Manufacture	ABB
Item No	DO821
Article number	3BSE013250R1
Series	800XA Control Systems
Origin	Sweden
Dimension	46*122*107(mm)
Weight	0.2kg
Customs Tariff Number	85389091
Type	Digital Outputt Module

 ABB DO821 3BSE013250R1 Digital Output Module Relay 8 CH 24-230V DC AC PLC Spare Parts The DO821 is an 8 channel 230 V a.c./d.c. relay (NC) output module for the S800 I/O. The maximum output voltage is 250 V a.c. and the maximum continuous output current is 3 A. All outputs are individually isolated. Each output channel consists of optical isolation barrier, output state indication LED, relay driver, relay and EMC protection components. The relay supply voltage supervision, derived from the 24 V distributed on the ModuleBus, gives an error signal if the voltage disappears, and the Warning LED turns on. The error signal can be read via the ModuleBus. This supervision can be enabled/disabled with a parameter.Detailed data: Isolation Individual isolation between channels and circuit common Current limitation Current can be limited by MTU Maximum field cable length 600 m (656 yd) Rated insulation voltage 250 V Dielectric test voltage 2000 V AC Power dissipation Typical 2.9 W Current consumption +5 V module bus 60 mA Current consumption +24 V module bus 140 mA Current consumption +24 V external 0 Environmental and Certifications: Electrical Safety EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201 Hazardous Locations - Maritime Approvals ABS, BV, DNV, LR Operating Temperature 0 to +55 °C (+32 to +131 °F), certified for +5 to +55 °C Storage Temperature -40 to +70 °C (-40 to +158 °F) Pollution Degree 2, IEC 60664-1 Corrosion Protection ISA-S71.04: G3 Relative Humidity 5 to 95 %, non-condensing Maximum Ambient Temperature 55 °C (131 °F), 40 °C (104 °F) for Compact MTU vertical mountingFrequently asked questions about the product are as follows: -What is the ABB DO821 module used for? The DO821 is a digital output module used in automation systems to control external devices. It provides a way for the control system to send on/off signals to external devices. -How many outputs does the ABB DO821 module have?  The DO821 module is typically configured with 8 digital outputs. These outputs can drive sink or source type devices, meaning they can pull current to a ground sink or provide current to a device. -How is the DO821 module installed? It is generally installed in the rack or chassis of the ABB control system. The module is designed to easily snap into place and wires are connected to external devices via terminal blocks on the module.