The VW3A3E405 is an Altivar-series encoder interface card with push-pull discrete output, designed to handle incremental encoder signals (A, B, Compliment of A, Compliment of B, AB/A) at up to 300 kHz. It accepts a 12 V DC supply (limits 12–13 V) and presents a 1 kOhm input impedance to the encoder line. The card supports cable runs up to 500 m and includes overload and short-circuit protection on the output side.
Schneider Electric lists the VW3A3E405 as obsolete.
Integration Notes
Terminal connections accept 0.2 mm² to 1.5 mm² (AWG 24 to AWG 15). The card draws 175 mA from the 12 V DC supply. The 300 kHz maximum operating frequency covers most standard incremental encoders used in Altivar drive feedback applications. The push-pull output stage eliminates the need for a pull-up resistor on the receiving PLC or drive input.
