VW3A3424

What does this encoder interface module do in an Altivar drive system?

It enables an Altivar drive to accept feedback from an HTL (high-threshold logic) incremental encoder, allowing the drive to use encoder signals (A/B and their complements where available) for applications that require feedback-based control.

Which drive ranges is it compatible with?

It is designed for use with Schneider Electric Altivar drives in the Altivar Process ATV900 range, Altivar Process Modular, and Altivar Machine ATV340 range.

What type of encoder signals can it accept?

It supports HTL incremental encoder inputs including push-pull and open-collector signal types. Supported signal formats include differential A/\A and B/\B (A/AB/B) as well as single-ended A or AB, depending on the encoder output style.

What encoder supply voltages are supported?

The module supports encoder supply operation at 12 V DC, 15 V DC, or 24 V DC (set via the drive’s configuration).

How much current can it provide for the encoder supply?

Maximum encoder supply current depends on the selected supply voltage: 0.2 A at 12 V DC, 0.175 A at 15 V DC, and 0.1 A at 24 V DC.

What is the maximum operating frequency for encoder input signals?

The maximum operating frequency is up to 300 kHz, supporting high-speed encoder pulse trains when properly installed and wired.

What is the maximum cable distance between the encoder and the drive?

The maximum cable distance between devices is specified as up to 500 m. Practical distance depends on encoder type, supply voltage, cable construction, and conductor size.

Does it support differential encoder wiring?

Yes. It supports differential encoder channels (A+ / A- and B+ / B-) for A/AB/B differential input, which can improve noise immunity compared with single-ended wiring.

Does it work with open-collector encoders (PNP or NPN)?

Yes. It supports open-collector encoder outputs, including PNP and NPN variants for A and/or AB configurations, provided the encoder output type is wired to the appropriate reference (0 V or V+) as required for that output style.

What kind of connector does the module use?

It uses one removable spring connector, intended to simplify installation and secure wiring in control cabinets.

What protections are built into the module?

It includes short-circuit protection and overload protection to help protect the interface and connected circuitry under fault conditions.

What is the approximate weight of the module?

Net weight is approximately 0.15 kg (about 0.33 lb). For reference, the Schneider VW3A3424 is a compact option module designed to fit within the Altivar drive option architecture.