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Home ⊙ NEWS ⊙ ABB RAO02 Redundant Analog Output module
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ABB RAO02 Redundant Analog Output module

From:ABB | author:Mr.Chen | Time :2025-07-21 | 3 view: | Share:

The RAO02 Redundant Analog Output module processes up to 16 high-level,

group isolated, analog output field signals.

Each channel is independently configurable for either 4 to 20 mA or 1 to +5 VDC ranges.

FC 221 (I/O Device Definition) sets AO module operating parameters and

each output channel is configured using FC 223 (Analog Output CH) to

set indivdual output channel parameters such as engineering units,

High/Low Alarm limits, default value in event of loss of communication with controller, etc.

D/A resolution of each channel is 12 bits.

The RAO02 module has one D/A converter for each output channel.

In current mode, the RAO02 module supports HART v5.4 instruments and

provides short circuit protection by limiting current to a maximum of 26 mA.

The RAO02 module will also detect an open circuit in less than 5 seconds.

Features and benefits

• 16 independently configurable channels supporting:

• 4 to 20 mADC or 1 to +5 VDC

• Up to 24 HART v5.4 secondary variables Total

• Max 4 sec vars per analog input CH

• Sec HART variables available to control logic

• 12 to 16-Bit (with polarity) A/D resolutionV

• A/D update of all 16 Channels in 100 msecs

• Accuracy is ±0.1 % of Full Scale Range where FSR = 25 mA or 6.25 VDC



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