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ABB DO815 Digital Output Module

The ABB DO815 3BSE013258R1, also cataloged as the DO815 Digital Output Module, provides 24 VDC high side switching execution within the ABB S800 I/O system. The module controls eight digital output channels with short circuit protection, overload protection, and channel status monitoring.

Hardware Specifications

Parameter	Specification
Model	DO815 3BSE013258R1
Brand	ABB
Product Type	Digital Output Module
Origin	Sweden
Weight	0.2 kg
Dimensions	45 mm W x 102 mm D x 119 mm H
Operating Temp	0 to +55 deg C
Power Consumption	Typ. 4 W
Signal Specification	24 VDC (10 to 32 VDC), 2 A
Number of Channels	8
Signal Type	High side driver, current limiting
Output Voltage Range	10 to 30 V
Maximum Continuous Output Current	2 A at 24 V
HART Support	No
SOE Support	No
Redundancy	No
High Integrity	No
Intrinsic Safety	No
Mechanics	S800
Isolation	Groupwise isolated from ground
Output Load	< 0.25 ohm
Current Limiting	Short circuit proof current limited output
Maximum Field Cable Length	600 m
Rated Insulation Voltage	50 V
Dielectric Test Voltage	500 VAC
ModuleBus +5 V Current Consumption	Typ. 120 mA, Max. 150 mA
ModuleBus +24 V Current Consumption	0
External +24 V Current Consumption	0
Front LED Indicators	Fault, Run, Warning, OSP, Channel 1-8 Status, Channel 1-8 Fault
Supervision Functions	Short circuit, overload, undervoltage, open load
MTU Compatibility	TU810, TU812, TU814, TU830
Keying Code	AA
Protection Class	IP20 according to IEC 60529
Relative Humidity	5 to 95 %, non-condensing
Storage Temperature	-40 to +70 deg C
Pollution Degree	Degree 2, IEC 60664-1
EMC Compliance	EN 61000-6-4, EN 61000-6-2
Electrical Safety	EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201

ABB S800 I/O High Side Driver and Protection Characteristics

The DO815 uses eight individually controlled high side output drivers for 24 VDC field devices. Each channel integrates optical isolation, output status indication, EMC protection, and inductive load suppression components.

Furthermore, the module divides the outputs into two isolated groups with four channels per group. The integrated protection circuits detect short circuits, overload conditions, undervoltage states, and active signal open load conditions.

The DO815 follows ABB S800 I/O backplane communication architecture and supports I/O density scaling through ModuleBus connectivity. The module provides direct digital signal execution between the control system and connected field actuators.

Frequently Asked Questions

Q: What type of output driver does the ABB DO815 use?
A: The DO815 uses a high side driver with current limiting. Each output channel includes short circuit and overload protection.

Q: Does the DO815 support redundant operation or safety integrity functions?
A: No. The DO815 does not provide redundancy or high integrity functions. It operates as a standard digital output module within the S800 I/O platform.

Q: How are output channels electrically isolated?
A: The eight outputs are arranged into two isolated groups. Each group contains four output channels and is isolated from ground.

Field Installation Guidelines

Install the DO815 module in an ABB S800 I/O configuration using compatible Module Termination Units such as TU810, TU812, TU814, or TU830.

Connect field wiring according to the approved ABB installation documentation. Keep output signal wiring separated from high voltage power conductors to reduce electromagnetic interference.

Verify the ModuleBus connection before system commissioning. Confirm that field devices match the 24 VDC output range and maximum current specification.

Ensure protective grounding, enclosure requirements, and environmental conditions comply with the applicable IEC and installation standards.

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