The Keyence LV-N12N is a digital laser sensor amplifier designed as an expansion unit. It belongs to the LV-N Series, which engineers widely use for precise laser sensing tasks. This cable-type model carries one control output and one external input. Users select LIGHT-ON or DARK-ON operation through a simple switch. Furthermore, the LV-N12N supports a fast 80 µs response time in HIGH SPEED mode. That speed suits high-throughput lines and small-part detection. Meanwhile, the unit connects to a main amplifier to build multi-channel systems. In addition, it offers six selectable response modes for flexible tuning. Finally, the polycarbonate housing keeps the unit light and durable.
The LV-N12N delivers strong performance across several operating modes. First, response time options include 80 µs, 250 µs, 500 µs, 1 ms, 4 ms, and 16 ms. Each mode matches a different balance of speed and stability. Second, the timer function supports OFF, OFF-delay, ON-delay, and one-shot operation. Timer values range from 1 ms to 9,999 ms with ±10% maximum error. Moreover, the control output uses an NPN open collector design. It handles 30 V and up to 100 mA per output with residual voltage of 1 V or less. In addition, protection circuits guard against reverse polarity, over-current, and surges. The external input allows remote control of bank switching or other functions.
Expansion capability is a key strength of the LV-N12N. Specifically, users can link up to 17 units in a single expansion bank. A two-output type counts as two units within that limit. Besides that, interference prevention covers 0 to 4 units depending on the selected mode and sensor head. The unit itself has no built-in communication ports. However, the NU Series network units enable network connectivity when added separately. Therefore, the LV-N12N fits both standalone setups and larger networked systems.
The LV-N12N runs on 24 VDC nominal with an operating range of 10 to 30 VDC. Ripple must stay at 10% P-P or below. Power consumption reaches 830 mW maximum at 30 V. At 24 V, current draw is roughly 30 mA. These ratings keep the amplifier efficient in dense control panels. Additionally, the output circuit tolerates 30 V and 100 mA per channel. The low residual voltage of 1 V or less supports reliable signal transfer to PLCs.
The LV-N12N measures 32.6 × 9.8 × 78.7 mm and weighs about 65 g. Its compact body suits tight DIN rail installations. The case uses polycarbonate, while the cable jacket uses PVC. Operating temperature ranges from -20 to +55 °C with no freezing allowed. Derating applies when multiple units mount side by side. Humidity tolerance spans 35 to 85% RH without condensation. Vibration resistance covers 10 to 55 Hz at 1.5 mm double amplitude for two hours per axis. Shock resistance reaches 500 m/s² three times per axis.
Installation of the LV-N12N is straightforward for trained technicians. First, mount the unit onto a DIN rail next to the main amplifier. Next, connect the cable to the main unit through the expansion connector. After that, wire the 24 VDC supply and the NPN output to the controller. Then, set the LIGHT-ON or DARK-ON switch to match the application. Additionally, choose the response mode that fits the required speed. However, keep total connected units at 17 or fewer. Finally, verify interference prevention settings when units sit close together.
1 × Keyence LV-N12N Digital Laser Sensor Amplifier
Q1: What is the main function of the LV-N12N?
A: The LV-N12N acts as an expansion amplifier. It adds sensing channels to a Keyence LV-N main unit.
Q2: How many units can connect in one bank?
A: You can link up to 17 expansion units total. A two-output type counts as two units.
Q3: What output type does this amplifier provide?
A: The LV-N12N uses an NPN open collector output rated for 30 V and 100 mA.
Q4: Does the LV-N12N support network communication?
A: No. It has no built-in ports, but NU Series network units add connectivity separately.
Q5: How do you ship this product?
A: We ship via Fedex, UPS, and DHL for global delivery.
| Brand Name | |
| Model No. | LV-N12N |
| Product Type | Digital Laser Sensor Amplifier |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
