Schneider VW3A3407 Encoder Interface Card – ATV61/71 Series VFD Spare – Tested

Product Overview

Original Schneider VW3A3407 encoder interface card (PG card) for Altivar ATV61 and ATV71 series drives. This option card provides encoder feedback interface for flux vector control (FVC) operation with asynchronous motors, or speed feedback (FSY mode) vector control operation with synchronous motors. The card features push-pull outputs, 24V DC supply, and supports up to 300kHz operating frequency.

Key Features

• Genuine Schneider original – VW3A3407 encoder interface card (PG card)
• Compatible with Altivar 61, 61Q, 71, 71Q, and Altivar Lift series drives
• Push-pull output type – 24V DC supply (voltage limits: 20–30V)
• Maximum operating frequency: 300 kHz
• Input signals: A, B, complement of A, complement of B / AB / A
• Input impedance: 1000 Ohm
• Supports flux vector control (FVC) with sensor for asynchronous motors
• Supports speed feedback (FSY mode) vector control for synchronous motors
• Overload protection and short-circuit protection integrated
• Maximum cable distance: 500 m
• Electrical connection: terminal, 0.2 mm² (AWG 24)
• Maximum supply current: 0.175 A
• Original pulled – no repair history

Specifications

Compatibility Note

• Compatible with Schneider Altivar 61, 61Q, 71, 71Q, and Altivar Lift series drives
• This is an encoder interface card (PG card) – provides encoder feedback for vector control
• Used for flux vector control (FVC) with sensor for asynchronous motors
• Used for speed feedback (FSY mode) vector control for synchronous motors
• Number of pulses per revolution varies by drive model:
• 10000 pulses for ATV71H……383 series
• 5000 pulses for all ATV61 drives
• 5000 pulses for ATV71H…M3, M3X, and N4 series
• CRITICAL: Nameplate photo required – verify drive model to ensure correct pulse count compatibility
• If mismatched: Incorrect encoder feedback configuration may result in unstable motor operation, speed control errors, or drive faults
• Verify drive model and original board marking before ordering
• Send drive nameplate photo for accurate matching

Quality Assurance

• Original pulled from working drive; tested functional with no repair history
• Actual photos sent before shipping
• Test video available upon request
• ESD anti-static packaging