PSE-PM8DNRL-E3, LANBAO, retro-reflective laser sensor, Sn 2–8 m, NPN, NO and NC, connector M8/4 pins

PSE-PM8DNRL-E3 – Retro-reflective laser sensor with reflector

PSE-PM8DNRL-E3 (LANBAO) is a retro-reflective laser sensor with reflector. It works with a narrow laser beam reflected from the reflector, so it reliably detects even small objects and allows precise alignment over long distances.

Key features

• Sensing distance 2–8 m.
• NPN output, NO and NC contact (programmable) – connects to a PLC digital input or a relay coil.
• Supply 10–30 V DC.
• Connection: connector M8/4 pins.

Technical specifications PSE-PM8DNRL-E3

Wiring of PSE-PM8DNRL-E3 by wire colours

The sensor uses all four pins, so it requires a four-pin cable M8. A three-pin cable would not carry the second output.

The colour coding complies with IEC 60947-5-2. Always compare the actual pin and wire assignment with the diagram in the sensor datasheet (Downloads tab).

Connector pin assignment according to the manufacturer's catalogue.

Connection cable for PSE-PM8DNRL-E3

The sensor has a connector M8, 3 pins, male, so it requires a cable with a femaleconnector. The cable is not included.

• QE8-N4F10 – M8, 4 pins, female, straight, 10 m, PVC, without indication
• QE8-N4G10 – M8, 4 pins, female, angled 90°, 10 m, PVC, without indication

A four-pin cable M8 can be used on a three-pin sensor without restriction – the fourth wire remains unconnected. It does not work the other way round: a three-pin cable would not carry the second output of a four-wire sensor.

PUR version: we do not yet stock a M8 female cable with a PUR jacket. Contact us and we will source it. A cable with a PVC jacket is intended for normal dry machine environments.

Typical applications

• detection of small parts where a standard LED beam is not narrow enough
• precise counting on a fast line
• position monitoring with high repeatability
• applications with long range and precise aiming
• detection of narrow edges and gaps

How to choose and what to watch out for

• NPN output (switches minus) is used mainly in Asian equipment and selected PLCs. For standard European inputs, the PNP variant is usually more suitable.
• NO and NC contact: the output logic can be selected by wiring, so one model covers both the normally open and normally closed function.
• Connector connection M8/4 pins: a separate connection cable with a matching connector is required for operation – you will find it in the Cables with connector category.

PNP or NPN – and what happens if you mix them up

PNP switches the positive pole, so it sends plus to the PLC input. It is the European standard and matches standard digital inputs. NPN switches minus and is used mainly in Asian equipment. If mixed up, the sensor either does not switch at all or reports a permanently active state — it usually will not be damaged, but it will not work.

This model has a NPN. If you need PNP, a variant with the same sensing distance is available — contact us and we will recommend the code.

NO or NC – and why it is not just a matter of convenience

NO (normally open) is an output that is active on detection. NC (normally closed) is active at rest and opens on detection. The difference is a safety one: with NC, a broken wire causes the same reaction as a detection, so the fault shows up immediately. With NO, a broken cable remains unnoticed until someone tries to switch.

This model has the contact NO and NC (programmable).

Similar models in the same series

• PSE-PM8DNRL
• PSE-PM8DPRL

Frequently asked questions

Does PSE-PM8DNRL-E3 have a PNP or NPN output?

PSE-PM8DNRL-E3 has an NPN output with NO and NC contacts (programmable). Check that your PLC input matches this output type.

What is the sensing distance of PSE-PM8DNRL-E3?

The sensing distance (Sn) is 2–8 m.

How is PSE-PM8DNRL-E3 connected?

PSE-PM8DNRL-E3 is supplied with the connection: connector M8/4 pins. A connection cable with a matching connector must be ordered separately.

How many pins should the cable for PSE-PM8DNRL-E3 have?

The sensor has two outputs and uses all four pins, so it requires a four-pin cable. The NO output is on the black wire, NC on the white.

Which cable do I need for PSE-PM8DNRL-E3?

A cable with a female M8 connector – QE8-N4F10 (straight) or QE8-N4G10 (angled 90°), both 10 m with a PVC jacket. A four-pin cable can be used on a three-pin sensor without restriction.