{"product_id":"allen-bradley-1785-l30b-standard-processor-module","title":"Allen-Bradley 1785-L30B Standard Processor Module","description":"\u003cp\u003eConfigured for central logic processing and multi-channel communication execution in 1771 Universal I\/O chassis networks, the \u003cstrong\u003eAllen-Bradley 1785-L30B\u003c\/strong\u003e (\u003cstrong\u003e1785-L30B\u003c\/strong\u003e PLC-5\/30 Standard Processor Module) provides direct physical execution of discrete and analog control algorithms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1785-L30B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.73 lbs (1.24 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 1771 Single-Slot Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C (32 to 140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNon-Operating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C (-40 to 185 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e12 W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC (Backplane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current Draw\u003c\/td\u003e\n\u003ctd\u003e2.3 A @ 5 VDC max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum I\/O Capacity\u003c\/td\u003e\n\u003ctd\u003e1024 Max Total I\/O (1024 Analog I\/O)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e32k Words SRAM (Battery-Backed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackup Memory Option\u003c\/td\u003e\n\u003ctd\u003eEEPROM (via 1785-ME16, -ME32, -ME64, -M100)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntegrated Communication Ports\u003c\/td\u003e\n\u003ctd\u003e2 DH+\/Remote I\/O (Scanner\/Adapter), 1 Serial RS-232\/422A\/423A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Module\u003c\/td\u003e\n\u003ctd\u003e1770-XYC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e1771 Universal I\/O Chassis Slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Backplane Bus \u0026amp; Communication Architecture\u003c\/h3\u003e\n\u003cp\u003eThe 1785-L30B module mounts directly into the primary slot of a 1771 Universal I\/O chassis, interfacing through the backplane bus to execute real-time I\/O updates across up to 1024 digital and analog points. Its dual integrated Data Highway Plus (DH+) and Remote I\/O (RIO) channels operate deterministically to support peer-to-peer data exchange and distributed rack monitoring. Onboard battery-backed 32k word SRAM stores application ladder logic and configuration tables, maintaining program state across power cycles through dedicated memory bus lines.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the backplane current draw for the 1785-L30B processor?\u003c\/p\u003e\n\u003cp\u003eA: The 1785-L30B processor draws 2.3 A at 5 VDC from the 1771 chassis power supply backplane, consuming up to 12 W of total system power dissipation.\u003c\/p\u003e\n\u003cp\u003eQ: How is memory retained during complete chassis power interruptions?\u003c\/p\u003e\n\u003cp\u003eA: Active system programs and registers in the 32k word SRAM are sustained by an onboard 1770-XYC lithium battery assembly. Optional non-volatile EEPROM modules can also be installed for permanent program preservation.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Isolation\u003c\/strong\u003e: Disconnect main power from the 1771 chassis power supply prior to inserting or removing the 1785-L30B module to avoid backplane pin arcing or electrical damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Placement\u003c\/strong\u003e: Align the circuit board with the top and bottom card guides in Slot 0 of the 1771 I\/O chassis. Push firmly until the rear connector seats into the backplane, then lock the upper and lower chassis latches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication Wiring\u003c\/strong\u003e: Route DH+, Remote I\/O, and RS-232 serial cables away from AC power conductors and variable frequency drive wiring. Terminate twinaxial shield wires strictly at a single chassis ground connection point to prevent ground loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Installation\u003c\/strong\u003e: Verify the 1770-XYC lithium battery harness is properly connected to the processor before placing the system into operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeyswitch Configuration\u003c\/strong\u003e: Set the front panel key switch to PROG for initial program downloading via serial or DH+ ports, then switch to RUN or REM for live execution.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48770297364670,"sku":"1785-L30B","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/1785-LT2.png?v=1787296749","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1785-l30b-standard-processor-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}