{"product_id":"1756-ih16isoe-allen-bradley-digital-isolated-input-module-controllogix","title":"1756-IH16ISOE Allen-Bradley Digital Isolated Input Module ControlLogix","description":"\u003cp\u003eConfigured for high-speed event monitoring and signal isolation in ControlLogix platforms, the \u003cstrong\u003eAllen-Bradley 1756-IH16ISOE\u003c\/strong\u003e (\u003cstrong\u003e1756-IH16ISOE\u003c\/strong\u003e Digital Isolated Input Module Series of Events) provides direct physical\/electrical execution. It interfaces 125 VDC discrete field devices to the system backplane, enabling precise time-stamping of input state changes for diagnostic analysis.\u003c\/p\u003e\n\u003ch3\u003eCatalog Designation \u0026amp; Feature Breakdown\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1756\u003c\/strong\u003e: ControlLogix chassis-based I\/O system platform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIH\u003c\/strong\u003e: Digital isolated input module rating operating at 125 VDC nominal voltage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16\u003c\/strong\u003e: 16 individually isolated input channels preventing ground loops between circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISOE\u003c\/strong\u003e: Sequence of Events functionality providing sub-millisecond timestamp resolution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSystem Parameters \u0026amp; Electrical Performance\u003c\/h3\u003e\n\u003cfigure\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\u003e1756-IH16ISOE\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\u003e0.35 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e23.3 x 18.3 x 5.3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5.5 W at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003e16 individually isolated, SOE capable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e125 VDC sink-source\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e90-140 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Current (Max)\u003c\/td\u003e\n\u003ctd\u003e0.3 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5V)\u003c\/td\u003e\n\u003ctd\u003e275 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24V)\u003c\/td\u003e\n\u003ctd\u003e2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay Time\u003c\/td\u003e\n\u003ctd\u003e75 us plus selected filter time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8537101190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlace of Shipment\u003c\/td\u003e\n\u003ctd\u003eXiamen, China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Integration \u0026amp; Deterministic Communication\u003c\/h3\u003e\n\u003cp\u003eThe module utilizes high-speed backplane bus communication velocity to transmit timestamped channel events directly to the controller. Ethernet\/IP deterministic networks synchronize the internal clock across distributed chassis, maintaining SOE timestamp integrity across complex control architectures. Channel-to-channel galvanic isolation prevents cross-circuit interference while maintaining I\/O density scaling inside the standard ControlLogix form factor. Firmware flash compatibility ensures seamless integration with Studio 5000 Logix Designer environments.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1756-IH16ISOE module sealed in anti-static packaging\u003c\/li\u003e\n\u003cli\u003e1 x Factory documentation insert with installation wiring diagrams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePhysical Mount \u0026amp; Cabinet Wiring Rules\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKey the Removable Terminal Block (RTB) or Wiring Arm prior to insertion to prevent improper backplane alignment.\u003c\/li\u003e\n\u003cli\u003eMaintain minimum 50 mm clearance around chassis enclosure vents for proper convection airflow.\u003c\/li\u003e\n\u003cli\u003eRoute high-voltage DC field signal lines away from low-voltage communication cabling inside panel wireways.\u003c\/li\u003e\n\u003cli\u003eEnsure ground drain wires connect to the central enclosure ground bus using short, low-impedance leads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Technical FAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the time-stamping resolution for Sequence of Events logging?\u003c\/p\u003e\n\u003cp\u003eThe module records input state transitions with sub-millisecond accuracy, referencing the local chassis clock synchronized across the control backplane.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes each input channel require an independent power source?\u003c\/p\u003e\n\u003cp\u003eChannels are individually isolated, allowing connection to distinct 125 VDC control circuits or a shared power supply without common ground ties.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens if a field signal falls into the off-state voltage range?\u003c\/p\u003e\n\u003cp\u003eThe channel drops to an off-state when current falls below 0.3 mA, ensuring noise immunity against stray induced voltages on field wiring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan this module be inserted into a backplane while under power?\u003c\/p\u003e\n\u003cp\u003eYes, RIUP (Removal and Insertion Under Power) is supported, though field signal power should be disconnected from the RTB during maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow much current does the unit draw from the 5 VDC backplane bus?\u003c\/p\u003e\n\u003cp\u003eThe logic board consumes 275 mA at 5 VDC from the backplane, which must be factored into total chassis power supply sizing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the purpose of selecting input filter times during configuration?\u003c\/p\u003e\n\u003cp\u003eFiltering suppresses mechanical contact bounce and electrical noise, preventing false trigger registrations in the SOE event log.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does channel isolation protect the main controller platform?\u003c\/p\u003e\n\u003cp\u003eOptical isolation barriers rating up to continuous field voltages prevent high-voltage surges from penetrating the chassis backplane logic circuitry.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat Removable Terminal Block (RTB) assemblies are compatible?\u003c\/p\u003e\n\u003cp\u003eIt interfaces with 36-pin RTBs such as the 1756-TBCH or 1756-TBS6H, which must be ordered separately based on terminal screw preference.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066415272109,"sku":"1756-IH16ISOE","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1756-ih16isoe_1_-3.jpg?v=1787191361","url":"https:\/\/www.maxwellplc.com\/ga\/products\/1756-ih16isoe-allen-bradley-digital-isolated-input-module-controllogix","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}