The ABB DO880, also cataloged as the DO880 Digital Output Module, operates as a dedicated hardware component for high-integrity switching tasks within S800 I/O system networks.
Hardware Specifications
Parameter
Specification
Model
DO880
Brand
ABB
Article Number
3BSE028602R1
Origin
Sweden
Mechanics
S800
Weight
0.20 kg (0.44 lbs.)
Dimensions
45 mm x 119 mm x 102 mm (111 mm including connector)
Signal Specification
24 VDC (19.2 - 32 VDC)
Number of Channels
16
Signal Type
Current sourcing, current limiting
Current Rating
0.5 A per channel
Maximum Field Cable Length
600 meters (656 yards)
Redundancy
Supported
High Integrity
Yes
Isolation
Groupwise isolated from ground
Rated Insulation Voltage
50 V
Dielectric Test Voltage
500 VAC
Power Dissipation
5.6 W (0.5 A x 16 channels)
Current Consumption (+5 V Modulebus)
45 mA
Current Consumption (+24 V Modulebus)
Max. 50 mA
Current Consumption (+24 V External)
10 mA
Backplane Bus Communication Velocity and Network Determinism
The DO880 transfers 16 channels of high-integrity digital output data across the S800 Modulebus interface, maintaining synchronous alignment with master controller execution scans. The internal logic handles groupwise isolation and electronic short-circuit protection without introducing feedback jitter or decreasing the backplane bus communication velocity. This layout enables steady I/O density scaling and provides firmware flash compatibility across standard redundant configurations, ensuring deterministic fail-safe state execution during critical process events.
