NDSI02

Overview

The NDSI02 from ABB Bailey is a Network 90 digital slave input module for interfacing passive contact inputs with logic controllers.

Electrical Ratings

• Typical input current: 4.5 mA @ 24 VDC, 5.0 mA @ 125 VDC, 7.0 mA @ 120 VAC @ 60 Hz

• DC I/O voltages: ±5 VDC (±5%), 24 VDC (±10%), 125 VDC (±10%)

• AC I/O voltage: 120 VAC (±10%)

• Turn-on voltage (min): 21.4 VDC, 95.0 VDC, 85.0 VAC

• Turn-off voltage (max): 12 VDC, 60 VDC, 42 VAC

• Max input current at min turn-on: 3 mA @ 21.4 VDC, 3 mA @ 95.0 VDC, 5 mA @ 85 VAC

• Off leakage current (max): 10 µA @ ≤12 VDC, 10 µA @ ≤60 VDC, 1.6 mA @ ≤42 VAC

Isolation and Power

• Isolation: 300 V RMS between input and logic, input-to-input

• Logic current consumption: 55 mA @ +5 VDC, max 79 mA

Performance

• Response time: DC "Fast" 1.5 ms, DC "Slow" 18 ms

• Communication: Passive contact inputs read by Logic Master Module, Multi-Function Controller, or PC-90 via Expander Bus

Installation

• Mounting: One slot in standard NETWORK 90 Module Mounting Unit

Environmental Limits

• Ambient temperature: 0–70°C (32–158°F)

• Relative humidity: 0–95% up to 55°C, 0–45% at 70°C (non-condensing)

• Atmospheric pressure: Sea level to 3 km (1.86 miles)

• Air quality: Non-corrosive

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