# IEC photoelectric receiver: normally closed receiver - DC driven Canonical URL: https://eloragrid.ai/symbols/iec-photoelectric-receiver-normally-closed-receiver-dc-driven Publisher: Elora Grid Updated: 2026-10-28 Lookup label: RX Drawing use: Schematic Reference families: IEC, Manufacturer ## Symbol convention Convention: IEC Form: Normally Closed Receiver - DC Driven Autodesk IEC-60617 Symbol Preview: Photoelectric Receiver Switches, HPE12B15 / VPE12B15. This identifies the publisher's library context; exact IEC graphics and database identities are not asserted. Photoelectric receiver form: Normally Closed Receiver - DC Driven. ## In plain English ### What does IEC photoelectric receiver: normally closed receiver - DC driven mean? A photoelectric receiver evaluates light arriving from an associated emitter and provides the documented electrical response. This entry identifies the normally closed receiver - dc driven form in the publisher's IEC-context family. ### A simple example An object crossing a conveyor beam can change the receiver output. The receiver tag should identify its optical partner and the controller input receiving its signal. The normally-closed designation starts with a conducting output or closed contact in the documented reference condition; operation changes that state. This is the DC-supplied form. Preserve supply polarity and confirm the output circuit type from the device wiring diagram. ### What the drawings help you do Normally-open and normally-closed labels describe the documented electrical output form. They do not by themselves establish light-on or dark-on operation; confirm that setting with the device data. ### This particular reference Photoelectric receiver form: Normally Closed Receiver - DC Driven. This entry adds the normally closed receiver - dc driven detail to the broader photoelectric receiver family. Normally-open and normally-closed labels describe the documented electrical output form. They do not by themselves establish light-on or dark-on operation; confirm that setting with the device data. ### Terms - DC: Direct current: electricity flowing in one direction. - Normally open / normally closed: The contact state in the normal condition defined for the drawing. - Signal: Electrical information passed between devices, rather than necessarily the main power supply. Concept diagram: Identify the device and form → Read the connections and state → Check the equipment reference A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram. - [Autodesk IEC-60617 Symbol Preview: Photoelectric Receiver Switches](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-7F8E27FB-B7DF-44CF-957F-0231B0F0B0D0.htm) ## What it represents A photoelectric receiver evaluates light arriving from an associated emitter and provides the documented electrical response. This entry identifies the normally closed receiver - dc driven form in the publisher's IEC-context family. An object crossing a conveyor beam can change the receiver output. The receiver tag should identify its optical partner and the controller input receiving its signal. The normally-closed designation starts with a conducting output or closed contact in the documented reference condition; operation changes that state. This is the DC-supplied form. Preserve supply polarity and confirm the output circuit type from the device wiring diagram. Normally-open and normally-closed labels describe the documented electrical output form. They do not by themselves establish light-on or dark-on operation; confirm that setting with the device data. ## How to read it - The normally-closed designation starts with a conducting output or closed contact in the documented reference condition; operation changes that state. - This is the DC-supplied form. Preserve supply polarity and confirm the output circuit type from the device wiring diagram. - Normally-open and normally-closed labels describe the documented electrical output form. They do not by themselves establish light-on or dark-on operation; confirm that setting with the device data. ## Information to show or reference - Identify the target, sensing mode and expected normal condition. - Label supply, output and connector pins from the actual device diagram. - Reference output circuit type, operating range and controller input. ## Important distinction This entry adds the normally closed receiver - dc driven detail to the broader photoelectric receiver family. Normally-open and normally-closed labels describe the documented electrical output form. They do not by themselves establish light-on or dark-on operation; confirm that setting with the device data. ## Facts - Drawing form: Normally Closed Receiver - DC Driven - Public vendor block names: HPE12B15 / VPE12B15. Autodesk identifiers, not standards database IDs. - Drawing purpose: photoelectric receiver - Graphic scope: Independently authored educational illustration; not certified standard geometry, a terminal pinout or a product footprint. ## Public references - [Autodesk IEC-60617 Symbol Preview: Photoelectric Receiver Switches](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-7F8E27FB-B7DF-44CF-957F-0231B0F0B0D0.htm) — Autodesk. Public Photoelectric Receiver Switches table explicitly lists HPE12B15 / VPE12B15 with this operating or connection form. Vendor graphics are linked, not copied. ## Graphic scope Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.