Fuji Electric NQ2P Series Modules NQ2P20R-14

Technical Dossier

Product Details And Specifications

Fuji Electric NQ2P Series Technical Notes

The Evolution of NQ2P Architecture

The NQ2P series was introduced by Fuji Electric as a successor to the earlier NQ series compact PLCs, targeting applications requiring higher I/O density and improved network integration. Early NQ2P units operated on a proprietary backplane bus with fixed I/O configurations. Subsequent hardware revisions introduced modular expansion racks, enabling engineers to scale from 14-point base units up to 256+ I/O points through cascaded expansion modules. Communication capabilities evolved from RS-232C and RS-485 serial interfaces to include Ethernet TCP/IP adapters and Profibus-DP connectivity, allowing NQ2P controllers to integrate into modern SCADA and DCS architectures without full system replacement. The NQ2P20R-14 specifically represents the relay-output variant of the 20-point base unit, a configuration widely specified in motor control and solenoid valve applications due to its mixed AC/DC load switching capability. As the NQ2P series has entered its mature lifecycle phase, Fuji Electric has transitioned new project specifications toward the NX series and SPH series platforms; however, the NQ2P remains in active maintenance support across thousands of installed sites globally.

NQ2P Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked models within the Fuji Electric NQ2P series. Models are classified by functional category.

CPU / Base Units

• NQ2P20R-14: 20-point base unit, 14 DI / 6 relay DO, built-in RS-232C port
• NQ2P20T-14: 20-point base unit, 14 DI / 6 transistor DO (sink), high-speed pulse output
• NQ2P20S-14: 20-point base unit, 14 DI / 6 transistor DO (source), NPN/PNP selectable
• NQ2P28R-14: 28-point base unit, 16 DI / 12 relay DO, expanded relay output capacity
• NQ2P28T-14: 28-point base unit, 16 DI / 12 transistor DO, pulse train output capable
• NQ2P36R-14: 36-point base unit, 20 DI / 16 relay DO, mid-range I/O density
• NQ2P36T-14: 36-point base unit, 20 DI / 16 transistor DO, suitable for servo interface

Digital Input (DI) Expansion Modules

• NQ-X16D: 16-point DC digital input expansion module, 24VDC sink/source
• NQ-X32D: 32-point DC digital input expansion module, high-density I/O expansion
• NQ-X8D: 8-point DC digital input module, compact slot-mount design

Digital Output (DO) Expansion Modules

• NQ-Y16R: 16-point relay output expansion module, 250VAC / 2A per point
• NQ-Y16T: 16-point transistor output expansion module, 24VDC / 0.5A per point
• NQ-Y32T: 32-point transistor output expansion module, high-density DO expansion

Analog Modules

• NQ-A4U: 4-channel analog input module, 0–10V / 4–20mA selectable per channel
• NQ-A2V: 2-channel analog output module, 0–10V voltage output, 12-bit resolution
• NQ-A4I: 4-channel analog input module, current input 4–20mA, for process instrumentation

Communication Adapters

• NQ-CL1: RS-232C communication adapter, point-to-point serial link for HMI/SCADA
• NQ-CL2: RS-485 multi-drop communication adapter, Modbus RTU master/slave
• NQ-ET1: Ethernet TCP/IP communication module, Modbus TCP and FINS protocol support