Keyence KV-N24AT Programmable Controller

Keyence KV-N24AT Programmable Controller

Product Introduction

The KV-N24AT belongs to the Keyence KV Nano series, a line of terminal-block type programmable controllers designed for straightforward installation and reliable performance in compact machines. Furthermore, this base unit integrates 14 input points and 10 transistor outputs directly on the main chassis, which reduces wiring effort and panel space requirements. Consequently, engineers frequently deploy this controller in standalone equipment, small conveyors, and simple positioning tasks where cost and footprint matter. The KV-N24AT also supports expansion through backplane modules, allowing users to scale I/O up to 256 points when the application demands it.

Technical Specifications

The controller operates on a supply voltage of 100 to 240 VAC with a tolerance of +10%/-15%, making it suitable for industrial power environments without additional transformers. Additionally, it provides a 24 VDC output power supply with a capacity of 0.6 A, which can energize sensors or small relays directly. The output type is MOSFET transistor (sink/NPN), rated at 30 VDC and 0.5 A per point, which ensures long operational life compared to mechanical relays.

Processing and Programming

Program capacity reaches 8k steps, and the instruction execution speed is a minimum of 50 ns for basic instructions and 170 ns for application instructions. This performance level allows the KV-N24AT to handle logic, interlocking, and basic data operations without noticeable scan-time delays. Programming is possible through Expanded Ladder, KV Script, or mnemonic instructions, and users configure the unit using Keyence's KV STUDIO software.

Positioning and Counting

For motion-related tasks, the KV-N24AT provides 2 axes of positioning pulse output with a maximum frequency of 100 kHz. Meanwhile, the high-speed counter function supports 2 points of 32-bit automatic-reset counting at 100 kHz for single-phase input or 50 kHz for phase-difference input. These features suit applications involving encoders, simple axis drives, or speed measurement.

Communication and Expansion

A built-in RS-232C port with a modular connector supports KV STUDIO connectivity and no-protocol serial communication. For system growth, the backplane accepts up to 8 expansion units, enabling a maximum of 256 I/O points excluding the base unit's own I/O.

Mechanical and Environmental Parameters

The KV-N24AT operates within an ambient temperature range of 0 to +55°C without freezing and a relative humidity of 5 to 95% RH without condensation. Storage temperature extends from -25 to +75°C. The unit withstands vibration at 5–9 Hz with 3.5 mm amplitude and 9–150 Hz at 9.8 m/s² intermittently, and shock acceleration of 150 m/s² for 11 ms in three axes. Its noise immunity complies with IEC standards at 1500 Vp-p, and the insulation resistance is 50 MΩ or higher at 500 VDC. The product weighs approximately 0.47 kg, and Keyence confirms active production status.

Installation Guide

First, mount the KV-N24AT on a DIN rail or directly onto a panel using the provided mounting holes. Next, connect the 100–240 VAC supply to the designated power terminals and verify the ground connection. After that, wire input devices to the 14 input terminals and output loads to the 10 transistor output terminals, observing the sink (NPN) wiring convention. Besides, maintain sufficient clearance around the unit for ventilation and route signal cables away from high-voltage lines to minimize noise. Finally, connect the RS-232C modular plug to a PC running KV STUDIO for programming and testing.

Packaging List

• 1 × Keyence KV-N24AT PLC Base Unit

• 1 × Terminal block cover (pre-installed)

• 1 × Quick start guide

• 1 × Mounting bracket set

FAQ

Q1: What is the difference between the KV-N24AT and the KV-N24AR?
The KV-N24AT uses transistor (sink) outputs for high-speed switching and longer life. The KV-N24AR uses relay outputs, which suit lower-frequency switching or AC loads.

Q2: Can the KV-N24AT operate without expansion modules?
Yes. The base unit provides 14 inputs and 10 outputs, sufficient for many small machines. However, you can add up to 8 expansion units later if the I/O count needs to grow.

Q3: What software is required for programming the KV-N24AT?
Keyence KV STUDIO is the standard configuration tool. It supports ladder diagram creation, simulation, and transfer via the built-in RS-232C port.

Q4: Does the KV-N24AT support positioning control?
Yes. It offers 2-axis pulse output at up to 100 kHz. This is adequate for simple stepper or servo positioning tasks such as dispensing or indexing.

Q5: How is the KV-N24AT shipped?
We ship this controller via Fedex, UPS, or DHL. Each unit is packed with protective foam and a sturdy carton to prevent transit damage.