{"product_id":"1734-ob8e-ab-ser-c-point-i-o-digital-source-output-module-genuine-new-1734-ob8e","title":"1734-OB8E Ser C Point I\/O Digital Source Output Module Genuine New 1734OB8E","description":"\u003ch2 id=\"p3\"\u003e1734-OB8E — POINT I\/O 8-Point 24V DC Protected Sourcing Output Module\u003c\/h2\u003e\n\u003cp\u003eThe 1734-OB8E is an 8-point sourcing (PNP) 24V DC transistor output module for the 1734 POINT I\/O system with individual electronic protection and diagnostic reporting per point. The \"E\" denotes protected outputs — each of the eight points has its own short-circuit and overload protection circuit that shuts down only the faulted point and reports a diagnostic bit back to the controller. The other seven outputs continue operating unaffected. At 2A per point, the module handles a wider range of field devices than standard 0.5A POINT I\/O output modules.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1734-OB8E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlatform\u003c\/td\u003e\n\u003ctd\u003ePOINT I\/O (1734)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Points\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eSourcing (PNP) transistor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e24V DC (10–30V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current per Point\u003c\/td\u003e\n\u003ctd\u003e2 A continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectronic Protection\u003c\/td\u003e\n\u003ctd\u003ePer point — short circuit and overload\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFault Reporting\u003c\/td\u003e\n\u003ctd\u003ePer-point diagnostic bits in I\/O data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuto-Reset\u003c\/td\u003e\n\u003ctd\u003eYes — when fault condition clears\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLeakage Current (OFF)\u003c\/td\u003e\n\u003ctd\u003e0.5 mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eON-State Voltage Drop\u003c\/td\u003e\n\u003ctd\u003e0.4V DC max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5V)\u003c\/td\u003e\n\u003ctd\u003e75 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e−20°C to 55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards\u003c\/td\u003e\n\u003ctd\u003eUL 508, CE, IEC 61131-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePer-Point Protection and Diagnostics\u003c\/h3\u003e\n\u003cp\u003eStandard POINT I\/O output modules protect at the group level — a fault on one point shuts down all eight points in the group. Diagnosing which of eight outputs caused the trip requires checking the field wiring manually. The 1734-OB8E changes this: each point has its own protection circuit. A short circuit on Output 3 trips Output 3 only. Outputs 0, 1, 2, 4, 5, 6, and 7 stay on. Simultaneously, the diagnostic bit for Output 3 sets in the controller's I\/O tag data, identifying the specific point.\u003c\/p\u003e\n\u003cp\u003eIn a controller program, the diagnostic bits can be mapped to HMI alarm tags that display the output number and associated device name directly. A maintenance technician gets to the right terminal in the field without a panel walkdown — the HMI tells them exactly which output tripped and which device is wired to it. This reduces fault-to-repair time meaningfully, especially in distributed POINT I\/O nodes where the faulted device may be at a remote location on the machine.\u003c\/p\u003e\n\u003cp\u003eThe auto-reset behavior means the protected output re-energizes automatically once the fault condition clears. If the short circuit is persistent (a pinched cable that remains grounded), the output cycles off until the fault is removed. If the trip was transient — a brief inrush from a solenoid or a momentary wiring issue — the output recovers without operator intervention. For applications where automatic restart after a fault clear is unacceptable, the program logic should monitor the diagnostic bit and hold the output off until an operator acknowledgment clears the fault latch.\u003c\/p\u003e\n\u003ch3\u003e2A per Point — Loads This Module Handles Directly\u003c\/h3\u003e\n\u003cp\u003eAt 2A continuous per point, the 1734-OB8E drives loads that a standard 0.5A POINT I\/O output module can't handle without an interposing relay:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect-acting solenoid valves in the 1\/2-inch and 3\/4-inch size range (typically 0.8–1.5A at 24V DC)\u003c\/li\u003e\n\u003cli\u003e24V coil contactors for motor starters up to approximately 15 kW\u003c\/li\u003e\n\u003cli\u003eIncandescent or resistive heater indicator lamps to 48W at 24V\u003c\/li\u003e\n\u003cli\u003eMultiple LED indicator strings in parallel (30–50 mA each, up to 40+ LEDs per point)\u003c\/li\u003e\n\u003cli\u003e24V DC brake coils for servo motor holding brakes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe combination of 2A capacity and per-point fault protection means high-current loads can connect directly to POINT I\/O outputs without external relays, while preserving the diagnostic visibility that identifies a failed load or wiring fault by point number.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp class=\"faq-q\"\u003e\u003cstrong\u003eQ: What POINT I\/O adapters are compatible?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eAll standard 1734 adapters — EtherNet\/IP (1734-AENT), DeviceNet (1734-ADN), ControlNet (1734-ACN), and others. The output module communicates through the POINT I\/O backplane regardless of the network adapter at the node head.\u003c\/p\u003e\n\u003cp class=\"faq-q\"\u003e\u003cstrong\u003eQ: Does the per-point protection replace the need for external fusing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eNo. The electronic protection protects the module's output transistors — it is not a branch circuit protection device. External fusing or a circuit breaker on the field supply to the terminal base is still required for wiring protection and code compliance.\u003c\/p\u003e\n\u003cp class=\"faq-q\"\u003e\u003cstrong\u003eQ: When a point faults and auto-resets, will it re-energize automatically if the output is still commanded on?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eYes. If the controller program has the output tag set to 1 when the fault clears, the output re-energizes immediately on auto-reset. For safety-critical outputs or any application where automatic restart after a fault is not acceptable, the program should monitor the diagnostic bit and require explicit operator or logic acknowledgment before re-enabling the output.\u003c\/p\u003e\n\u003cp class=\"faq-q\"\u003e\u003cstrong\u003eQ: Can sinking (NPN) field devices be connected to this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eThe 1734-OB8E is a sourcing output — it provides 24V to the load, with the load returning to 0V at the field supply negative. NPN\/PNP refers to sensor output types, not load types. Any 24V DC load that draws current from a positive supply can be connected to a sourcing output correctly. If the question is about connecting NPN sensors as inputs, that requires a POINT I\/O input module — not an output module.\u003c\/p\u003e","brand":"topsdevice","offers":[{"title":"Default Title","offer_id":42737165336637,"sku":null,"price":66.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/6516\/8701\/files\/1734-OB8E_2_765e2ef7-9880-4c99-9a3b-68533f65a07b.jpg?v=1769141553","url":"https:\/\/topsdevice.com\/products\/1734-ob8e-ab-ser-c-point-i-o-digital-source-output-module-genuine-new-1734-ob8e","provider":"topsdevice","version":"1.0","type":"link"}