Product Description for B&R 7AT352.70 Analog Input Submodule

7AT352.70 is a screw-in analog input submodule designed exclusively for the B&R System 2003 automation control platform. It is installed into the slots of the 7AF104.7 high-speed analog adapter base, capturing standard analog process signals from field transmitters and converting analog physical values into digital data for System 2003 PCC host CPUs via the platform’s proprietary internal backplane bus. Manufactured in Austria, the module complies with CE and UL/cULus international industrial safety standards for global factory deployment. The entire System 2003 hardware product line has been officially end-of-life by B&R headquarters. Available inventory includes original factory-sealed new imported modules and fully function-verified refurbished units, dedicated to legacy production line maintenance, equipment retrofits and emergency spare part replacement projects. Built-in EMI filtering circuits and multi-layer surge protection ensure steady, precise analog signal acquisition in electrical cabinets with heavy electromagnetic interference generated by inverters, servo drives and contactors.

The official full part number is 7AT352.70, classified as single-channel universal analog input screw-type submodule matching the four-slot 7AF104.7 adapter base framework of System 2003. The module is delivered as an independent bare assembly without pre-installed terminal blocks, signal cables or auxiliary mounting hardware. Separate 12-pin terminal blocks serve as mandatory wiring accessories, offering two styles for field assembly: screw-clamp type 7TB712.9 and cage-clamp type 7TB712.91. Permanent laser engraving on the rear plastic housing displays the B&R brand logo, complete part number, hardware revision code, unique serial number and production batch code to enable full production traceability and genuine product authentication. Operating power is supplied by the System 2003 24 V DC backplane bus through the connected 7AF104.7 adapter base, featuring low continuous power consumption suitable for 24-hour non-stop round-the-clock workshop operation. Its slim compact form factor occupies exactly one single slot position of the four-slot 7AF104.7 adapter base, supporting dense, space-saving rack stacking layouts. For cross-border logistics and customs clearance declaration, it falls under the tariff classification of industrial PLC analog signal acquisition sub-components. Compact LED indicator lights on the front panel deliver real-time visual feedback for module power supply status, backplane communication connection quality and channel fault alarm signals to accelerate on-site troubleshooting procedures.

The core function of this analog input submodule is high-stability collection of standard industrial analog feedback signals for process monitoring and closed-loop control systems. The input channel receives voltage and loop current signals output by pressure transmitters, flow meters, displacement transducers and temperature transmitters, translating continuous analog physical quantities into high-resolution digital data readable by System 2003 control programs. Internal high-frequency filter circuitry suppresses high-frequency cabinet electromagnetic noise, effectively eliminating measurement drift, jitter and unstable sampling readings during thermal, pressure and flow closed-loop regulation cycles. Converted digital measurement data is synchronously uploaded to the host CPU to realize multiple control and monitoring functions, including closed-loop process adjustment, over-limit fault interlock protection, real-time value display on compatible 7AI261 series color touch HMIs, and long-term production operation data logging. Multiple 7AF104.7 adapter bases can be mounted side by side on a single System 2003 backplane, and each four-slot base can accommodate up to four 7AT352.70 analog input modules to flexibly expand total measurement channel capacity according to system design schemes. Vacant rack bus expansion slots without fitted adapter bases are sealed with 7AC020.9 bus covers to preserve cabinet dustproof performance and strengthen overall rack structural rigidity. All operational configuration parameters such as input signal range selection, signal scaling coefficients, filter response intensity and fault threshold limits are set, adjusted and downloaded uniformly via B&R Automation Studio software connected to the System 2003 CPU; no manual hardware trimming or calibration adjustments need to be performed directly on the module body.

This analog input submodule is equipped with one fully differential analog input channel supporting two mainstream selectable industrial signal ranges: ±10 V DC voltage and 0–20 mA DC loop current. The integrated analog-to-digital conversion circuit adopts low-temperature-drift precision components to guarantee consistent measurement accuracy and linearity under fluctuating ambient temperature conditions. Comprehensive multi-layer protective circuits are embedded to protect the module from damage risks caused by overvoltage, overcurrent, reverse polarity wiring and input short-circuit faults triggered by field installation misoperations or damaged sensor cables. The outer protective housing is injection molded from flame-retardant reinforced industrial plastic material with an IP20 ingress protection rating, which restricts installation scenarios exclusively to sealed indoor electrical control cabinets and prohibits direct exposure to open-air environments. The continuous stable operating ambient temperature range for both electrical and mechanical performance is 0 °C to +60 °C; the allowable temperature range for warehouse storage and international cross-border transportation extends broadly from -25 °C up to +70 °C. Gold-plated rear insertion contact pins provide low-resistance, anti-corrosion and vibration-resistant electrical contact with the corresponding slots of the 7AF104.7 adapter base, maintaining reliable signal transmission performance during years of uninterrupted factory operation under mechanical vibration generated by processing machinery. There is no independent local firmware storage chip integrated on the module circuit board; all input operation logic and parameter configuration information are remotely managed and distributed by the System 2003 host CPU through high-speed internal backplane bus communication. Matched terminal blocks support standard cross-section copper signal cables for firm, repeatable wiring connection without requiring extra on-site soldering processes.

7AT352.70 analog input submodule is exclusively locked into the B&R System 2003 hardware ecosystem, and cannot achieve normal mechanical assembly or electrical communication interoperation with signal submodules belonging to X20, X67, APC, ACOPOS and other newer generation B&R product platforms. It is specially engineered for tool-free plug-in installation into the four standard slot openings of the 7AF104.7 high-speed analog adapter base as a dedicated single-channel analog input subcomponent. It operates compatibly and stably with the full lineup of standard System 2003 supporting hardware, covering 7CP series PCC CPU controllers, various matched signal submodules including 7AI294.7 potentiometer input modules, 7AI351.70 universal analog input modules, 7AI774.70 RTD temperature input modules, 7AM351.7 mixed analog I/O modules, 7AO352.70 analog output submodules, digital input/output modules, 7AC911.9 CAN bus communication connectors, 7AC020.9 blank bus slot covers and 7AI261 series color touch HMI panels for real-time parameter visualization. No additional mounting brackets, external power transformers or standalone signal isolation amplifiers are necessary for standard assembly and commissioning workflows; the direct snap-in plug structure greatly shortens field installation labor hours. Shielded twisted-pair signal cables are highly recommended for sensor wiring to further attenuate electromagnetic interference in heavy-noise workshop environments. Mandatory matched wiring accessories must be purchased separately, which are 7TB712.9 screw-clamp terminal blocks or 7TB712.91 cage-clamp terminal blocks for reliable electrical connection between the module and field analog sensors. When distributed multi-station CAN bus networking layout is required for long-distance production line deployment, 7AC911.9 CAN bus connectors are installed at communication module reserved positions on the shared rack backplane.

This analog input acquisition submodule is only deployed in automation control stations built based on the B&R System 2003 PCC control architecture. Primary discrete manufacturing machinery application scenarios include compact plastic injection molding machines for barrel and mold temperature monitoring, small packaging and filling production lines for flow and pressure detection, auxiliary textile processing drying oven temperature tracking, bench-top CNC metal cutting machines for coolant pressure and temperature measurement, light-duty printing presses for heating roller thermal monitoring and miniature automated assembly equipment for displacement and pressure feedback collection. It also supports auxiliary process control loops for food and beverage thermal processing machinery, municipal water treatment heating and cooling pump regulation cabinets, light-load material conveyor environmental monitoring systems, and small hydraulic and pneumatic actuator pressure feedback closed-loop regulation systems. Installation application scope is restricted to IP20-rated indoor electrical cabinets inside factory workshops and sheltered semi-outdoor machinery protective housings. The module is not electrically and mechanically rated for direct deployment in environments with corrosive chemical vapors, persistent high humidity, flammable explosive hazardous atmospheres or fully exposed outdoor locations unless equipped with extra fully sealed upgraded protective cabinet enclosures.

Genuine original 7AT352.70 analog input modules are marked with exclusive unique serial numbers recorded and archived in B&R’s official Austrian production database to achieve full component supply chain traceability. As the System 2003 platform has reached official end-of-life status, global product supply channels are limited to authorized international industrial spare part distributors. Refurbished analog input modules undergo rigorous multi-stage pre-delivery performance testing with core focus on acquisition precision: insertion contact continuity inspection, full-range analog input signal accuracy calibration, filter interference suppression performance assessment, backplane bus communication stability trials matched with 7AF104.7 adapter base, and LED fault indicator functional validation. Refurbished qualified units are normally covered by supplier warranty terms ranging from 12 to 24 months. Standard on-site commissioning workflow consists of inserting the module into an empty 7AF104.7 slot, assembling the separate matched terminal block, wiring field analog sensors, and uploading configured measurement parameters through Automation Studio software. Disassembly of internal circuit boards or unauthorized manual hardware calibration adjustments to the analog input circuit are strictly prohibited during installation and routine maintenance work. Long-term storage must be arranged in dry, constant-temperature and low-humidity warehouse environments to prevent plastic casing embrittlement aging and oxidation corrosion of metal contact pins and terminal fastening screws. During equipment maintenance and spare part replacement, field service technicians must fully verify mechanical assembly fit and electrical compatibility with the System 2003 platform and 7AF104.7 adapter base to prevent mismatched assembly with incompatible newer generations of B&R control hardware architectures.