Siemens Vickers 3-542-1280A Circuit Servo Board

Siemens Vickers 3-542-1280A Circuit Board is an interface card used in legacy Vickers servo drive configurations, connecting a Vickers SAI A2100E servo amplifier to the 611 Power Module. This plug‑in circuit board resides in the drive rack and handles interconnection between the servo amplifier and the power stage, enabling the drive to receive commands and operate the motor through the 611 power module. The part is commonly catalogued as 3-542-1280A (also referenced as 35421280A) and is described by suppliers as a Vickers SAI A2100E to 611 Power Module Interface Card. Vendors such as Lektronix list 3-542-1280A specifically as a Vickers interface card for the A2100E to 611 hardware, and some listings show it as compatible with Siemens/Vickers drive suites. Availability is typically as refurbished or repair items through specialized distributors that serve vintage Siemens/Vickers equipment. Because compatibility depends on the exact backplane and wiring scheme used in a given drive, verify that the SAI A2100E backplane and the 611 Power Module interface on your system align with the 3-542-1280A before attempting replacement.