Keyence LV-N11MN Analog Monitor Laser Amplifier

Keyence LV-N11MN Main Amplifier with Analog Monitor Output

Product Introduction
The Keyence LV-N11MN is the analog-capable main unit in the LV-N series lineup. It carries two control outputs and one external input, just like other main amplifiers. However, it also exposes an analog monitor output that reports received light intensity as a voltage level. This feature supports condition monitoring, threshold tuning, and diagnostics during setup. Moreover, the cable-type connection suits panels where hardwired runs are preferred. The amplifier anchors a chain of up to 17 units and handles all system logic for the connected expansion modules.

Technical Specifications and Performance

Supply voltage is 24 VDC nominal, with an operating window of 10 to 30 VDC. Power consumption tops out at 830 mW, or about 30 mA at 24 V. Users can choose from six response settings, from 80 µs in HIGH SPEED up to 16 ms in MEGA. The analog monitor output sets this model apart, since it streams light intensity data for trend analysis. Output logic switches between LIGHT-ON and DARK-ON. Additionally, the timer supports OFF, 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

• Monitor Output: Analog

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

Mechanical and Environmental Characteristics

The housing is polycarbonate, sized 32.6 × 9.8 × 78.7 mm, with a PVC cable. At 75 g, the unit stays light on the rail. Its narrow 9.8 mm width allows dense channel counts in compact cabinets. Operating temperature ranges from -20 to +55 °C without freezing, and derating applies when multiple units sit side by side. Vibration resistance covers 10 to 55 Hz at 1.5 mm double amplitude on each axis. Shock tolerance reaches 500 m/s², three times per axis. Humidity remains within 35 to 85 % RH without 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

Start by mounting the LV-N11MN on DIN rail next to any planned expansion units. Slide each module together until the expansion connector locks. The full chain, main unit included, must remain within 17 units, and a two-output type counts as two. Next, wire the 24 VDC feed and confirm voltage under load. Route the analog monitor line away from high-current cables to keep readings clean. For network integration, add separately available NU series communication units to the same rail.

Installation Notes:

• Power off the system before connecting or removing expansion units.

• Use a Class 2 or LPS supply to meet safety standards.

• Above 9 connected units, maintain at least 20 V at the supply.

Packaging List

• Keyence LV-N11MN 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 does the analog monitor output provide?
It reports received light intensity as an analog voltage. Technicians use it to observe signal trends and fine-tune thresholds during commissioning.

Q2: How does the LV-N11MN differ from the LV-N11N?
Both are cable-type main units with two outputs and one input. The LV-N11MN adds the analog monitor output, while the LV-N11N omits it.

Q3: Can this amplifier run without expansion units?
Yes. It works alone as a single-channel amplifier. Expansion units are optional and only add sensing channels.

Q4: What is the maximum number of linked units?
A system supports up to 17 units including the main unit. A two-output type consumes two slots in that count.

Q5: How can I add network communication?
The LV-N11MN has no built-in ports. Install NU series network units alongside it to enable fieldbus connectivity.