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ABB AO815 3BSE052605R1 Analog Output Module

Configured for 4-20 mA analog signal generation with HART communication, the ABB AO815 3BSE052605R1 (AO815 Analog Output Module) provides eight output channels for direct process signal transmission. The module uses 12 bit resolution, groupwise ground isolation, and a 10 ms update cycle.

Hardware Specifications

Parameter	Specification
Model	AO815 3BSE052605R1
Spare Model	3BSE052605R1
Brand	ABB
Product Type	Analog Output Module
Channels	8
Output Signal	4-20 mA
Communication	HART
Resolution	12 bit
Isolation	Groupwise isolated from ground
Under/Over Range	-12.5% / +15%
Output Load	Max 750 ohm
Temperature Drift	Max 50 ppm/deg C
Input Filter	23 ms (0-90%), max 4 mA / 12.5 ms
Update Cycle Time	10 ms
Rated Insulation Voltage	50 V
Power Dissipation	3.5 W typ.
Operating Temp	0 to +55 deg C; approvals: +5 to +55 deg C
Storage Temp	-40 to +70 deg C
Weight	0.3 kg
Dimensions	5.1 x 15.2 x 15.2 cm shipping size
Origin	Sweden

ABB S800 I/O Signal and Backplane Characteristics

The AO815 belongs to the ABB S800 I/O platform and provides eight 4-20 mA analog output channels with HART support. Each channel generates a controlled current signal for connected process devices.

The 12 bit resolution defines the digital-to-analog conversion granularity. Meanwhile, the specified 10 ms update cycle determines the stated output refresh interval.

The module provides groupwise isolation from ground and has a rated insulation voltage of 50 V. Therefore, installation should maintain the specified separation between field wiring and other circuit groups.

The output stage supports loads up to 750 ohm. Furthermore, the under-range and over-range limits are specified as -12.5% and +15%, respectively.

For temperature-dependent accuracy, the specified maximum drift is 50 ppm/deg C. The input filter provides a 23 ms response from 0% to 90%, with the stated 4 mA response value limited to 12.5 ms.

Frequently Asked Questions

Q: How many analog output channels does the AO815 provide?
A: The AO815 provides eight analog output channels, each supporting the specified 4-20 mA signal range with HART communication.

Q: What is the maximum permitted output load?
A: The specified maximum output load is 750 ohm.

Q: Does the AO815 provide electrical isolation?
A: Yes. The module specifies groupwise isolation from ground and a rated insulation voltage of 50 V.

Field Installation Guidelines

• Install the module in the designated ABB S800 I/O system position and verify mechanical engagement before energizing the assembly.
• Confirm that the field terminal arrangement matches the AO815 channel assignment before connecting the 4-20 mA circuits.
• Route analog signal wiring separately from high-voltage power conductors and high-current switching circuits.
• Use appropriate shielded instrumentation cable where the installation requires protection against electromagnetic interference.
• Terminate cable shields according to the site's approved grounding scheme and avoid unintended ground loops.
• Verify the connected load remains within the specified maximum 750 ohm output load.
• Check field polarity and loop continuity before commissioning each output channel.
• Confirm the operating temperature remains within 0 to +55 deg C, while approved installations must observe the stated +5 to +55 deg C approval range.
• Inspect the module and terminal connections for secure mechanical seating before applying system power.
• During commissioning, verify each 4-20 mA output against the configured engineering value and confirm HART communication where applicable.

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