FLEX I/O Isolated Output HART Analog Module 21
Publication 1794-IN120D-EN-P - September 2015
Terminal base screw torque Determined by installed terminal base
Dimensions, approx. (H x W x D
with module installed in base
94 x 94 x 66 mm (3.7 x 3.7 x 2.6 in.)
Indicators (field side) 1 red/green power/status indicator
External power supply voltage, nom 24V DC
External power voltage range 19.2...31.2V DC (includes 5% AC ripple)
External power supply current 450 mA @ 24V DC
Ambient temperature 0 °C ≤ T
amb
≤ 55 °C (32 ≤ T
amb
≤131 °F)
North American temperature code T4
IEC temperature code T4
Keyswitch position 4
Enclosure type rating None (open-style)
Wire size Determined by installed terminal base
Wire type Shielded
Wiring category
(2)
2 - on signal ports
3 - on power ports
Compatibility HART 5
Device supported 2, 3, 4 wires
(1)
Includes offset, gain, non-linearity and repeatability error terms.
(2)
Use this conductor category information for planning conductor routing as described in Industrial Automation Wiring
and Grounding Guidelines, publication 1770-4.1. The phase conductor is 0.34…2.5 mm². The ground conductor must be
equal to or greater than the phase conductor.
(3)
Engineering Units apply to HART data only.
Specifications – FLEX I/O Isolated Output Analog Module – 1794-OF8IH
Attribute Value
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