NFAI841-S50

Overview

NFAI841-S50 is a Yokogawa analog I/O module with 8 input/output channels, 4 to 20 mA signals, and non-isolated design.

Suffix Codes

• Standard type: -S

• No explosion protection: 5

• Basic type: 0

I/O Channels and Signals

• Number of I/O channels: 8-channel input / 8-channel output, non-isolated

• Input signal: 4 to 20 mA

• Output signal: 4 to 20 mA

Electrical Characteristics

• Allowable input current/voltage: 25 mA

• Overcurrent protection: Provided

• Input resistance (Power ON): 250 Ω

• Input resistance (Power OFF): ≥ 500 kΩ

• Accuracy: ±0.1% of full scale

Performance

• Data refresh cycle: 10 ms

• Input step response time: 100 ms

• Output step response time: 40 ms

Power and Communication

• Transmitter power supply: 22.8 to 26.4 V (output current limit: 27 mA)

• 2-wire / 4-wire transmitter setting: Per channel by setting pin

• Temperature drift: Max. ±0.01 %/°C

• Maximum current consumption: 310 mA (5 V DC), 500 mA (24 V DC)

• HART communication: Available

Physical Details

• Weight: 0.3 kg

• External connection: Pressure clamp terminal, MIL connector cable

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