ABB AO820 3BSE008546R1 Analog Output Module in stock

Product Details

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Frequently Asked Questions (FAQ)

Q1: Which ABB control systems is the AO820 compatible with?

The AO820 is part of the S800 I/O system and is designed for ABB System 800xA DCS and AC 800M controllers .

Q2: Does the AO820 support HART communication?

No. The AO820 does not support HART pass-through communication . For HART applications, ABB offers the AO815 (non-redundant) or AO845A (redundant) series modules.

Q3: What is the key feature of the AO820 compared to other analog output modules?

The AO820's key differentiator is individually galvanically isolated channels (channel-to-channel and to circuit common) . Most other S800 analog output modules like AO810V2 and AO815 use groupwise isolation, meaning all channels share a common reference.

Q4: What is the OSP (Output Set as Predetermined) function?

OSP is a safety function that sets outputs to a predetermined state upon detection of a communication error or module fault . The timer can be configured for 256, 512, or 1024 ms delay before activation .

Q5: What is the difference between AO820 and AO810V2?

The AO820 has 4 individually isolated channels with both current and voltage output capability, while the AO810V2 has 8 channels with groupwise isolation and supports only current output (0/4...20 mA). AO820 is suitable for applications requiring high channel-to-channel isolation; AO810V2 is preferred for higher channel density.