Zeiss 348224 VAC Control Board Modules

Technical Dossier

Product Details And Specifications

Zeiss 348224 VAC Control Board Series: Comprehensive Module Range and Technical Overview

The Zeiss 348224 VAC Control Board series is a family of precision vacuum and motion control electronics developed by Carl Zeiss AG for integration into coordinate measuring machines (CMMs), semiconductor lithography systems, and high-precision optical inspection platforms. These boards are deployed across global heavy-industry and high-technology sectors including semiconductor fabrication plants, aerospace metrology labs, automotive manufacturing QC lines, and nuclear-grade dimensional inspection facilities. The 348224 series governs vacuum actuation, axis servo feedback, and pneumatic valve sequencing within Zeiss CMM cabinets, making it a critical sub-assembly for machine uptime. Installed base spans multiple decades of Zeiss CONTURA, PRISMO, ACCURA, and ECLIPSE platform generations, with units still in active service in chemical processing plants and precision engineering facilities worldwide.

The Evolution of 348224 VAC Control Board Architecture

The 348224 board architecture originated in the late 1980s as Zeiss transitioned its CMM platforms from relay-based pneumatic control to fully integrated PCB-driven vacuum management. Early revisions (sub-series -1101 through -1201) used discrete TTL logic for valve sequencing and analog PID loops for pressure regulation. By the mid-1990s, the -1300 sub-series introduced surface-mount components, EEPROM-based parameter storage, and CAN-bus compatibility for integration with Zeiss CALYPSO measurement software environments. The -1302 revision (this listing) represents the mature production variant of the -1300 architecture, incorporating improved EMI shielding, revised power regulation stages, and updated MOSFET drivers for solenoid valve control. Compatibility issues arise when mixing -1101/-1201 boards with -1300-series backplanes due to differing bus voltage levels (5 V TTL vs. 3.3 V CMOS signaling). Replacement of -1101 boards in legacy CONTURA R cabinets requires firmware re-parameterization via Zeiss service software. The -1302 is the last actively manufactured revision; all subsequent Zeiss platforms migrated to integrated motion controller architectures that absorb VAC control functions into the main axis controller board.

348224 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced components within the Zeiss 348224 VAC Control Board family and associated vacuum/pneumatic control sub-assemblies. All models are classified by functional role within the Zeiss CMM cabinet architecture.

VAC Control Board — Primary Revisions

• 348224-9113-1101: Early-generation VAC board; TTL logic, relay-assisted valve drive, CONTURA R/S compatible.
• 348224-9113-1201: Revised analog PID stage; improved pressure sensor interface; PRISMO legacy fit.
• 348224-9113-1301: First SMD revision; EEPROM parameter storage; CAN-bus interface introduced.
• 348224-9113-1302: Current production VAC control board; MOSFET valve drivers; enhanced EMI shielding; ACCURA/CONTURA GT compatible.
• 348224-9113-1303: Field-modified variant; updated power supply section; drop-in replacement for -1302 in select ECLIPSE configurations.

Pneumatic Valve Driver Modules

• 348224-9114-0101: 8-channel solenoid valve driver board; 24 VDC output; interfaces with -1302 VAC board via ribbon connector.
• 348224-9114-0102: 16-channel extended valve driver; used in dual-axis pneumatic configurations on PRISMO Ultra platforms.
• 348224-9114-0201: High-current valve driver module; supports proportional valves; ACCURA CMM specific.

Pressure Sensor & Feedback Interface Boards

• 348224-9115-0101: Analog pressure transducer interface; 0–10 V signal conditioning; mounts to VAC board J3 connector.
• 348224-9115-0102: Differential pressure sensor board; used in dual-chamber vacuum systems on ECLIPSE series.
• 348224-9115-0201: Digital pressure feedback module; I²C bus output; compatible with -1301 and -1302 VAC boards only.

Power Supply & Regulation Sub-Assemblies

• 348224-9116-0101: +5 V / +12 V / +24 V regulated PSU board; primary power source for VAC control cabinet section.
• 348224-9116-0102: Redundant power module; hot-swap capable; used in high-availability CMM installations.
• 348224-9116-0201: DC-DC converter module; 48 V input to 24 V output; for facilities with non-standard cabinet power feeds.

Communication & Interface Adapters

• 348224-9117-0101: RS-232 / CAN-bus bridge adapter; enables legacy -1201 boards to communicate with CALYPSO 5.x and later software.
• 348224-9117-0201: USB diagnostic interface board; used by Zeiss field service for VAC board parameter read/write and fault logging.

Sourcing Hard-to-Find & Obsolete 348224 Parts

Quality Control for the 348224 Range

Each 348224 VAC Control Board processed by DriveKNMS undergoes a structured multi-stage inspection protocol before dispatch. Visual inspection covers PCB trace integrity, solder joint condition, capacitor ESR, and connector pin alignment. Functional testing replicates the Zeiss cabinet backplane environment: boards are powered at rated voltage (5 V / 12 V / 24 V rails) and exercised through full valve sequencing cycles using a proprietary test fixture that emulates the CALYPSO software command set. CAN-bus communication integrity is verified at 250 kbit/s and 500 kbit/s baud rates. EEPROM parameter blocks are read and validated against known-good reference images for the applicable sub-revision. MOSFET valve driver channels are load-tested at 80% of rated current for thermal stability verification. Boards exhibiting marginal performance on any channel are rejected and not offered for sale. All passed units are issued a DriveKNMS test certificate with date stamp, technician ID, and test result log, supplied with each shipment.