Последнее обновление:. October 7, 2026
Быстрый ответ: Power supply terminal torque records should link the actual supplied full model, original joint marking, applicable instruction and recorded assembly result. The photographed MDR-40-24 marks 4.4 Lb-in; that marking is not a universal value for another model or another joint.
Ключевые выводы
- Identify the actual full model and terminal before transcribing an instruction.
- Keep the instruction, intended tool setting and actual assembly result distinct.
- Preserve the applicable units and source document with the OEM build record.
- Use the documented mounting geometry without inferring customer loads or service clearances.
A terminal torque entry becomes useful when another person can identify the joint, the supplied power supply and the instruction used to assemble it. A number copied into a generic checklist leaves those links uncertain. Purchasing, panel assembly and service teams need a shared record that follows the actual component through the build.
The WEHO MDR-40-24 is the physical reference in this article. Its photographed label reads 24V/1.7A, INPUT: 100–240VAC 1.1A, 50/60Hz, и Terminal torque 4.4 Lb-in. These are transcriptions of that supplied-unit reference. They do not establish the complete fastening process for a customer panel or authorize applying the same number to another model.
Identify the supplied unit before choosing the instruction
Record the full model, the item number used on the bill of materials and the identifying information present on the received component. An order for an MDR series product is less specific than a record for MDR-40-24. Different output versions may share a case outline, so an outline or a promotional heading alone cannot identify the unit.
Keep a readable label photograph or an equivalent controlled receiving record with the assembly documentation. A photograph must preserve the actual output and input markings. If the purchase document, product label and retained technical document disagree, resolve that difference before releasing an instruction for the build. Do not change the label transcription to match a convenient family description.
This distinction matters for the reference unit. Its physical input marking is 100–240VAC. Broader input information in family literature describes a different scope of evidence and should retain its own document reference. An assembly record should show which statement came from the physical unit and which came from an applicable controlled instruction.
Link the torque entry to a particular terminal
The source front has six upper openings: four DC output positions marked +V, +V, −V and −V, followed by two DC OK relay-contact positions. The lower row has three openings marked protective earth, N and L. The relay contact is not an additional power-output pair.
Use the terminal identification in the applicable component documentation and the panel drawing to name the joint. Record the actual conductor reference, destination and instruction revision associated with that joint. A single checked box beside the power supply model cannot tell a service technician whether an entry concerned an AC input, a DC output or a signal connection.
The printed 4.4 Lb-in statement provides a source reference for this unit’s terminal record. It is not a new OEM fastening specification created by this article. The responsible assembly instruction must determine the applicable joint, conductor preparation, tool and acceptance requirements. A casing fastener or rail latch belongs to a different mechanical interface and should not inherit a terminal entry.
Keep instruction, tool and result as separate fields
A practical record can retain the component identity, terminal identifier, applicable instruction revision, conductor or harness reference, tool identification, operator and date. Where the controlled process requires a measured or recorded result, keep that result in its own field. Do not present a value copied from a label as evidence that a joint was assembled or measured.
The same distinction applies to a tool setting and a completed assembly record. A setting records an intended operation; the result records what the approved process actually observed. Teams should use the terminology and acceptance method defined for their build rather than inventing a universal pass condition for all power supplies.
If an instruction contains an unclear unit, an unreadable marking or an unresolved component variant, return that question to the document owner. Quietly replacing one unit with another or borrowing a value from a visually similar product breaks traceability. The record should make the source of the accepted instruction visible to the next person in the workflow.
Preserve the actual enclosure and access context
The complete MDR-40 mechanical drawing shows a body 40mm wide, 90mm high and 100mm deep. It identifies the supported TS35 rail profiles. The source enclosure has a white front, a blue ribbed body, a rear mounting interface and a lower latch. It has no fan or added chassis feet.
These dimensions help teams retain the real component context in a panel record. They do not define a customer’s wiring bend radius, service clearance or thermal layout. Those requirements remain part of the actual enclosure design and the applicable instructions. Keep the supplied mechanical drawing with the chosen component rather than estimating the service envelope from an enlarged picture.
The application views show the selected MDR-40-24 disconnected in documentary layouts, with the product visibly engaged at its documented rear rail interface. A 35mm rail provides a physical scale reference. Background indicators are lit; they do not establish a power connection or compatibility with the selected unit. The views do not demonstrate a powered installation of the selected MDR-40-24, verify a robot or packaging-machine load, or report a completed torque operation.
Make the handover usable for service
Before handing the panel record to another team, check that the full model, terminal identifier, instruction reference and recorded result can be read together. Include the drawing or record location needed to find the joint. A service team should not have to infer the intended terminal from the output voltage alone.
A replacement component requires a fresh identity check against the controlled build documents. Retaining the previous record is useful history; treating it as approval for a different component is a separate decision that the responsible engineering process must make. The same discipline supports receiving inspection, panel assembly and later maintenance without inventing a common torque rule for every terminal block.
Заключение
Power supply terminal torque records support OEM assembly traceability when the component identity, actual joint, applicable instruction and required result remain connected. Preserve the original MDR-40-24 reference and controlled build documents; a copied label value or illustrative layout does not establish completion of the real assembly.
For the product-family context, see the official WEHO MDR-40 page. Keep the physical unit, complete mechanical drawing and applicable supplied instructions together when preparing the assembly record.
Часто задаваемые вопросы
Is 4.4 Lb-in a universal WEHO power supply torque value?
No. It is a marking on the photographed MDR-40-24 reference. Use the applicable supplied-unit instruction and controlled OEM assembly documents for the actual joint.
Can an output rating identify the correct terminal?
Not by itself. Keep the full model and the original terminal markings together. In this reference, the DC output positions and the DC OK relay contacts have different functions.
Does a copied label value prove a terminal was assembled?
No. A source value, a tool setting and an actual assembly result are separate records. Preserve the result required by the controlled process.
May a terminal torque entry be used for the DIN latch or case screws?
Do not transfer an entry between different interfaces. Identify the actual joint and use the instruction that applies to it.
Do the application images prove equipment compatibility?
No. They show the selected MDR-40-24 disconnected and illustrate source-backed mechanical geometry. Lit background indicators do not establish a power connection or load compatibility with it. Customer load selection and enclosure approval require the actual design evidence.
