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1746-NO4I

Allen-Bradley 1746-NO4I SLC 500 Analog Output Module 4 Channel

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  • Manufacturer: Allen-Bradley

  • Product No.: 1746-NO4I

  • Product Type: Analog Output Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 450g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Allen-Bradley 1746-NO4I SLC 500 Analog Output Module

Allen-Bradley 1746-NO4I is a 4-channel analog current output module for SLC 500 systems. Provides 0 to +20 mA output range with 14-bit resolution. Features 512 microsecond update time and 2.5 ms step response. Weight: 0.45 kg (1.00 lbs).

Technical Specifications

Parameter Specification
Manufacturer Allen-Bradley / Rockwell Automation
Model 1746-NO4I
Series SLC 500
Module Type Analog Output Module
Number of Outputs 4
Output Current Range 0 to +20 mA
Full Scale Output 21 mA
Overrange Capability 5% (0 to +21 mA - 1 LSB)
Current Output Coding 0 to +32764
Resolution 14 bits
Update Time 512 microseconds
Step Response 2.5 milliseconds
Backplane Current (5V) 55 mA
Backplane Current (24V) 195 mA
Load Range 0 to 500 ohms
Max Load Reactance 100 µH
Accuracy Drift ±70 ppm/°C full scale
Operating Temperature 0°C to +60°C
Storage Temperature -40°C to +85°C
Humidity 5% to 95% non-condensing
Weight 0.45 kg (1.00 lbs)

Key Features

  • 4 analog current output channels for SLC 500 systems
  • 0 to +20 mA output range with 14-bit resolution
  • 512 microsecond update time for all channels in parallel
  • 2.5 millisecond step response at 95%
  • Embedded selector switch for internal or external power supply
  • Removable terminal block for simplified wiring
  • LED status indicator for module monitoring
  • Factory-calibrated for accurate performance

Installation Guidelines (Field Engineer Notes)

Power Selection: Select internal power supply (backplane) or external 24V DC ±10% at 195 mA max via embedded selector switch. Some applications require 21.6-26.4V DC when backplane power is insufficient.

Wiring: Use shielded cable such as Belden 8761 or equivalent. Keep cable lengths as short as possible. Ground shield at the module end only.

Load Connection: Connect loads with 0-500 ohm impedance. Maximum load reactance is 100 µH. Verify load compatibility before connection.

Isolation: Backplane isolation is 500V DC. Do not exceed this rating.

FAQs

Q1. What is the output current range of the 1746-NO4I?
A1. The module provides 0 to +20 mA output range with full-scale output of 21 mA and 14-bit resolution.

Q2. Can the module use external power?
A2. Yes. An embedded selector switch allows selection of internal backplane power or external 24V DC ±10% at 195 mA max.

Q3. What is the maximum load impedance?
A3. The module supports load range of 0 to 500 ohms with maximum load reactance of 100 µH.

Product Resources

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🏷️ Tags: Analog Output Module

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