Schneider Altivar 71 Convertitore di frequenza modello ATV71HC28N4(Z)

Complete Model Interpretation

1. Parametri tecnici fondamentali

III. Core Product Features

1. High Torque Performance: Specifically designed for constant torque loads, with a starting torque of up to 150% of the rated torque, ideal for equipment requiring stable torque output such as cranes, elevators, and conveyor belts
2. Flexible Control Functions: Supports 8 preset speeds, PID regulator, and brake control logic to meet complex motion control requirements
3. Integrated Communication Capability: Built-in Modbus and CANopen communication interfaces; support for industrial networks such as Profibus and Ethernet via expansion cards
4. Comprehensive Protection Mechanism: Equipped with full protection functions including overcurrent, sovratensione, sottotensione, overheating, short circuit, and ground fault protection, effectively safeguarding the frequency converter and motor
5. Easy Maintenance: Built-in diagnostic functions for quick fault location; modular design facilitates repair and component replacement
6. Application Scenarios and Compatible Equipment
7. Main Application Fields:

Hoisting Machinery: Bridge cranes, tower cranes, port cranes, ecc.

Lifting Equipment: Elevators, escalators, mine hoists, ecc.

Material Handling: Belt conveyors, bucket elevators, screw conveyors, ecc.

Other High-torque Equipment: Packaging machinery, woodworking machinery, high-inertia load equipment

2. Not Suitable For:

Light-load or fan/pump type variable torque applications (the ATV71D series is recommended)

Unprotected outdoor installation (additional protective enclosures are required)

Scenarios requiring frequent braking (external braking units need to be configured separately)

1. Key Selection and Usage Precautions
2. Model Differentiation:

ATV71HC28N4: Equipped with a basic operation panel, no graphic terminal

ATV71HC28N4Z: Explicitly marked without a graphic terminal, with the same configuration as the above model

ATV71HD28N4: Constant torque version with a graphic terminal

2. Installation Requirements:

Must be installed inside an electrical control cabinet with IP20 protection class

Sufficient heat dissipation space must be reserved (more than 100mm on all sides: top, bottom, left and right)

An input reactor is recommended on the input side to reduce harmonic interference

3. Accessory Purchase:

Graphic Display Terminal: VW3A1101 (applicable to models without the Z identifier)

Braking Unit: VW3A3520 (applicable to scenarios requiring frequent braking)

Communication Expansion Cards: VW3A3306 (Profibus DP), VW3A3310 (Ethernet), ecc.

1. Product Status Description

This model was discontinued on March 31, 2020. Schneider recommends the ATV930 series as a replacement product (model ATV930C28N4Z), which features more advanced control algorithms, higher energy efficiency, and more comprehensive communication functions.

Installazione, Wiring Guide and Troubleshooting Manual for Schneider ATV71HC28N4(Z) Frequency Converter

1. Key Installation Guidelines

1.1 Preparazione pre-installazione

Safety Prerequisites: Only operated by certified electricians. Disconnect all power supplies before installation and wait for 15 minutes to allow the DC bus capacitors to discharge completely (voltaggio < 45Vdc)

Requisiti ambientali:

Temperatura: -10°C to +40°C (derate by 1% for every 1°C increase above 40°C)

Humidity: 5%-95% without condensation

Altitudine: ≤1000m (derate by 1% for every 100m increase above 1000m)

Protection Class: IP20 (cabinet installation), ensure good ventilation

Tool Preparation: Multimeter, 1000V megohmmeter, torque wrench, crimping tool, nastro isolante

1.2 Mechanical Installation

Metodo di installazione: Must be installed vertically, with 150mm heat dissipation space reserved on all sides (top, bottom, left and right)

Fixing Requirements: Secure with M12 bolts at a torque value of 50Nm to ensure stability and no vibration

Cooling System:

Equipped with built-in fan cooling; ensure air inlets are unobstructed

Clean dust in the air duct regularly (every 3 months)

Install external cooling equipment when the ambient temperature exceeds 40°C

1.3 Electrical Connection (Core Steps)

Connection Notes:

1. Route input and output cables separately (distance ≥300mm) per evitare interferenze elettromagnetiche
2. Use shielded cables for control circuits, with the shield layer grounded at one end (on the frequency converter side)
3. Perform a tensile test on all terminal connections to ensure no looseness
4. Install a surge suppressor on the motor side (optional)

1.4 Cablaggio del circuito di controllo

Basic Control Circuit:

Connect the start (DI1), fermare (DI2), and forward/reverse (DI3) terminals

Ensure the emergency stop circuit is independent of the frequency converter control

Communication Connection:

Modbus: Connect to RS485 terminals (+, -) with a baud rate of 9600-19200bps

Profibus: Install the optional VW3A3407 communication card

1. Wiring Inspection and Commissioning Process

2.1 Wiring Inspection

1. Insulation Test:

Insulation resistance between input/output terminals and ground ≥1MΩ (tested with 1000V megohmmeter)

Motor winding insulation resistance ≥1MΩ

2. Continuity Test:

Check that there is no short circuit between input and output terminals

Verify normal continuity of control circuit terminals

3. Parameter Setting:

Restore factory settings (P0.01=1)

Set motor parameters (P1.01-P1.07): rated power, voltaggio, attuale, frequency

Set control mode (P2.01=0: V/F control; =1: vector control)

2.2 Commissioning Steps

1. No-load Commissioning:

Disconnect the motor, start the frequency converter, and check for balanced output voltage

Test the frequency adjustment range (0-60Hz)

2. Loaded Commissioning:

Connect the motor, set acceleration time (P4.01=10s) and deceleration time (P4.02=15s)

Gradually load up to 100% and check for normal current and temperature

Test overload capacity (150% of rated current for 60 seconds)

1. Troubleshooting Manual

2.1 Fault Diagnosis Process

1. Fault Identification: Record fault codes, operating status at the time of fault, and parameter settings
2. Preliminary Inspection:

Power off and check for loose wiring and insulation damage

Inspect the cooling system and dust in the air duct

Measure power supply voltage and motor insulation

3. Targeted Troubleshooting: Identify causes based on fault codes
4. Solution Implementation: Repair or replace faulty components
5. Verification Test: Conduct trial operation after fault elimination to confirm no abnormalities

2.2 Common Fault Codes and Solutions (Core Content)

2.3 Advanced Troubleshooting

Parameter Faults:

When “Invalid Setting” is displayed, press the ENT key twice to restore factory parameters

When parameters are corrupted, restore factory settings via P0.01=1

Communication Faults:

Check for loose communication cable and connectors

Confirm that baud rate and address settings match the host system

Test communication module and replace faulty modules

Hardware Faults:

Power Module Fault: Measure DC bus voltage (normal range: 540-600V)

Control Board Fault: Inspect indicator lights and replace control board if necessary

Driver Board Fault: Replace driver board and perform re-commissioning

III. Maintenance Schedule