{"product_id":"ta40-0n-yokogawa-terminal-block-unit-40-point-fa-m3-plc","title":"TA40-0N Yokogawa Terminal Block Unit | 40-Point FA-M3 PLC","description":"\u003ch2\u003eYokogawa TA40-0N — 40-Point Terminal Block Unit\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eYokogawa TA40-0N\u003c\/strong\u003e is a 40-point terminal block unit for industrial control wiring. It provides a compact connection interface for compatible Yokogawa PLC I\/O configurations, with a rated voltage of 5–24 V DC and an operating voltage range of 4.5–26.4 V DC.\u003c\/p\u003e\n\n\u003cp\u003eFor panel designers and maintenance engineers, the key selection criteria are connector compatibility, conductor size, per-point current, terminal screw requirements, and available mounting space. The TA40-0N supports conductors from 0.08 to 0.26 mm² (AWG 23–28) and has a maximum current rating of 0.5 A DC per point.\u003c\/p\u003e\n\n\u003ch3\u003eConnection Interface at a Glance\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatible PLC I\/O module → TA40-0N terminal interface → Field wiring → External control devices\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe TA40-0N is a terminal block unit, not a standalone PLC input or output module. Its function is to provide a field-wiring connection point. Signal processing and I\/O functionality depend on the connected module and the wider control system.\u003c\/p\u003e\n\n\u003ch3\u003e01 | Mechanical and Electrical Limits\u003c\/h3\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTA40-0N\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eTerminal block unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of points\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated voltage\u003c\/td\u003e\n\u003ctd\u003e5–24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e4.5–26.4 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum current\u003c\/td\u003e\n\u003ctd\u003e0.5 A DC per point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplicable conductor size\u003c\/td\u003e\n\u003ctd\u003e0.08–0.26 mm² (AWG 23–28)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal block screw\u003c\/td\u003e\n\u003ctd\u003eM2, slotted head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping screw\u003c\/td\u003e\n\u003ctd\u003eM2.6, cross head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal dimensions\u003c\/td\u003e\n\u003ctd\u003e61.4 × 11.8 × 4.57 mm, with terminal cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e50 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temperature\u003c\/td\u003e\n\u003ctd\u003e-20 to 75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating humidity\u003c\/td\u003e\n\u003ctd\u003e10–90% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage humidity\u003c\/td\u003e\n\u003ctd\u003e10–90% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e02 | Compatibility Gate — Check Before Ordering\u003c\/h3\u003e\n\n\u003cp\u003eConnector compatibility must be verified before installing the TA40-0N. According to the supplied product information, this terminal block unit \u003cstrong\u003ecannot be used with the following Yokogawa modules:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eF3YP04\u003c\/li\u003e\n\u003cli\u003eF3YP08\u003c\/li\u003e\n\u003cli\u003eF3YP14\u003c\/li\u003e\n\u003cli\u003eF3YP18\u003c\/li\u003e\n\u003cli\u003eF3NC32\u003c\/li\u003e\n\u003cli\u003eF3NC34\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eDo not assume that a 40-point interface is compatible with every module that has a similar channel count. Check the exact module model, connector arrangement, pin assignment, and system documentation. If replacing an existing terminal block, compare the original part number and the mating connector before purchase.\u003c\/p\u003e\n\n\u003ch3\u003e03 | Wiring Rules for Panel Builders\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor selection:\u003c\/strong\u003e Use wire within the specified 0.08–0.26 mm² (AWG 23–28) range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent loading:\u003c\/strong\u003e Keep each point within the maximum rating of 0.5 A DC. Do not interpret this as a 0.5 A rating for the entire terminal block.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage limits:\u003c\/strong\u003e Confirm that the connected circuit operates within 4.5–26.4 V DC and respects the rated operating conditions of the connected I\/O hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool selection:\u003c\/strong\u003e Use a suitable slotted tool for the M2 terminal block screw and a cross-head tool for the M2.6 clamping screw.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical clearance:\u003c\/strong\u003e Allow for the stated dimensions, terminal access, wire routing, and any additional clearance required by the complete assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal identification:\u003c\/strong\u003e Label field conductors and verify point assignments against the wiring diagram before energizing the system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe supplied specification does not state a tightening torque. Do not guess the torque value; obtain it from the applicable Yokogawa documentation. Incorrect tightening can damage small terminals or lead to intermittent connections.\u003c\/p\u003e\n\n\u003ch3\u003e04 | Suitable Equipment and Application Scenarios\u003c\/h3\u003e\n\n\u003cp\u003eWhen paired with a compatible I\/O module, the TA40-0N can be used as part of the field-wiring interface in industrial control panels and automation assemblies.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePLC control cabinets:\u003c\/strong\u003e Organizing field connections for supported digital I\/O configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachine control panels:\u003c\/strong\u003e Providing a compact terminal interface for low-voltage DC control circuits within the specified limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment skids:\u003c\/strong\u003e Connecting compatible field wiring in packaged process or utility equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduction-line control:\u003c\/strong\u003e Supporting structured wiring for discrete signals between the field and a PLC I\/O system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance and replacement:\u003c\/strong\u003e Replacing a matching terminal block where the installed module and connector arrangement have been verified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThese are potential use cases, not a guarantee of compatibility with a particular PLC or field device. The connected module determines the actual I\/O function, and the full assembly must meet its electrical and mechanical requirements.\u003c\/p\u003e\n\n\u003ch3\u003e05 | Installation and Commissioning Checklist\u003c\/h3\u003e\n\n\u003col\u003e\n\u003cli\u003eConfirm that the complete model number is TA40-0N.\u003c\/li\u003e\n\u003cli\u003eVerify that the mating I\/O module is compatible and is not included in the exclusion list above.\u003c\/li\u003e\n\u003cli\u003eCompare the connector and pin arrangement with the wiring documentation.\u003c\/li\u003e\n\u003cli\u003eCheck conductor size, insulation condition, wire preparation, and point-by-point labeling.\u003c\/li\u003e\n\u003cli\u003eConfirm that each point's current and the circuit voltage remain within the specified limits.\u003c\/li\u003e\n\u003cli\u003eInspect terminal screws and clamping hardware using the appropriate tools and documented tightening requirements.\u003c\/li\u003e\n\u003cli\u003eBefore returning the system to service, check wiring continuity and point mapping using the site's approved test procedure.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003e06 | Field Troubleshooting Matrix\u003c\/h3\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSymptom\u003c\/th\u003e\n\u003cth\u003ePossible cause\u003c\/th\u003e\n\u003cth\u003eRecommended check\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOne field signal is missing\u003c\/td\u003e\n\u003ctd\u003eLoose conductor, incorrect point assignment, damaged wire, or a field-device issue\u003c\/td\u003e\n\u003ctd\u003eCompare the terminal label with the wiring diagram and check continuity with power isolated.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeveral signals fail at once\u003c\/td\u003e\n\u003ctd\u003eIncorrect connector seating, common wiring issue, or a problem in the connected I\/O module\u003c\/td\u003e\n\u003ctd\u003eInspect the connector interface and investigate shared circuits before replacing the terminal block.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntermittent signal behavior\u003c\/td\u003e\n\u003ctd\u003eLoose terminal hardware, conductor damage, or vibration-related connection issues\u003c\/td\u003e\n\u003ctd\u003eInspect the wiring and terminal condition. Re-tighten only according to the documented torque requirements.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal or conductor shows heat damage\u003c\/td\u003e\n\u003ctd\u003eExcessive current, poor contact, unsuitable conductor, or damaged hardware\u003c\/td\u003e\n\u003ctd\u003eDe-energize the circuit and investigate the load current, conductor size, and connection quality before reuse.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplacement unit does not mate correctly\u003c\/td\u003e\n\u003ctd\u003eWrong model, incompatible module, or different connector arrangement\u003c\/td\u003e\n\u003ctd\u003eStop installation and verify the complete part number and manufacturer's compatibility information.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePLC status does not match field wiring\u003c\/td\u003e\n\u003ctd\u003eIncorrect point mapping, connected module issue, or a wiring fault\u003c\/td\u003e\n\u003ctd\u003eTrace the signal from the field device through the terminal interface to the relevant I\/O channel.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The TA40-0N is a connection component. It does not independently diagnose PLC logic or generate I\/O status. If a signal problem persists, test the wiring interface first, then investigate the connected I\/O module, field device, and PLC program.\u003c\/p\u003e\n\n\u003ch3\u003e07 | Global PLC Spare HUB's Insight\u003c\/h3\u003e\n\n\u003cp\u003eFor the TA40-0N, the most important purchasing check is not the 40-point count alone; it is the match between the terminal block and the installed I\/O module. The explicit incompatibility list should be checked before ordering, particularly in legacy systems where visually similar connectors may use different assignments.\u003c\/p\u003e\n\n\u003cp\u003eFor maintenance replacements, photograph the original unit, record the mating module's full model number, and label the field wires before removal. This reduces the risk of cross-wiring and shortens recommissioning time. If a terminal shows heat damage or intermittent contact, identify the cause before installing a replacement so that an overloaded or poorly terminated circuit does not damage the new component.\u003c\/p\u003e\n\n\u003cp\u003eBecause the product is rated for up to 0.5 A DC per point, review each circuit's current demand and the connected equipment's requirements. The point rating should not be treated as proof that every connected load is suitable. Confirm the complete circuit design and the limits of the mating module.\u003c\/p\u003e\n\n\u003ch3\u003e08 | Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ1: Can the TA40-0N be selected based only on the 40-point count?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The point count is only one selection factor. Confirm the exact mating module, connector type, pin assignment, voltage, current, and conductor requirements. The supplied documentation specifically excludes several modules from use with this terminal block.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ2: Does the 0.5 A DC rating apply to all 40 points combined?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe supplied specification states 0.5 A DC per point. It does not establish a total allowable current for the complete assembly. Check the connected module's limits, circuit arrangement, wiring conditions, and manufacturer's guidance before calculating the system load.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ3: What should I check if a new terminal block fits mechanically but the signals are incorrect?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDo not assume mechanical fit confirms electrical compatibility. Compare the connector pinout and point assignments with the wiring diagram, then verify the connected module model. Incorrect mapping or a different connector assignment can cause signal errors even when the parts appear to mate.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ4: What information should I send a supplier to reduce the risk of ordering the wrong part?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProvide the full TA40-0N model, the mating I\/O module model, a clear photo of the original terminal block and connector, the required quantity, and the destination. For legacy systems, include the relevant cabinet drawing or terminal assignment where available.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ5: Can a damaged terminal block be reused after tightening the screws?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNot automatically. If the housing, screw threads, clamping parts, or contact surfaces are damaged or heat-discolored, further tightening may not restore a reliable connection. Isolate the circuit, identify the cause, and replace damaged components according to the manufacturer's maintenance requirements.\u003c\/p\u003e\n\n\u003ch3\u003e09 | Ordering, Warranty and Shipping\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e TA40-0N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Yokogawa 40-point terminal block unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months, subject to the seller's written warranty terms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping methods:\u003c\/strong\u003e FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch target:\u003c\/strong\u003e 24–48 hours after order and payment confirmation, subject to stock availability and order processing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eRequest a quote:\u003c\/strong\u003e Send the model number \u003cstrong\u003eTA40-0N\u003c\/strong\u003e, required quantity, destination, and mating module model to help verify compatibility before ordering.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":67644159262902,"sku":"TA40-0N","price":106.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/TA40-0N-1.jpg?v=1792046385","url":"https:\/\/www.plcsparehub.com\/products\/ta40-0n-yokogawa-terminal-block-unit-40-point-fa-m3-plc","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}