{"product_id":"relay-output-module-allen-bradley-1771-ow-plc-5","title":"Relay Output Module | Allen-Bradley 1771-OW PLC-5","description":"\u003cp\u003eThe \u003cstrong\u003e1771-OW\u003c\/strong\u003e is an 8-channel selectable relay output module designed for integration into Allen-Bradley 1771 I\/O chassis driven by PLC-5 control systems. Arranged into four isolated groups of two channels each with individual commons, it provides versatile contact switching for resistive loads across 24 to 138 VAC RMS and 24 to 125 VDC voltage ranges. Each channel defaults to Normally Open (N.O.) operation but can be individually reconfigured via jumpers to Normally Closed (N.C.) logic to align with specific field control requirements.\u003c\/p\u003e\n\u003ch3\u003eIsolated Contact Control and Switching Performance\u003c\/h3\u003e\n\u003cp\u003eThe 1771-OW provides optical and electrical isolation between backplane logic circuitry and field-side contacts, enabling all eight output relays to operate simultaneously under distinct load conditions. Optimized primarily for resistive loads, each contact supports a switching frequency up to 10 Hz with an operate\/release time of 5 ms and a 1 ms bounce time. Off-state signal delay reaches 45 ms (±15 ms) on AC circuits and 50 ms on DC circuits.\u003c\/p\u003e\n\u003ch3\u003eElectrical Constraints and Backplane Powering\u003c\/h3\u003e\n\u003cp\u003eOperating directly from the backplane supply, the 1771-OW draws up to 700 mA at 5 VDC to energize internal relay coils. Continuous contact currents are rated up to 1.0 A per channel, with specific rating thresholds of 1.0 A at 30 VAC\/VDC (30 W) and 0.25 A at 120 VAC\/VDC. A minimum contact load of 10 mA at 24 V (AC or DC) is required to ensure reliable switching. Total module power dissipation ranges between 3.3 and 3.7 W, generating 11.3 to 12.7 BTU\/hr of thermal dissipation.\u003c\/p\u003e\n\u003ch3\u003eChassis Installation and Field Wiring\u003c\/h3\u003e\n\u003cp\u003eThe module mounts into any standard slot of a 1771 I\/O chassis except the leftmost processor\/adapter slot. Physical slot keying uses plastic bands inserted between pins 6 and 8, and pins 16 and 18. Field wiring connects via a \u003cstrong\u003e1771-WD\u003c\/strong\u003e field wiring arm, supporting stranded conductors up to 14 AWG (maximum insulation thickness 3\/64 in) with terminal screw torque specified at 7 to 9 in-lb. Signal wiring runs should not exceed 1,000 ft (304.8 m).\u003c\/p\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\u003e1771-OW\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSelectable Relay Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003ePLC-5 Systems (1771 I\/O Chassis)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e8 outputs (4 isolated groups of 2 channels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Form\u003c\/td\u003e\n\u003ctd\u003eSelectable Normally Open (N.O.) \/ Normally Closed (N.C.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDefault Contact Configuration\u003c\/td\u003e\n\u003ctd\u003eNormally Open (N.O.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Operating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e24–138 VAC RMS (resistive loads)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Operating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e24–125 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Rating per Channel\u003c\/td\u003e\n\u003ctd\u003e1.0 A max continuous (0.25 A @ 120 VAC\/DC; 1.0 A @ 30 VAC\/DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Contact Load\u003c\/td\u003e\n\u003ctd\u003e10 mA @ 24 V (AC or DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current Draw\u003c\/td\u003e\n\u003ctd\u003e700 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e3.3–3.7 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e11.3–12.7 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003e10 Hz max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperate \/ Release Time\u003c\/td\u003e\n\u003ctd\u003e5 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Bounce Time\u003c\/td\u003e\n\u003ctd\u003e1 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Delay (Off)\u003c\/td\u003e\n\u003ctd\u003eAC: 45 ±15 ms; DC: 50 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Arm Model\u003c\/td\u003e\n\u003ctd\u003e1771-WD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Wiring Wire Gauge\u003c\/td\u003e\n\u003ctd\u003e14 AWG max stranded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Arm Screw Torque\u003c\/td\u003e\n\u003ctd\u003e7–9 in-lb (0.8–1.0 N·m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Interconnect Cable Length\u003c\/td\u003e\n\u003ctd\u003e1,000 ft (304.8 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChassis Slot Keying Position\u003c\/td\u003e\n\u003ctd\u003eBetween pins 6 \u0026amp; 8, and between pins 16 \u0026amp; 18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Relative Humidity\u003c\/td\u003e\n\u003ctd\u003e5–95% (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.44 lbs (1.11 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: How do you change the relay outputs on the 1771-OW between Normally Open and Normally Closed? A: Contact logic for each of the eight output channels is selected using internal jumpers on the module, which come factory set to Normally Open (N.O.) and can be repositioned individually to Normally Closed (N.C.).\u003c\/p\u003e\n\u003cp\u003eQ: Which field wiring arm is required to connect field wiring to the 1771-OW? A: The 1771-OW uses the 1771-WD field wiring arm, which supports up to 14 AWG stranded wire tightened to 7–9 in-lb of screw torque.\u003c\/p\u003e\n\u003cp\u003eQ: What are the current rating limits per output channel on the 1771-OW? A: Each output channel carries a maximum continuous current of 1.0 A at 30 VAC\/VDC (30 W max) and 0.25 A when operating at 120 VAC\/VDC.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53149249503512,"sku":"1771-OW","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1771-OVN2_Cocoai_45141a39-deca-4af8-bc3f-d2b6bd15b87f.jpg?v=1793845896","url":"https:\/\/www.innoplcsync.com\/products\/relay-output-module-allen-bradley-1771-ow-plc-5","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}