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SKU:DO821
DO821 ABB - Relay Output Module | 8-Channel 230V
Manufacturer: ABB
Product No.: DO821
Product Type: Digital Output Module
Product Origin: SE
Payment:T/T, Western Union
Weight: 230g
Shipping port: Xiamen
Warranty: 12 months
Ulashish
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Tavsif
ABB DO821 Relay Output Module for S800 I/O Systems
The ABB DO821 provides reliable relay output control for industrial automation applications. This 8-channel module handles high voltage loads up to 250V AC/DC with robust 3A contacts. It offers individual channel isolation and comprehensive diagnostic capabilities.
Key Technical Specifications
- Brand: ABB
- Model: DO821
- Output Channels: 8 relay channels
- Voltage Rating: 5-250V AC/DC range
- Current Capacity: 3A per channel continuous
- Contact Type: Normally Closed (NC) configuration
- Isolation: Individual channel-to-channel isolation
- Power Dissipation: 2.9W typical operation
Electrical Characteristics
- Output Type: Relay contacts with NC operation
- Maximum Voltage: 250V AC/DC working voltage
- Dielectric Strength: 2000V AC test voltage
- Current Consumption: 60mA at +5V ModuleBus
- Relay Power: 140mA at +24V ModuleBus
- Cable Length: 600 meters maximum field wiring
Protection and Safety Features
- Individual channel isolation for safety
- EMC protection components on all outputs
- Optical isolation barriers for noise immunity
- Relay power supply voltage monitoring
- Overvoltage Category: III according to standards
- IP20 protection against dust and contact
Environmental Specifications
- Operating Temperature: 0°C to +55°C range
- Storage Temperature: -40°C to +70°C limits
- Humidity Range: 5% to 95% non-condensing
- Pollution Degree: Level 2 classification
- Corrosion Protection: ISA-S71.04 G3 rating
- Vibration Compliance: IEC 61131-2 standard
Diagnostics and Monitoring
- 8 individual channel status LEDs
- Module indicators: Fault, Run, Warning, OSP
- Relay supply voltage supervision
- ModuleBus communication for diagnostics
- Configurable error detection parameters
- Real-time status monitoring capability
Installation and Compatibility
- Compatible with S800 I/O mounting units
- Works with TU811, TU813, TU831 MTUs
- Keying code CA for proper installation
- Compact dimensions: 45mm W × 119mm H × 102mm D
- Weight: 0.23 kg for easy handling
- Standard rail mounting design
Packaging and Shipping
- Includes one ABB DO821 module
- All necessary installation components
- Fast worldwide shipping via FedEx, UPS, DHL
- Secure industrial packaging protection
Frequently Asked Questions
-
What does Normally Closed (NC) mean?
NC contacts are closed when the relay is not energized and open when activated for fail-safe operation. -
How is channel isolation beneficial?
Individual isolation prevents cross-channel interference and allows mixed voltage applications on different channels. -
What monitoring capabilities are available?
The module provides relay power monitoring and status indicators with ModuleBus communication for system integration.
Qo'shimcha Texnik Tavsiflar
Skalyar (V/f)
Vektor
AC quvvatli
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