
Keyence GT2-550 NPN Multi-Head Expansion Unit
The Keyence GT2-550 is a DIN-rail multi-head expansion unit for GT2 series contact sensors. It adds 0.1 µm resolution channels and NPN outputs to a GT2-500 main amplifier.
The LR-W500C belongs to the Keyence LR-W series of self-contained full-spectrum color sensors. This model uses a white LED light source to detect color and photoelectric changes across a wide range. Furthermore, it comes with an M12 connector 4-pin type design, which simplifies wiring in tight spaces.
Industrial teams often need fast, repeatable color detection. Specifically, the LR-W500C delivers a selectable response time of 200 µs, 1 ms, 10 ms, 100 ms, or 500 ms. As a result, it fits both high-speed sorting lines and slower inspection tasks. Besides, the built-in timer supports OFF, ON-delay, OFF-delay, and one-shot modes.
The LR-W500C works with a supply voltage of 10 to 30 VDC, including 10% ripple (P-P). It also requires a Class 2 or LPS power source. Current consumption stays at 65 mA or less at 24 VDC, and 120 mA or less at 12 VDC, with no load.
Output options include NPN open collector or PNP open collector, which users can select. Meanwhile, the output handles 30 VDC or less, 50 mA or less, and residual voltage of 2 V or less. N.O. and N.C. modes are also selectable. For external input, tuning and transmission OFF are available.
Communication support covers IO-Link v1.1 and COM2 at 38.4 kbps on connector-type models. However, this unit has no built-in ports beyond that. In addition, communication expansion is not available.
The detecting distance ranges from 30 to 500 mm, giving good flexibility. The adjustable spot diameter measures approximately ø3.5 mm at 100 mm, ø9 mm at 250 mm, and ø18 mm at 500 mm. Therefore, users can match the spot size to small parts or larger targets.
The LR-W500C weighs approximately 110 g. Its protection rating reaches IP65 and IP67 under IEC60529. This means it resists dust and water jets in demanding factory settings.
Operating temperature spans -20 to +50 °C with no freezing. Relative humidity should stay between 35 and 85 % RH with no condensation. These ratings suit most indoor industrial environments.
First, mount the sensor using its M12 connector 4-pin interface. Next, connect the supply voltage within the 10 to 30 VDC range. Then, select NPN or PNP output to match the controller. After that, set the response time and timer mode for the application.
For color detection, adjust the spot diameter by changing the distance. Besides, keep the lens clean to avoid false readings. Finally, verify the output with a test target before full production.
1x Keyence LR-W500C color sensor
1x M12 connector 4-pin mating cable
1x Mounting bracket and screws
1x Quick setup guide
Q1: What is the detecting distance of the LR-W500C?
A: The LR-W500C detects from 30 to 500 mm, with an adjustable spot size.
Q2: Which output types does this sensor support?
A: It supports NPN or PNP open collector output, selectable by the user.
Q3: Does the LR-W500C offer IO-Link communication?
A: Yes, it supports IO-Link v1.1 and COM2 at 38.4 kbps on connector-type models.
Q4: What is the response time range?
A: Users can choose 200 µs, 1 ms, 10 ms, 100 ms, or 500 ms.
Q5: How is the LR-W500C shipped?
A: We ship via Fedex, UPS, and DHL for fast global delivery.
| Brand Name | |
| Model No. | LR-W500C |
| Product Type | Sensor |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |

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