AI 16-channel 4-20 mA HART card specifications

Installation notes

Specifications

Table: AI 16-channel 4-20 mA HART card specifications
Item Specification
Number of channels 16
Nominal signal range (span) 4 to 20 mA
Full signal range 2 to 22 mA
Accuracy over temperature range 0.2% of span
Repeatability 0.05% of span
Resolution 16 bits
Rolloff frequency -3 dB at 2.7 Hz, -20.5 dB at one-half the sampling frequency
Calibration None required
2-wire transmitter power 13.5 V minimum at 20 mA (current limited to 29 mA maximum)
LocalBus current (12 VDC nominal) 85 mA typical, 150 mA maximum
Field circuit power (per card) 600 mA maximum at 24 VDC (±10%)
Field circuit per channel 30 mA maximum
Isolation Field to system isolation is factory tested to 1500 VDC. No channel to channel isolation.
Communications support
  • HART pass-through request/response
  • HART variable report
  • Field device status report
Heat dissipation 7.7 W
HART scan time 600-800 ms (typical) per enabled channel
Mounting Assigned slot of I/O carrier

Wiring diagrams

Figure: AI 16-channel 4-20 mA HART card wiring diagram