DD-670 Series Slot Photoelectric Sensor (Pin/Plug-in Connector Type)

Name: DD-670 Series Slot Photoelectric Sensor (Pin/Plug-in Connector Type)
Brand: DAIDISIKE
SKU: dd-670-series-slot-photoelectric-sensor
Availability: InStock

Plug-in connector slot photoelectric sensor, 5 mm slot, 20 models across 5 housing styles, 4 NPN/PNP output versions.

DD-670 Series Slot Photoelectric Sensor (Pin/Plug-in Connector Type) - product photo

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Technical Specifications

Output type	N=NPN, indicator lit when light received / P=PNP, indicator lit when light received / NA=NPN, indicator lit when beam blocked / R=PNP, indicator lit when beam blocked; connector (L) terminal open = Dark-ON, (L) shorted to (+) = Light-ON
Detection method	Through-beam slot type, plug-in connector
Light source	Infrared light
Detection slot	Slot 5 mm (width 7 mm)

Overview

The DD-670 series is a U-shaped (fork/slot-type) photoelectric sensor that detects an interrupter flag or vane passing through its 5 mm detection slot (7 mm slot width), using an infrared emitter and receiver mounted opposite each other. Unlike lead-wire slot sensors that are wired directly into the control cabinet, the DD-670 connects via a plug-in connector, so the sensor body can be unplugged and swapped without rewiring. It is intended for machine builders, panel builders, and maintenance teams on automated equipment - home appliance production lines, indexing/cam machinery, and feeder systems - who need a standard-mount slot sensor that is quick to replace in the field.

The series covers 20 catalog part numbers across 5 housing styles (standard DD-670, L-type DD-671, T-type DD-672, and two close-mounting types DD-673/DD-674) and 4 output/indicator versions (N, P, NA, R), giving NPN or PNP output with either a Light-ON or Dark-ON indicator. The operation logic (Light-ON vs Dark-ON output) can also be set on site via the connector's (L) terminal, without changing the part number.

Features & Benefits

Plug-in connector body - swap the sensor in seconds, no rewiring

Because the sensor connects through a plug-in connector rather than fixed lead wires, a failed unit can be unplugged and a replacement plugged in directly by a line operator, without opening the control cabinet or involving an electrician.

Four output/indicator versions selectable by model suffix (N / P / NA / R)

N = NPN with the indicator lit when light is received; P = PNP with the indicator lit when light is received; NA = NPN with the indicator lit when the beam is blocked; R = PNP with the indicator lit when the beam is blocked. Each combination is a distinct model number, so equipment designers can specify the exact version by part number.

Operation mode selectable via the connector (L) terminal

Leaving the connector's (L) terminal open sets the output to Dark-ON (energizes when the beam is blocked); shorting (L) to V+ sets the output to Light-ON (energizes when the beam is received). This lets one physical unit cover both logic requirements on site.

Five housing styles, including close-mounting versions

Standard (DD-670), L-shaped (DD-671), T-shaped (DD-672), and two close-mounting styles (DD-673, DD-674) give machine designers layout flexibility, including placing multiple sensors side by side in tight spaces.

Infrared emitter, 5 mm detection slot (7 mm slot width)

The sensor uses an infrared (non-visible) light source across a 5 mm slot with a 7 mm slot width, matching the interrupter-flag geometry commonly used with this slot dimension.

20 catalog part numbers cover 5 housing shapes x 4 output/indicator types

Standard, L-type, T-type and two close-mounting types are each offered in N/P/NA/R versions, giving a defined ordering matrix rather than a single fixed configuration.

Applications

Home/origin position sensing on automated machinery — The plug-in connector body suits equipment that runs continuously and needs fast field replacement to minimize downtime, which matches the sensor's mounting/connector design.

Cam and indexing-table flag detection — Slot-type infrared detection of a passing flag/vane is the sensor's core detection method, well suited to rotary indexing mechanisms.

Feeder material level (full/empty) signaling — A flag or paddle interrupting the 5 mm slot can be used as a presence/absence signal in feeder or hopper mechanisms.

OEM equipment builders using pre-terminated wiring harnesses — The connector-based interface allows equipment builders to pre-terminate harnesses and plug sensors in during final assembly, rather than wiring each sensor individually.

Field service and spare-parts stocking for automated lines — Because the (L) terminal lets one physical part serve either Light-ON or Dark-ON logic, maintenance teams can stock a single spare part number to cover both output logics of the same version.

Multi-point, side-by-side detection in compact mechanisms — The DD-673/DD-674 close-mounting housings are specifically intended for placing multiple sensors adjacent to one another.

Models & Ordering Information

Standard type

DD-670NDD-670PDD-670NADD-670R

L-type

DD-671NDD-671PDD-671NADD-671R

T-type

DD-672NDD-672PDD-672NADD-672R

Close-mounting type 1

DD-673NDD-673PDD-673NADD-673R

Close-mounting type 2

DD-674NDD-674PDD-674NADD-674R

20 models total = 5 housing styles x 4 output/indicator versions (N/P/NA/R). Suffix key: N = NPN, Light-ON indicator; P = PNP, Light-ON indicator; NA = NPN, Dark-ON indicator; R = PNP, Dark-ON indicator.

How to Select

Selecting a DD-670 series part number involves three independent choices - housing style, output transistor type, and indicator logic - which together determine the model suffix.
Select by housing style: standard body -> DD-670; L-shaped body -> DD-671; T-shaped body -> DD-672; close-mounting (narrow-pitch side-by-side) body style 1 -> DD-673; close-mounting body style 2 -> DD-674. If several sensors must be mounted side by side at narrow pitch, prioritize DD-673/DD-674.
Select by output transistor and indicator logic (suffix): N = NPN output, indicator lit when light is received (Light-ON indicator); P = PNP output, indicator lit when light is received (Light-ON indicator); NA = NPN output, indicator lit when the beam is blocked (Dark-ON indicator); R = PNP output, indicator lit when the beam is blocked (Dark-ON indicator). Choose NPN or PNP to match the downstream PLC/controller input type, and choose the indicator logic to match on-site commissioning habits.
Fine-tune the on-site operation logic independently of the model choice: if the operation logic needs to switch without changing the part number, leave the connector's (L) terminal open for Dark-ON output, or short (L) to V+ for Light-ON output. This is a wiring choice, separate from the model selection above, and can be re-adjusted on the same unit.
Check the slot dimension: confirm the interrupter flag/vane can pass smoothly within the 5 mm slot (7 mm slot width).

📘 Need the full method? NPN vs PNP Sensor Outputs Explained

When NOT to specify the DD-670 — and what to use instead

The interrupter flag or vane is thicker than the 5 mm slot (7 mm slot width) can pass

Why not: The DD-670 series has a fixed detection slot of 5 mm with a 7 mm slot width; the source material gives no minimum-object or wide-tolerance figures that would extend beyond this fixed opening.

Use instead: a wider-slot model such as DD-303N/DD-403N (13 mm gap) for thicker or loosely-guided parts

The equipment cannot accommodate a plug-in connector body and needs a pre-terminated lead-wire or fixed-cable sensor instead

Why not: The DD-670 series is specifically a plug-in connector type, designed so the sensor body itself unplugs from the harness; this is the defining feature of the series, not an optional variant.

Use instead: a pre-wired cable-type slot sensor such as EE-SX67 (1 m/2 m/3 m factory-terminated cable) where a fixed lead is preferred

The application needs a documented response time, minimum detectable object size, IP rating, or supply voltage figure to size the sensor for fast counting or a harsh environment

Why not: The source specs for DD-670 cover only detection method, slot dimension, light source, and output/logic options -- no response frequency, minimum object size, IP rating, or supply voltage/current figures are published for this series.

Use instead: a series with those figures documented, such as FS-KNS (0.3 ms response, IP64) or DD-L25/L45 (IP65), if those parameters are hard requirements

Specifications we do not publish yet

We only publish a figure once we are confident it is true. The items below are still being validated through further testing and real-world customer feedback, so for now we would rather leave them open than guess. If one of them matters to your design, ask us for the latest validated status.

Minimum detectable object size is not stated in the source material
Response time / response frequency is not stated
Supply voltage and current consumption are not stated
Protection (IP) rating is not stated
Operating and storage temperature range is not stated
Hysteresis (differential travel) is not stated
MTBF / rated mechanical or electrical lifetime is not stated
Connector pin-out and mating-connector part number are not stated beyond the (L) logic-select terminal
No certification documents are published on the product page; available on request only, specific standards/marks not stated
Slot depth (fork insertion depth) is not stated

Frequently Asked Questions

What does the model suffix N, P, NA, R mean on the DD-670 series?

The suffix indicates the output transistor type and indicator logic: N = NPN output with the indicator lit when light is received; P = PNP output with the indicator lit when light is received; NA = NPN output with the indicator lit when the beam is blocked; R = PNP output with the indicator lit when the beam is blocked.

Can I change the sensor's operation logic (Light-ON vs Dark-ON) without changing the part number?

Yes. The connector's (L) terminal can be left open for Dark-ON operation, or shorted to V+ for Light-ON operation, allowing the same physical unit to serve either logic.

How is the DD-670 sensor connected to the machine's wiring?

It uses a plug-in connector rather than fixed lead wires, so the sensor body can be unplugged and replaced directly without rewiring the control cabinet.

What is the detection slot size on the DD-670 series?

The slot is 5 mm with a 7 mm slot width, per the catalog specification.

What light source does the DD-670 series use?

An infrared (IR) emitter and receiver mounted opposite each other across the slot.

How many housing styles and models are available in the DD-670 series?

Five housing styles (standard DD-670, L-type DD-671, T-type DD-672, and two close-mounting types DD-673/DD-674), each offered in four output/indicator versions (N/P/NA/R), for 20 total catalog part numbers.

What are the close-mounting versions (DD-673/DD-674) for?

They are intended for placing multiple sensors side by side in narrow-pitch, multi-point detection layouts.

Can I get certification documents for the DD-670 series?

Certification documents are available on request.