KEYENCE KV-N Series PLC Modules KV-N3AM, KV-N8EXT, KV-N24DT

Technical Dossier

Product Details And Specifications

KEYENCE KV-N Series Technical Notes

The KEYENCE KV-N Series is a compact, high-density programmable logic controller (PLC) platform deployed across global heavy industries including petrochemical refineries, nuclear auxiliary systems, food processing lines, and automotive assembly plants. Its modular backplane architecture allows engineers to configure systems ranging from standalone micro-controllers to distributed I/O networks spanning hundreds of points. The KV-N Series occupies a critical position in mid-range automation infrastructure, particularly in facilities where panel space is constrained and cycle-time determinism is mandatory. Installed base across Asia-Pacific and European process industries remains substantial, making long-term spare parts availability a primary concern for maintenance engineers and procurement teams.

KV-N Series Full Catalog & Functionalities (SKU List)

CPU / Base Units

• KV-N3AM: Compact CPU base unit, 3-slot expansion, built-in USB programming port, 20 kHz high-speed counter input.
• KV-N4AM: 4-slot CPU base unit with dual RS-232C ports and analog I/O option slot.
• KV-N6AM: 6-slot CPU base unit, Ethernet/IP standard, 128k-step program memory.
• KV-N8AM: 8-slot CPU base unit, extended instruction set, supports up to 512 I/O points natively.

Digital I/O Expansion Units

• KV-N8EXT: 8-point digital I/O expansion unit, NPN/PNP selectable, 24 VDC, DIN-rail mount.
• KV-N16EX: 16-point digital input expansion, sink type, 5–24 VDC compatible.
• KV-N16EY: 16-point digital output expansion, transistor source type, 0.5 A per point.
• KV-N32EX: 32-point high-density digital input module, 24 VDC, 40-pin connector.
• KV-N32EY: 32-point high-density digital output module, transistor sink, 40-pin connector.

Analog I/O Modules

• KV-N24DT: 24-point mixed digital I/O with integrated analog conversion, 12-bit resolution, 4–20 mA / 0–10 V selectable.
• KV-NA8V: 8-channel analog voltage input module, ±10 V, 16-bit resolution, 1 ms/ch conversion speed.
• KV-NA4V: 4-channel analog voltage output module, 0–10 V / ±10 V, 12-bit DAC.
• KV-NA4T: 4-channel thermocouple input module, K/J/T/E/R/S/B type, ±0.3°C accuracy.

Communication & Network Adapters

• KV-NE20: Ethernet/IP adapter module, 100BASE-TX, supports explicit and implicit messaging.
• KV-NL20V: CC-Link Ver.2 slave adapter, up to 896 I/O points per station.
• KV-NDP21: PROFIBUS-DP slave module, 12 Mbps, GSD file provided.

Power Supply Units

• KV-N1PU: 24 VDC input power supply unit for KV-N backplane, 5 A output, short-circuit protected.
• KV-N2PU: Dual-rail power supply unit, 100–240 VAC input, redundant output configuration support.