900B01-0301

Description

The Honeywell 900B01-0301 is a 4-channel analog output module designed for precise current control in industrial automation systems, supporting 0 to 20 mA output range with advanced diagnostics and calibration features.

Output Characteristics

• Channels per Module: 4 (isolated)

• Current Range: Selectable 0 to 21.8 mA

• Load Resistance: Up to 750 ohms

• Minimum Current Sensing: > 3.5 mA per output

• D/A Resolution: 12 bits

Isolation & Accuracy

• Channel-to-Channel Isolation: 500 VDC

• Logic Isolation: 600 VDC

• Accuracy: ±0.1% full scale at reference conditions

Calibration & Diagnostics

• Calibration Data: Stored in non-volatile memory

• Redundant Factory Calibration: Automatic rejection of invalid versions

• Diagnostics:

  • Factory calibration monitoring

  • Configuration validation

  • +24 VDC power supply check

• Output Verification: Confirms current flow to controller

System Integration

• Modules per Rack:

  • 10 standard

  • Up to 12 with ambient temperature de-rating

• Fail Safe Configuration:

  • Hold Last Value

  • Failsafe Value

Control Features

• User-Specified Scan Rate: Supported via slew rate function block

• Slew Rate Function:

  • Controls maximum output change per execution cycle

  • Converts full OFF (0% = 0 or 4 mA) to full ON (100% = 20 mA)

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