The ABB DSDO 131, also cataloged as the DSDO 131 Digital Output Unit, operates as a dedicated hardware component for high-capacity discrete relay execution tasks within ABB industrial control system networks.
Hardware Specifications
Parameter
Specification
Model
DSDO 131
Brand
ABB
Origin
Sweden
Product Net Weight
0.7 kg
Gross Shipping Weight
2.0 kg (Including protective packaging)
Operating Temp
0 to +55 deg C (Standard industrial baseline)
Power Consumption
Subrack backplane-dependent
Product Type
Digital Output Boards (Relay Matrix)
Number of Channels
16
Voltage Operating Range
0 - 240 VAC / VDC
Max Contact Load DC
48 W
Max Contact Load AC
720 VA
Backplane Bus Communication Velocity and Network Determinism
The DSDO 131 utilizes an array of 16 robust relay output channels to switch diverse field loads up to 240 V AC/DC. The internal coil-driving circuitry isolates the master processing bus lines from active inductive contact arcs, preventing voltage spikes from degrading the backplane bus communication velocity. Digital switching commands are captured via synchronized data registers, ensuring total firmware flash compatibility with adjacent hardware blocks and maintaining strict network determinism without expanding the controller loop execution window.
