Specifications

• Outputs:
  • 6 individually isolated output channels
• Output Range:
  • 0…21 mA
• Resolution:
  • 13 bits across 21 mA (2.7 μA)

Current Draw

• @ 5.1V:
  • 250 mA for 0…550 Ω loads terminated on OUTs and RTNs
  • 250 mA for 551…1000 Ω loads terminated on OUTs and ALTs
• @ 24V:
  • 225 mA for 0…550 Ω loads terminated on OUTs and RTNs
  • 300 mA for 551…1000 Ω loads terminated on OUTs and ALTs

Power Specifications

• Total Backplane Power:
  • 6.7 W for 0…550 Ω range
  • 8.5 W for 551…1000 Ω range
• Power Dissipation (Max):
  • 5.5 W for 0…550 Ω loads
  • 6.1 W for 551…1000 Ω loads
• Thermal Dissipation:
  • 18.76 BTU/hr for 0…550 Ω loads
  • 20.80 BTU/hr for 551…1000 Ω loads

Protection & Capabilities

• Open Circuit Detection: None
• Overvoltage Protection: 24V DC
• Short Circuit Protection: Electronically current limited to 21 mA or less
• Drive Capability: 0…1000 Ω
• Separate Field Terminations: For 0…550 Ω and 551…1000 Ω

Performance

• Settling Time:
  • < 2 ms to 95% of final value with resistive loads
• Calibrated Accuracy @ 25 °C (77 °F):
  • Better than 0.1% of range from 4…21 mA
• Calibration Interval:
  • 6 months typical
• Offset Drift:
  • 1 μA/°C typical
• Gain Drift with Temperature (Nominal):
  • 60 ppm/°C
• Gain Drift with Temperature (Max):
  • 100 ppm/°C
• Module Error:
  • 0.6% of range
• Module Scan Time (Max):
  • 25 ms floating point
  • 10 ms integer

Data and Conversion

• Data Format:
  • Integer mode (left justified, 2s complement)
  • IEEE 32-bit floating point
• Module Conversion Method:
  • R-Ladder DAC, monotonicity with no missing codes

Electrical Isolation

• Isolation Voltage:
  • 250V (continuous), basic insulation type, output channels-to-backplane, and output channel-to-channel
• Routine Test Voltage:
  • 1350V AC for 2 seconds

Mechanical and Configuration

• Module Keying:
  • Electronic, software configurable
• Removable Terminal Block (RTB):
  • 1756-TBNH, 1756-TBSH
• RTB Keying:
  • User-defined mechanical
• Slot Width:
  • 1
• Wire Category:
  • 2

Temperature and Enclosure

• North American Temperature Code:
  • T4A
• IEC Temperature Code:
  • T4
• Enclosure Type:
  • None (open-style)