HART Analog Output channel specifications

Table: HART Analog Output channel specifications
Item Specification
Number of channels Four
Channel to channel isolation None
Nominal signal range (span) 4 to 20 mA
Full signal range 1 to 22 mA
Voltage to load 15 V minimum @ 20 mA
Load resistance 750 Ω maximum
Open circuit detection threshold 0.75 mA 0.25 mA
Channel readback error threshold 5% of span
Resolution 14 bits
Accuracy over temperature range
  • 0 to 60°C: 0.25% of span
  • -20 to 70°C: 0.3% of span
Accuracy over EMC Conditions 2.5% of span
Calibration Factory software calibration. No further calibration required.
Communications support
  • HART pass-through request/response
  • HART variable report
  • Field device status report

Refer to document 12P3292, DeltaV Type KJ7000 Series Zone 1 I/O System Installation Instructions for the AO channels' entity parameters. This document can be found on the DeltaV Documentation Library DVD. This document is in Portable Document Format (.PDF). A letter (A-Z) is appended to the filename and is incremented for each release of the document.

Wiring diagram and terminations

Figure: Wiring diagram and terminations for HART Analog Output channels