Description
LAM 853-150806-001
Technical Specifications Isolated digital output drivers for solenoid valves; digital input channels for valve position feedback; short-circuit and overcurrent protection per channel; equipment backplane communication interface; 24V DC supply from the semiconductor tool power system.
Functional Features Converts controller logic commands into electrical drive signals for pneumatic solenoid valves. Reads position confirmation feedback from valve and cylinder sensors. Each output channel includes independent current limiting protection. Fault information including short circuit and open load is sent to the equipment diagnostic log. Supports the timed sequence actions required for wafer handling and chamber cycling.
Application Scenarios LAM semiconductor etch tools, used to control pneumatic actuators and wafer transfer mechanisms in chip fabrication cleanrooms.
Performance Parameters Fast solenoid drive response; reliable feedback signal acquisition; channel protection activates immediately upon overload; stable operation under cyclic cleanroom process sequences.
Material Composition PCB is low-particle FR-4 laminate; driver ICs and opto-isolators are industrial grade; connectors are gold-plated; mechanical mounting hardware is corrosion-resistant alloy.
Structural Characteristics Rack-mounted plug-in circuit board; rear edge gold fingers connect to the equipment backplane; front panel has LED indicators showing valve drive and feedback status; multiple pin connectors route power and control signals to the pneumatic manifold.
Working Principle The equipment host sends valve actuation commands over the backplane bus. The board’s isolated driver circuits energize the corresponding solenoid coils. Position feedback from cylinder sensors is sampled by input circuits and returned to the controller to confirm mechanical movement completion. If an output channel exceeds current limits, local protection shuts down the channel and triggers a fault message.
Installation Requirements Lock out all equipment power before installation and apply anti-static controls. Insert the board into the designated rack slot and secure mounting hardware. Confirm solenoid and feedback wiring matches the tool wiring diagram. Perform functional valve sequence tests after power-up.
Precautions for Use Only use inside the specified LAM wafer processing machine. Keep the board surface free of photoresist, plasma byproducts and particulate contamination. Do not substitute with non-original circuit boards.
