{"product_id":"allen-bradley-1746-ow16-l-relay-output-module","title":"Allen-Bradley 1746-OW16 l Relay Output Module","description":"\u003cp\u003eConfigured for discrete AC\/DC load switching in SLC 500 chassis environments, the \u003cstrong\u003eAllen-Bradley 1746-OW16\u003c\/strong\u003e (\u003cstrong\u003e1746-OW16\u003c\/strong\u003e Digital Output Module) provides direct physical\/electrical execution. It handles 16 electro-mechanical normally open (N.O.) relay output channels partitioned across two isolated commons. The module routes control signals directly from the SLC 500 backplane logic to solenoids, contactors, indicators, and motor starters without requiring interposing relays.\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\u003e1746-OW16\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\u003e1.06 lbs (0.48 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard SLC 500 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\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eMinimum Watts: 5.17 W (0.033 W per point)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e0.170 A at 5 VDC \/ 0.180 A at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Count\u003c\/td\u003e\n\u003ctd\u003e16 Normally Open (N.O.) Relay Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Grouping\u003c\/td\u003e\n\u003ctd\u003e2 isolated groups (8 points per common)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5 to 125 VDC \/ 5 to 265 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Load Current\u003c\/td\u003e\n\u003ctd\u003e10 mA at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous Current Rating\u003c\/td\u003e\n\u003ctd\u003e16.0 A AC total (8.0 A per common group)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Leakage\u003c\/td\u003e\n\u003ctd\u003e0.0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Delay (Resistive Load)\u003c\/td\u003e\n\u003ctd\u003eOn Delay: 10 ms; Off Delay: 10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus \u0026amp; Deterministic Output Control\u003c\/h3\u003e\n\u003cp\u003eThe 1746-OW16 interfaces with the SLC 500 parallel backplane bus, receiving output bit status updates directly from the processor image table during each scan cycle. The module incorporates optical isolation between backplane logic circuitry and field-side contacts, protecting internal processors from switching transients. Discrete output bit states are latched deterministically, maintaining firmware flash compatibility and predictable switching speeds across all SLC 500 rack configurations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the backplane current requirements for the 1746-OW16 relay module?\u003c\/p\u003e\n\u003cp\u003eA: The module draws 0.170 A at 5 VDC and 0.180 A at 24 VDC directly from the SLC 500 rack power supply backplane bus.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 1746-OW16 switch both AC and DC voltages on the same module?\u003c\/p\u003e\n\u003cp\u003eA: Yes, because the 16 outputs are divided into two electrically isolated groups of 8 points each, each group common can operate on a separate AC or DC field voltage source within rated operating limits (5-125 VDC \/ 5-265 VAC).\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Isolation:\u003c\/strong\u003e De-energize system backplane power and external field load power before inserting or removing the module from the SLC 500 rack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Slot Alignment:\u003c\/strong\u003e Slide the module firmly into the designated SLC 500 chassis slot until the top and bottom retaining clips snap into place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Wiring Terminal Block:\u003c\/strong\u003e Connect field conductors to the 1746 removable terminal block (RTB). Ensure the 8-point groups are wired to their respective common terminals (VAC\/VDC COM 0 and COM 1).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Limiting Protection:\u003c\/strong\u003e Install external fast-acting fuses for each group common to protect relay contacts from overcurrent and short-circuit damage (maximum 8.0 A per common).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInductive Load Suppression:\u003c\/strong\u003e Install external surge suppressors (movs or flyback diodes) across inductive field loads to prevent contact arcing and electro-magnetic interference.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52734366810392,"sku":"1746-OW16","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1746-OW16_Cocoai.jpg?v=1789870778","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1746-ow16-l-relay-output-module","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}