The Schneider Electric VW3AE2005 is an obsolete Pt100 relay accessory designed for the Altivar 61 Plus, Altivar 61 Plus-LH, Altivar 71 Plus-LH, and Altivar 71 Plus floor-standing drives with separate air flows or compact versions. Its job is to read Pt100 sensors embedded in the line supply transformer and relay that temperature signal back to the drive's control logic — critical for preventing transformer overtemperature in high-duty-cycle applications.
Obsolete per the manufacturer's lifecycle record.
The Pt100 input expects a standard 100 Ω platinum RTD at 0 °C; the relay output trips when the winding temperature exceeds the setpoint, typically wired into a drive digital input or safety chain. In an Altivar 61/71 Plus cabinet, this relay mounts in the accessory slot of the floor-standing enclosure, not on the main power bus.
Deployment Context
Designed for Altivar floor-standing drives with separate air flows or compact versions — typically found in pump, fan, and compressor stations where the line transformer is remote from the drive. The relay sits in the control compartment, wired via shielded cable to the transformer's Pt100 sensor. No DIN-rail mounting; it plugs into a dedicated slot in the drive enclosure.