{"product_id":"allen-bradley-1769-l33erms-compact-guardlogix-cpu-controller","title":"Allen Bradley 1769-L33ERMS Compact GuardLogix CPU Controller","description":"\u003ch2\u003eAllen Bradley 1769-L33ERMS Compact GuardLogix Safety Controller\u003c\/h2\u003e\n\u003cp\u003eConfigured for integrated safety loop execution and multi-axis synchronized drive coordination, the \u003cstrong\u003eAllen Bradley 1769-L33ERMS\u003c\/strong\u003e (\u003cstrong\u003e1769-L33ERMS\u003c\/strong\u003e Compact GuardLogix Controller) provides direct physical\/electrical execution. The hardware platform establishes concurrent execution of standard automation tasks alongside functional safety programming routines, utilizing embedded Ethernet processing nodes to direct physical field actuators and read emergency stop circuits across a single industrial network backbone.\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\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1769-L33ERMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllen Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.57 kg (1.25 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCompactLogix 5370 L3 Chassis Footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.5 W nominal power dissipation (11.5 W maximum)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication Memory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSafety Memory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNon-volatile Storage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 GB via 1784-SD1 card (expandable to 2 GB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLocal Expansion Modules\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 16 Bulletin 1769 I\/O modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEtherNet\/IP Nodes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 nodes (Note: up-rev firmware variants support up to 40 nodes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntegrated Motion Support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 8 CIP motion axes (Up to 16 axes under alternative firmware profiles)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current Draw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e560 mA at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Ports\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 EtherNet\/IP ports, 1 Type B 2.0 USB Client port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEthernet Communication Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 Mbps \/ 100 Mbps auto-negotiation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 V continuous, basic insulation type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVibration Tolerance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 to 500 Hz, 5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShock Tolerance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 g (DIN rail mount), 30 g (panel mount)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFirmware Validation and Safety Network Constraints\u003c\/h3\u003e\n\u003cp\u003eThe 1769-L33ERMS enforces strict deterministic execution parameters by verifying firmware flash compatibility before allowing safety task configuration to proceed. Field engineers allocate standard and safety routines across 32 individual controller tasks, supporting up to 1000 programs per task to isolate risk-reduction logic from material handling processes. The dual network ports communicate via Profinet \/ EtherNet\/IP deterministic networks, maintaining active Device Level Ring (DLR) validation loops to avoid connection loss if an ethernet drop cable experiences mechanical failure. To maintain signal integrity across high-density configurations, the architecture restricts physical I\/O density scaling to 16 local modules, preventing voltage drop off across the system backplane channels.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the 1769-L33ERMS distribute and protect safety-critical programming separate from standard logic?\u003c\/p\u003e\n\u003cp\u003eA: The physical memory structure divides processing into a 2 MB standard sector and a 1 MB safety sector. The safety memory runs under an internal safety lock mechanism that requires a distinct electronic signature, preventing standard user code errors from modifying safety routines.\u003c\/p\u003e\n\u003cp\u003eQ: What are the installation restrictions concerning power supply positioning for a 16-module expansion layout?\u003c\/p\u003e\n\u003cp\u003eA: The 1769-L33ERMS depends on 1769-PA2, 1769-PA4, or 1769-PB4 bank power supplies. Operators must verify that no expansion module sits beyond the specified power supply distance rating of 4 modules from its source supply to guarantee proper voltage regulation on the 5 VDC backplane rail.\u003c\/p\u003e\n\u003cp\u003eQ: Can the dual network ports on this processor be split into two separate IP address subnets?\u003c\/p\u003e\n\u003cp\u003eA: No. The integrated dual Ethernet ports share a single internal network interface card and function strictly as a two-port embedded switch. They must share the same IP address configuration, primarily for linear or Device Level Ring (DLR) wiring architectures.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Grounding Track:\u003c\/strong\u003e Ground the DIN rail assembly before mounting the hardware, linking the structural rail to the enclosure subpanel grounding block using 10 AWG copper wire.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctional Safety Ground Continuity:\u003c\/strong\u003e Connect the shield drain wires of all safety-critical analog input loops directly to an isolated copper busbar inside the enclosure, keeping unshielded conductor leads below 25 mm (1 inch).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Block Wiring Configuration:\u003c\/strong\u003e Wire all field IO modules connected to the processor using copper conductors with a minimum temperature rating of 90 deg C, keeping sizes strictly within 22-14 AWG for solid wires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Mechanical Interlocking:\u003c\/strong\u003e Verify that the expansion bus connectors lock together fully by pushing the integrated locking switches forward before completing panel fastening bolts or closing field circuits.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":44414874681443,"sku":"1769-L33ERMS","price":310.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/196._63c85390-7db6-4acf-b1c6-8cb8612a2ce4.jpg?v=1785228867","url":"https:\/\/www.autocontrolglobal.com\/products\/allen-bradley-1769-l33erms-compact-guardlogix-cpu-controller","provider":"AutoControl Global","version":"1.0","type":"link"}