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DA-820 Series

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x86 Computers

Intel® 3rd Gen Core™ CPU, IEC-61850, 3U rackmount computer with PRP/HSR card support

Product Feature

  • IEC 61850-3, IEEE 1613, and IEC 60255 compliant for power substation automation systems
  • Intel® Celeron™/Intel® Core™ i3 and i7 CPU and QM77 chipset
  • 1 CFast slot for the OS and 4 SATA III slots for storage expansion (supports Intel® RST RAID 0/1/5/10)
  • 6 USB 2.0 ports for high-speed peripherals
  • 3 PCIe x1 slots and 2 PCI slots for expansion modules
  • 1 PCIe x16 slot for an additional video card
  • Highly reliable design, supporting dual power and PRP/HSR technology (with PRP/HSR expansion module)
  • Onboard TPM module for enhanced cybersecurity


The DA-820 Series is based on the Intel® Celeron™/Intel® Core™ i3 or i7 CPU, and QM77 chipset, which supports the standard x86 OS and comes with 2 VGA ports, 6 USB ports, 4 Gigabit LAN ports, and 2 3-in-1 RS-232/422/485 serial ports. The DA-820 is equipped with a 4 SATA disk interface and supports RAID 0/1/5/10 functionality. The DA-820 is specifically designed for substation applications that require precise time synchronization and adherence to the IEC 61850-3 standards. The flexible design makes the DA-820 suitable for local SCADA, environmental monitoring, video surveillance, protocol conversion, and PRP/HSR redundancy applications. In addition, the cybersecurity functions make the DA-820 an ideal solution for secure network communication applications.

The DA-820 complies with the IEC 60255 standard to enable the protection of electrical relays in a smart substation. IEC 60255 is one of the most widely used standards for testing relays and protection equipment, and compliance ensures that the DA-820 will work reliably and seamlessly with IEDs (intelligent electronic devices) as a part of a robust substation automation system.

The housing is a standard 3U, 19-inch wide, rack-mountable rugged enclosure. This robust, rack-mountable design provides the hardened protection needed for industrial environment applications.


Smart Recovery Function

The DA-820’s Smart Recovery function makes it easy to troubleshoot system software errors on computers to minimize downtime. Engineers who are experts in a particular vertical market may not have enough computer domain knowledge to know how to fix operating system problems. Moxa Smart Recovery™ is an automated BIOS-level recovery system tool that allows engineers to automatically trigger OS recovery to minimize downtime.


Proactive Monitoring Function

Moxa Proactive Monitoring is a small-footprint, resource-friendly, easy-to-use utility that allows users to track a number of system parameters. Users can view the current parameter values for these key parts by simply clicking on the icons corresponding to the parameters in the user interface. User-defined key part indicators (KPIs) are used to monitor the computer’s key parts. Visible and/or audio alerts are triggered automatically via relay and SNMP traps when these KPIs exceed their preset threshold values, making it extremely convenient for operators to avoid system downtime by setting up predictive maintenance tasks well in advance.


CPUIntel® Celeron® Processor 1047UE (2M cache, 1.40 GHz)
Intel® Core™ i3-3217UE Processor (3M cache, 1.6 GHz)
Intel® Core™ i7-3555LE Processor (4M cache, up to 3.20 GHz)
Intel® Core™ i7-3612QE Processor (6M cache, up to 3.10 GHz)
System ChipsetMobile Intel® QM77 Express Chipset
Graphics ControllerIntel® HD Graphics 4000 (integrated)
System Memory SlotSODIMM DDR3/DDR3L slot x 2
DRAM16 GB max. capacity (204-pin SODIMM x 2, each supporting unbuffered
ECC DDR3 memory at 1333 and 1600 MT/s and 8 GB maximum per
Supported OSWindows 7 Pro for Embedded Systems
Windows Embedded Standard 7 (WS7P) 64-bit
Linux Debian 7
Note: OS available by CTOS
Storage Slot2.5-inch HDD/SSD slots x 4
CFast slot x 1

Computer Interface

Ethernet PortsAuto-sensing 10/100/1000 Mbps ports (RJ45 connector) x 4
Serial PortsRS-232/422/485 ports x 2, software selectable (DB9 male)
USB 2.0USB 2.0 hosts x 6, type-A connectors
Expansion SlotsPCIe x1 slots x 3
PCIe x16 slot x 1
PCI slots x 2
Video InputVGA x 2, 15-pin D-sub connector (female)

LED Indicators

SystemPower x 1
Storage x 1
Programmable x 8
LAN8 per port (10/100/1000 Mbps)
Serial2 per port (Tx, Rx)

Serial Interface

Baudrate50 bps to 115.2 kbps
ConnectorDB9 male
ESD8 kV (level 4)
Isolation2 kV
Serial StandardsRS-232/422/485
Surge2 kV

Serial Signals

RS-422Tx+, Tx-, Rx+, Rx-, GND
RS-485-2wData+, Data-, GND
RS-485-4wTx+, Tx-, Rx+, Rx-, GND

Power Parameters

Power ButtonReset button (front panel)
ON/OFF (rear panel)
Power Consumption60 W (max.)

Physical Characteristics

Dimensions (without ears)361 x 440 x 133 mm (14.23 x 17.32 x 5.24 in)
Weight14,000 g (31.11 lb)
Installation19-inch rack mounting

Environmental Limits

Operating TemperatureStandard Models: -40 to 60°C (-40 to 140°F)
Wide Temp. Models: -40 to 75°C (-40 to 167°F)
Storage Temperature (package
-40 to 85°C (-40 to 185°F)
Ambient Relative Humidity5 to 95% (non-condensing)

Standards and Certifications

EMCEN 61000-6-2/-6-4
EMICISPR 32, FCC Part 15B Class A
EMSIEC 61000-4-11 DIPs
IEC 61000-4-2 ESD: Contact: 8 kV; Air: 15 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 10 V/m
IEC 61000-4-4 EFT: Power: 4 kV; Signal: 4 kV
IEC 61000-4-5 Surge: Power: 4 kV; Signal: 4 kV
IEC 61000-4-6 CS: 10 V
IEC 61000-4-8: 20 A/m
Power SubstationIEC 61850-3, IEEE 1613
Protection RelayIEC 60255
SafetyEN 60950-1, IEC 60950-1, UL 60950-1
ShockIEC 60068-2-27, IEC 60870-2-2, IEC 61850-3 Edition 1.0


Green ProductRoHS, CRoHS, WEEE


TimeDA-820-C1-SP-HV-T: 193,537 hrs
DA-820-C1-DP-HV-T: 222,207 hrs
DA-820-C1-SP-LV-T: 283,281 hrs
DA-820-C1-DP-LV-T: 288,116 hrs
DA-820-C3-SP-HV-T: 193,537 hrs
DA-820-C3-DP-HV-T: 222,207 hrs
DA-820-C3-SP-LV-T: 283,281 hrs
DA-820-C3-DP-LV-T: 288,116 hrs
DA-820-C7-SP-HV-T: 191,570 hrs
DA-820-C7-DP-HV-T: 219,618 hrs
DA-820-C7-SP-LV-T: 240,015 hrs
DA-820-C7-DP-LV-T: 285,508 hrs
DA-820-C8-SP-HV: 172,182 hrs
DA-820-C8-DP-HV: 194,509 hrs
DA-820-C8-SP-LV: 240,015 hrs
DA-820-C8-DP-LV: 285,508 hrs
StandardsTelcordia (Bellcore) Standard TR/SR


Warranty Period3 years
DetailsSee www.moxa.com/warranty
Name Type Version Release Date
Datasheet for DA-820 Series Datasheet V1.5 22 Febuary 2020

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