Overview
Configured for relay-based discrete signal switching in the ABB S800 I/O system, the ABB DO828 (3BSE069055R2) (DO828 Digital Output Module) provides 16 individually isolated normally open relay outputs for external circuits up to 125 VDC or 250 VAC.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | DO828 (3BSE069055R2) |
| Compatible Model | 3BSE069055R1 |
| Brand | ABB |
| Series | S800 I/O |
| Product Type | Digital Output Module, Relay |
| Number of Channels | 16 |
| Output Type | Relay, Normally Open (NO) |
| Signal Voltage | 5 to 125 VDC / 5 to 250 VAC |
| Maximum Continuous Output Current | 2 A per channel |
| Channel Isolation | Individually isolated |
| Rated Insulation Voltage | 250 V |
| Dielectric Test Voltage | 2000 VAC |
| Power Dissipation | Typical 3.5 W |
| +5 V ModuleBus Consumption | 45 mA |
| +24 V ModuleBus Consumption | 80 mA |
| +24 V External Consumption | 0 mA |
| Field Cable Length | Maximum 600 m |
| Dimensions (H x W x D) | Approx. 119 x 45 x 102 mm |
| Depth Including Connector | Approx. 111 mm |
| Weight | Approx. 0.18 to 0.31 kg |
| Operating Temperature | Not specified in supplied data |
| Origin | Not specified in supplied data |
ABB S800 I/O Output and Isolation Characteristics
The DO828 uses relay output stages to switch external discrete circuits. Each channel provides individual electrical isolation from the other channels and from the circuit common. Optical isolation, relay drivers, status indication, and EMC protection components form the channel interface.
The module accepts switching voltages from 5 to 125 VDC or 5 to 250 VAC. Each output channel supports a maximum continuous current of 2 A. Therefore, the connected load must remain within the specified voltage and current limits.
The DO828 also monitors the relay power converter supplied from the ModuleBus. Consequently, the module can report relay supply failures through the S800 I/O diagnostic system.
For industrial control architectures, the S800 I/O platform uses ModuleBus communication between I/O modules and the associated controller interface. The DO828 therefore provides relay-based field output switching while the I/O system handles module status and diagnostic reporting.
Frequently Asked Questions (FAQ)
Q: How many relay outputs does the ABB DO828 provide?
A: The DO828 provides 16 normally open relay output channels. Each channel operates as an individually isolated output.
Q: What output voltage and current can the DO828 switch?
A: The module supports 5 to 125 VDC or 5 to 250 VAC, with a maximum continuous output current of 2 A per channel.
Q: What diagnostics does the DO828 provide?
A: The module provides fault, run, output set point, and individual channel status indications. It also reports module and channel errors through the ModuleBus.
Field Installation Guidelines
- Install the DO828 on the specified S800 I/O mounting arrangement and verify the connector is fully seated before energizing the module.
- Route relay output wiring separately from low-level analog signal wiring where practical to reduce coupling from switched loads.
- Select field wiring and protective devices according to the connected load voltage and current.
- Verify that each connected circuit remains within the DO828 output voltage and 2 A continuous current limits.
- Maintain appropriate electrical separation between AC and DC field circuits according to the installation standard used at the site.
- Connect cable shields according to the plant grounding scheme. Avoid creating unintended shield-current paths between different grounding points.
- Check the ModuleBus supply and relay supply supervision before placing the output channels into service.
- Confirm each channel’s LED status against the commanded output state during commissioning.
- Keep field cable routing within the specified maximum cable length of 600 m.
ABB Top Products
Customers Also Viewed
Contact: Manski Wong +86 18030205725 manski@cambia.cn
Reviews
There are no reviews yet.