Keyence LV-N11N Laser Sensor Amplifier Main Unit

Keyence LV-N11N Main Amplifier for Multi-Channel Laser Sensing

Product Introduction
The Keyence LV-N11N acts as the primary controller within an LV-N series laser sensing system. It carries the processing logic and drives the connected expansion units. As a main unit, it offers two control outputs and one external input, which expansion units cannot provide. The cable-type design simplifies wiring in cabinets where connectorized runs are unnecessary. Meanwhile, its slim housing suits dense DIN rail arrangements. This amplifier is the natural starting point for any multi-channel inspection, positioning, or presence-detection project.

Technical Specifications and Performance

The LV-N11N runs on a nominal 24 VDC supply and accepts an operating range of 10 to 30 VDC. Power draw stays modest at 830 mW maximum, or roughly 30 mA at 24 V. Users can pick response times from 80 µs in HIGH SPEED mode up to 16 ms in MEGA mode. This range lets engineers trade speed for stability when targets are dark, shiny, or distant. Output logic is switch-selectable between LIGHT-ON and DARK-ON. Additionally, the timer supports OFF-delay, ON-delay, and one-shot modes from 1 ms to 9,999 ms.

Key Electrical Parameters:

• Supply Voltage: 24 VDC nominal (10–30 VDC operating)

• Response Time: 80 µs (HIGH SPEED) / 250 µs / 500 µs / 1 ms / 4 ms / 16 ms

• Control Outputs: 2 × NPN open collector, 30 V, 100 mA max each

• External Input: 1 input

• Timer Range: 1 ms to 9,999 ms (selectable)

Mechanical and Environmental Characteristics

The LV-N11N uses a polycarbonate case measuring 32.6 × 9.8 × 78.7 mm. Its 9.8 mm width is a key advantage in crowded panels. The unit operates from -20 to +55 °C without freezing, and Keyence applies derating when several units sit side by side. Vibration resistance covers 10 to 55 Hz at 1.5 mm double amplitude across all three axes. Shock resistance reaches 500 m/s², three times per axis. Humidity tolerance spans 35 to 85 % RH with no condensation.

Physical Details:

• Dimensions: 32.6 mm (H) × 9.8 mm (W) × 78.7 mm (D)

• Weight: Approx. 75 g (cable included)

• Case Material: Polycarbonate

• Cable Material: PVC

• Protection Circuit: Reverse polarity, over-current, surge absorber

Installation and System Integration

Installing the LV-N11N starts with DIN rail mounting next to the planned expansion units. Slide each module together until the expansion connector seats firmly. The complete chain, main unit included, must stay within 17 units, and a two-output type counts as two. Next, wire the 24 VDC supply and confirm the voltage stays above the minimum when many units share one feed. Keep cable runs short in HIGH SPEED mode to preserve the 80 µs timing. Finally, for fieldbus connectivity, pair the system with separately available NU series network units.

Installation Notes:

• Power down the system before attaching or removing any expansion unit.

• Use a Class 2 or LPS supply to satisfy safety requirements.

• Above 9 connected units, keep the supply at 20 V or higher.

Packaging List

• Keyence LV-N11N Main Amplifier Unit × 1

• Installation Manual × 1

• Protective Packaging

Shipping: We dispatch orders via Fedex, UPS, DHL with tracking provided.

Frequently Asked Questions

Q1: What separates the LV-N11N from expansion units like the LV-N10?
The LV-N11N is a main unit with two control outputs and one external input. Expansion units carry no outputs and depend on this main unit for logic and signals.

Q2: How many amplifiers can one system hold?
The chain supports up to 17 units including the main unit. A two-output type consumes two slots, so plan the count before ordering.

Q3: Can I change the response time after installation?
Yes. Response time is selectable across six levels, from 80 µs HIGH SPEED to 16 ms MEGA. Shorter times suit fast moving targets, while longer times improve stability.

Q4: What timer modes does the LV-N11N support?
Four modes are available: OFF, OFF-delay, ON-delay, and one-shot. Duration adjusts from 1 ms to 9,999 ms with roughly ±10 % error.

Q5: Does the LV-N11N connect directly to a network?
Not directly. It has no built-in ports. However, NU series communication units mount alongside it to add network capability.