DO820
Based on the search results, here’s the information for the ABB DO820 module:
Product Name: DO820 Digital Output Relay Module
Product Description: The DO820 is an 8-channel digital output module with relay outputs, part of ABB’s S800 I/O (or Advant 800xA S800 I/O) system. It provides reliable control capabilities by switching external loads using normally open (NO) relay contacts. All channels are individually galvanically isolated, ensuring electrical separation between the control system and the field devices. Each channel has an LED indicator to show the output status. The module also features Overload Supervision Protection (OSP) which can set outputs to a predetermined state upon error detection. A relay supply voltage supervision monitors the 24V ModuleBus and provides an error signal if the voltage is lost. This supervision can be enabled or disabled via a parameter.
Product Parameters (Typical):
- Number of Channels: 8
- Output Type: Relay, Normally Open (NO) contacts
- Maximum Output Voltage: 250 V AC/DC
- Maximum Continuous Output Current: 3 A per channel
- Signal Specification: 24-230 V AC/DC (some sources mention 5-250 V AC/DC)
- Isolation: Individually isolated, channel-to-channel and to circuit common
Current Limiting: Can be current limited by the MTU (Module Termination Unit)
- Power Dissipation: Typ. 2.9 W
- Current Consumption +5 V ModuleBus: 60 mA
- Current Consumption +24 V ModuleBus: 140 mA
- Current Consumption +24 V external: 0 mA
- Maximum Field Cable Length: 600 meters (656 yards)
- Rated Insulation Voltage: 250 V
- Dielectric Test Voltage: 2000 V AC
Specifications (Typical):
- ABB Part Number: 3BSE008514R1
- Type: Digital Output
- Signal Type: Relay (NO)
- HART: No
