FestoVTUG Valve Terminal Assembly with 25-Pin Sub-D Multi-Pin Electrical Interface, 24 V DC

Product Description

What this part is

A Festo pneumatic valve terminal assembly built around the VAEM-L1-S-M1-25 electrical interface, the multi-pin end plate that gathers every valve solenoid on a VTUG valve manifold onto a single 25-pin sub-D (D-sub) connector. Instead of running an individual cable to each valve, one loom lands on the terminal and the interface distributes 24 V DC switching signals internally. 2-242-95-0020 is the OEM assembly number the unit was supplied under. VAEM-L1-S-M1-25 is Festo’s designation for the electrical interface, Festo part number 573445. The interface module carries no air; the pneumatic content of this listing is the VTUG terminal it is mounted on.

Decoding the order code

VAEM: Festo electrical interface for valve terminals. L1: interface generation and form for the VTUG valve terminal family. S: sub-D style connection. M1: multi-pin (parallel wiring) rather than fieldbus. 25: 25 pins, giving up to 24 addressable solenoid outputs plus common. The M1-25 variant is also catalogued as V20. 2-242-95-0020: the OEM or machine-builder assembly number this unit was catalogued under.

What these specs mean in practice

Multi-pin is parallel wiring rather than a network. Every solenoid is one PLC output, so there is no bus configuration, no node address and no gateway firmware to match, which is why machine builders still specify it and why it is straightforward to retrofit. The trade-off is cable count at the cabinet end: a 25-pin loom has to be made off or bought.

Valve solenoids on this platform run on 24 V DC. The sub-D interface does not accept mains voltage.

A multi-pin interface is specific to its valve terminal family. It does not adapt a VTUG terminal to a fieldbus, and it does not fit the older VTUB or CPV platforms.

Published specifications

Type: pneumatic valve terminal assembly with multi-pin electrical interface. Electrical interface: VAEM-L1-S-M1-25 (Festo 573445). Connector: 25-pin sub-D, multi-pin / parallel wiring. Valve supply voltage: 24 V DC. Platform: Festo VTUG valve terminal. OEM assembly number: 2-242-95-0020. Origin: Germany.

Quantity and configuration

One assembly, new old stock, supplied with the additional parts visible in the listing photographs. Mating 25-pin sub-D cable or loom is not included.

Mounting data

On a multi-pin terminal the physical valve order and the pin order are set by how the terminal was originally built rather than by a standard. VTUG valve positions are populated to the original machine’s requirement, with blanking plates in the unused positions.

Interchange guidance

Festo 573445 is the interface on its own. VAEM-L1-S-…-AP variants are the same interface family with a different connection form, related parts rather than substitutes. A VTUG terminal built for fieldbus (CPX / CTEU) uses a different end plate entirely and cannot take a multi-pin interface without changing the terminal.