Electronic thermal motor overload protection

  • Output terminal short circuit protection

  • Motor side ground fault protection

  • Running stall prevention protection

  • Control terminal anti-static and reverse connection protection

7. Installation & Wiring Specifications

  1. Cut off the total power supply before all wiring and maintenance operations

  2. Power main circuit cables and control signal cables must be laid separately to avoid electromagnetic interference

  3. The equipment PE grounding terminal must be reliably connected to the factory general grounding wire

  4. Reserve sufficient ventilation and heat dissipation space around the inverter, keep upper and lower gaps

  5. It is forbidden to install in dusty, humid, oil mist and strong corrosive gas sites

  6. It is recommended to use shielded special motor cables for connecting motors to reduce frequency conversion interference

8. Standard Commissioning Steps

  1. Carefully check all wiring to eliminate wrong wiring and hidden short circuit risks

  2. Confirm that the on-site input power voltage is consistent with the inverter rated voltage

  3. Set basic motor parameters: rated voltage, rated current, rated frequency and rated speed

  4. Select the corresponding operation control mode according to actual production requirements

  5. Complete acceleration and deceleration time, upper and lower limit frequency setting

  6. First perform no-load trial operation to check motor running direction and running sound

  7. After confirming stable no-load operation, gradually load and put into formal production operation

9. Daily Maintenance & Inspection Guidelines

  • Regularly clean cooling fan and internal accumulated dust every 3-6 months

  • Periodically check whether all power terminals and control terminals are loose

  • Real-time monitor operating current and internal operating temperature during operation

  • Replace aging and abnormal noise cooling fans in time

  • Professional certified electricians must be arranged for equipment fault inspection and maintenance

10. Main Application Scope

High-power three-phase asynchronous motor speed regulation control
Heavy-duty logistics and industrial conveying equipment
Large industrial fans, water pumps energy-saving frequency conversion speed regulation
Textile, printing, packaging, woodworking heavy industrial machinery
Main driving transmission system of large automated production lines
All kinds of industrial equipment needing stable variable speed drive

11. Industry Compliance Certification Standards

Pass EU CE low voltage safety certification
Meet EN61800-3 industrial EMC electromagnetic compatibility standards
Comply with RoHS environmental protection material use standards
Meet international general industrial frequency converter design and use specifications


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