PRODUCTS
Sensors
Industrial Photoelectric Sensors for Automation and Machine Control
ATC Diversified Electronics offers industrial photoelectric sensors for detecting objects, parts, materials, and changes in position within automated machinery and industrial processes. The collection includes the 7640, 7650, and 7680 Series, providing cylindrical and compact self-contained sensor options for OEM equipment, material handling, packaging, machine control, and other automation applications.
Depending on the series, ATC photoelectric sensors provide DC or universal AC/DC power, NPN transistor, relay, FET, or solid-state outputs, multiple sensing modes, and NEMA 4 housings. These options allow the sensor to be matched to PLC inputs, relay-controlled circuits, existing machine voltage, available mounting space, and the sensing method required by the application.
From easy-to-mount 18 mm cylindrical sensors to a smaller self-contained photoelectric sensor, ATC provides several configurations for incorporating non-contact object detection into industrial control systems.
Why Choose ATC Photoelectric Sensors?
Non-Contact Object Detection: Photoelectric sensing allows objects or materials to be detected without requiring physical contact with the target.
Multiple Sensing Modes: The 7640, 7650, and 7680 Series are available in multiple operating modes, allowing the sensing arrangement to be selected according to the target, available mounting positions, and application requirements.
PLC-Compatible Output Options: The 7640 Series uses an NPN transistor output suited for fast response and connection to PLC and other compatible DC inputs.
Relay and Electronic Outputs: The 7650 Series provides SPDT relay or FET output options, while the 7680 Series is available with NPN, relay, or solid-state outputs.
AC/DC Power Options: The 7650 Series provides universal AC/DC supply capability, while selected 7680 configurations operate from either 10-30 VDC or 10-135 VAC/DC.
Industrial Enclosures: All three sensor families are specified with NEMA 4 housings for industrial environments.
Compact Installation: The 7640 and 7650 use an easy-to-mount 18 mm cylindrical housing, while the 7680 provides a smaller self-contained package for applications where mounting space is limited.
7640 Series 18mm Cylindrical Photoelectric Sensors
The 7640 Series Cylindrical Photoelectric Sensor provides an economical sensing solution in an 18 mm cylindrical housing. The series operates from a 10-30 VDC supply and uses an NPN transistor output for connection to compatible PLC and DC control inputs.
The 7640 Series is available in four operating modes and features a potted NEMA 4 housing. ATC specifies an operating temperature range from -13°F to 140°F.
7650 Series Self-Contained 18mm Photoelectric Sensors
The 7650 Series combines an 18 mm cylindrical package with universal AC/DC power capability and a choice of SPDT relay or FET output. This makes the series useful where the sensing device must interface with different industrial control architectures.
Like the 7640 Series, the 7650 is available in four operating modes and uses a potted NEMA 4 housing. ATC specifies an operating temperature range from -13°F to 140°F.
7680 Series Mini Self-Contained Photoelectric Sensors
The 7680 Series Mini Self-Contained Photoelectric Sensor provides photoelectric sensing in a compact package with a choice of 10-30 VDC or 10-135 VAC/DC power, depending on configuration.
Available output types include NPN, relay, and solid-state outputs. The series also includes polarized retroreflective configurations, an output LED, multiple operating modes, and a NEMA 4 housing.
Photoelectric Sensors for Industrial Automation
Photoelectric sensors are commonly used where machinery must determine whether a part, package, product, or other target is present without making physical contact. Applications can include packaging machinery, conveyors, material handling, production equipment, counting systems, machine sequencing, and other automated processes.
The sensor output can be connected to compatible PLC inputs, relays, counters, timers, or other machine-control equipment so the detected condition can become part of the overall control sequence.
Find the Right Photoelectric Sensor
Selecting the right industrial photoelectric sensor depends on the available supply voltage, required sensing method, target characteristics, sensing distance, output type, PLC or control-system input, mounting space, environmental conditions, response requirements, and wiring configuration.
Explore the ATC 7640, 7650, and 7680 Series above to compare cylindrical and compact housings, DC and AC/DC power options, NPN, relay, FET, and solid-state outputs, and available sensing configurations for industrial automation applications.
Industrial Photoelectric Sensor FAQs
What is a photoelectric sensor?
A photoelectric sensor uses emitted and received light to detect the presence, absence, or position of an object without requiring direct physical contact with the target.
What sensors does ATC Diversified Electronics offer?
The current ATC Sensors collection includes the 7640 Series Cylindrical Photoelectric Sensor, 7650 Series Self-Contained 18mm Cylindrical Photoelectric Sensor, and 7680 Series Mini Self-Contained Photoelectric Sensor.
What is an 18mm cylindrical photoelectric sensor?
An 18mm cylindrical photoelectric sensor places the optical sensing electronics in a threaded cylindrical housing approximately 18 mm in diameter. This format is commonly used where a compact sensor must be mounted through a bracket, machine frame, or equipment panel.
What features does the ATC 7640 Series provide?
The 7640 Series operates from 10-30 VDC, provides an NPN transistor output, is available in four operating modes, and uses a potted NEMA 4 cylindrical housing. Its transistor output is designed for fast response and connection to compatible PLC and DC inputs.
What features does the ATC 7650 Series provide?
The 7650 Series provides universal AC/DC supply capability, four operating modes, and a choice of SPDT relay or FET output in an easy-to-mount 18mm cylindrical NEMA 4 housing.
What features does the ATC 7680 Series provide?
The 7680 Series is a compact self-contained photoelectric sensor available with 10-30 VDC or 10-135 VAC/DC power depending on configuration. Output choices include NPN, relay, and solid-state outputs, and the series includes polarized retroreflective options, an output LED, and a NEMA 4 housing.
What is the difference between the 7640 and 7650 Series?
Both use an 18mm cylindrical housing and are available in four operating modes. The 7640 operates from 10-30 VDC and uses an NPN transistor output, while the 7650 provides universal AC/DC supply capability and offers SPDT relay or FET outputs.
What is the difference between the 7650 and 7680 Series?
The 7650 is an 18mm cylindrical sensor with universal AC/DC power and relay or FET outputs. The 7680 uses a smaller self-contained housing and provides a choice of DC or AC/DC supply configurations with NPN, relay, or solid-state outputs.
Can ATC photoelectric sensors connect to a PLC?
Yes, when the sensor output and PLC input are electrically compatible. The 7640 Series specifically provides an NPN transistor output intended for connection to compatible PLC and other DC inputs. Other ATC sensor families provide relay, FET, or solid-state output options.
What is an NPN photoelectric sensor output?
An NPN transistor output is an electronic switching output commonly used with compatible DC control and PLC inputs. The input requirements of the connected controller should be checked to confirm compatibility with the selected sensor.
When would I choose a relay-output photoelectric sensor?
A relay output can be useful when the sensor must provide an isolated switching contact for a compatible control circuit. The 7650 and 7680 Series include relay-output configurations.
What is a polarized retroreflective photoelectric sensor?
A polarized retroreflective sensor sends light toward a reflector and evaluates the returned polarized light. This sensing method can help distinguish the intended reflector from some reflective target surfaces. Polarized retroreflective configurations are available in the 7680 Series.
Are ATC photoelectric sensors NEMA 4 rated?
Yes. ATC specifies NEMA 4 housings for the 7640, 7650, and 7680 Series. The installation should still follow the applicable product instructions and wiring requirements.
What operating temperature do the 7640 and 7650 Series support?
ATC specifies an operating temperature range of -13°F to 140°F for both the 7640 and 7650 Series.
Where are industrial photoelectric sensors used?
Photoelectric sensors can be used in packaging equipment, conveyors, material handling, production machinery, counting systems, automated assembly, machine sequencing, and other applications where non-contact object detection is required.
How do I choose the right ATC photoelectric sensor?
Consider the supply voltage, sensing method, required sensing distance, target characteristics, output type, PLC or controller compatibility, available mounting space, environmental conditions, response requirements, and whether a cylindrical or compact self-contained housing is preferred.