Power Substation Computers DA-681A Series Moxa vietnam


  • DA-720 Efficient IIoT Data ProcessingIEC 61850-3, IEEE 1613, and IEC 60255 compliant for power substation automation systems (DPP and DPP-T models only)
  • 3rd Gen Intel® Core™ Celeron 1047UE 1.4 GHz CPU
  • 1 built-in DDR3 memory socket
  • 1 mSATA for OS and 1 SATA III for storage expansion
  • 6 gigabit Ethernet ports for network redundancy
  • 4 USB 2.0 ports for high speed peripherals
  • 2 isolated RS-232/422/485 and 10 isolated RS-485 ports
  • Embedded Debian 8 Linux (W7E by CTOS)
  • Supports both 100 to 240 VAC and VDC power inputs (single power and dual power models available)
  • Optional IRIG-B expansion module available on DPP and DPP-T models



The Moxa DA-681A Series x86-based rackmount embedded computers are designed for control, monitoring, data acquisition, and protocol conversion applications. With its robust design, the DA-681A is suitable for industrial automation applications, such as power automation, transportation, and oil and gas.
The DA-681A’s main operating system is based on the 3rd Gen Intel® Core™ Celeron 1047UE 1.4 GHz CPU and HM65 chipset, which supports standard x86, 1 x VGA, 4 x USB, 6 gigabit LAN ports, 2 RS/232/422/485 3-in-1 serial ports, and 10 RS-485 (RS-422 by CV) ports. The DA-681A has a mini PCIe socket for mSATA and comes with Linux pre-installed; Windows 7 Embedded is also supported by the CTOS (Configuration To Order Service) process.
Another plus is that the serial ports come with 2 kV digital galvanic isolation protection to guarantee communication reliability in harsh industrial environments. In addition, the state-of-art IEC 61850-3, IEEE 1613, and IEC 60255 compliance all-in-one design provides rich interfaces especially well suited for of power substation automation applications. 

Application Note


Efficient IIoT Data Processing with High I/O Density Computers Moxa Smart Recovery


DA-720 Efficient IIoT Data ProcessingWith more and more companies implementing IIoT applications, the demand to connect hundreds or thousands of devices to industrial automation systems has increased dramatically. The DA-720, a high-performance industrial-grade x86 platform, is ideal for such applications. It is based on the lntel® 6th Gen Skylake processor and provides a high density of gigabit Ethernet and serial ports in a 19-inch 2U rack-mountable case, making it an ideal choice for IIoT applications in industrial automation systems.
Find out how Moxa’s high I/O density rackmount computers can streamline your power, railway, and factory automation applications.


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Hardware Specifications
CPU 3rd Gen Intel® Core™ Celeron 1047UE 1.4 GHz
OS Linux Debian 8 (pre-installed) 
Note: W7E available by CTOS
System Chipset Intel HM65
BIOS 64 Mbit Flash BIOS, PCI Plug & Play, ACPI
System Memory 8 GB capacity, 2 GB for Linux pre-installed; 1 slot of DDR3-1066/1333 SO-DIMM SDRAM
Expansion Bus PCI/104 onboard (DPP models only)
USB USB 2.0 hosts x 4, Type A connector, supports system boot up
Built-in 8 GB for Linux (pre-installed in mSATA)
Storage Expansion SATA 3.0 interface
Graphics Controller Intel® HD Graphics (Integrated)
Display Memory Dynamic video memory (shares up to 32 MB of system memory)
Display Interface 1 VGA output (DB15 female connector)
Resolution CRT display mode with pixel resolution up to 2048 x 1536 at 75 Hz
Ethernet Interface
LAN Auto-sensing 10/100/1000 Mbps ports x 6
Magnetic Isolation Protection 1.5 kV built-in
Serial Interface
Serial Standards • 2 RS-232/422/485 ports (DB9 male)
• 10 RS-485 ports (terminal block)
ESD Protection 15 kV for all signals
Surge Protection 4 kV (DA-681A-I-DPP-T only)
Isolation 2 kV digital galvanic isolation
Serial Communication Parameters
Data Bits 5, 6, 7, 8
Stop Bits 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
Flow Control RTS/CTS, XON/XOFF
Baudrate 50 bps to 115.2 kbps
Serial Signals
RS-422 TxD+, TxD-, RxD+, RxD-, GND
RS-485-4w TxD+, TxD-, RxD+, RxD-, GND
RS-485-2w Data+, Data-, GND
System Power, Storage
LAN 100M x 6, 1000M x 6
Serial RS-232/422/485: 2 x Tx, 2 x Rx
RS-485: 10 x Tx, 10 x Rx
Programmable 6 LEDs
Power Failure LED x 2 (dual power models)
Switches and Buttons
Power Button On/Off (on rear panel)
Reset Button Hard Reset (on front panel)
Physical Characteristics
Housing SECC sheet metal (1 mm)
Weight 4.5 kg (10 lb)
Dimensions 440 x 315 x 45 mm (17.32 x 12.40 x 1.77 in), 19-inch 1U height
Mounting Standard 19-inch rackmount
Environmental Limits
Operating Temperature SP Models: -25 to 55°C (-13 to 131°F)
DPP Models: -25 to 55°C (-13 to 131°F)
DPP-T Models: -40 to 70°C (-40 to 158°F)
Storage Temperature -40 to 85°C (-40 to 185°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Anti-Vibration 7 mm (2-9 Hz), 20 m/s/s (9-200 Hz), 15 m/s/s (200-500 Hz) @ IEC-61850-3, IEC 60870-2-2/Cm/(3M6)/(4M6), sine wave, 2-500 Hz, 1 Oct/min, 10 cycles, 2 hrs 40 mins per axis
Anti-Shock 300 m/s2 @ IEC-61850-3, IEC 60870-2-2/Cm/(3M6)/(4M6), half sine wave, 11 ms
Power Requirements
Input Voltage 100 to 240 VAC; 100 to 240 VDC
Input Current 0.80 A @ 100 VAC; 0.41 A @ 100 VDC
Power Consumption 25 W
Standards and Certifications
Safety UL 60950-1, IEC 60950-1, EN 60950-1
Electrical Substation IEC 61850-3, IEEE 1613, IEC 60255
Protection Relay IEC 60255
EMC EN 61000-6-2/6-4
EMI CISPR 22, FCC Part 15B Class A
EMS 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
IEC 61000-4-11
For DPP models only:
IEC 61000-4-16: 30 V / 300 V
IEC 61000-4-17: 10% nominal DC voltage
IEC 61000-4-18:
100 kHz: 25K VCM; 1 kv DIM
1 MHz: 2.5 kV CM; 1 kV DM
IEC 61000-4-29: 30% reduction, 0.1 sec.
Green Product RoHS, CRoHS, WEEE
Alert Tools • Built-in buzzer and RTC (real-time clock) with battery lithium backup
• Built-in 1 relay for visual/audio alarm.
Automatic Reboot Trigger Built-in watchdog timer, configurable for restarts at 1 to 255 second intervals
MTBF (mean time between failures)
Time DA-681A-I-SP: 240,784 hrs
DA-681A-I-DPP: 215,436 hrs
DA-681A-I-DPP-T: 215,436 hrs
Standard Telcordia (Bellcore) Standard TR/SR
Warranty Period 3 years
Details www.anhnghison.com
Software Specifications
OS Linux Debian 8, 64-bit
Terminal Server (SSH) Provides secure encrypted communications between two un-trusted hosts over an insecure network
Kernel Version GNU/Linux 3.16
System Shell DASH (default), BASH
File System EXT2, EXT3, EXT4
Programming Language Support PHP, Perl, Python
Internet Security Suite OpenVPN, iptables
Secure Shell for Remote Access SSH allows remote logins to a secure encrypted console from any connected network
Watchdog Features a hardware function to trigger system reset in a user specified time interval (Linux standard API)
Windows Embedded Standard 7 (by CTOS)
Core OS • Windows 7 Embedded, 32-bit/64-bit
• Sensor and Location Platform
• Remote Procedure Call
Applications and Services Development • .Net Framework 3.5
• Remote Desktop Protocol 7.1
• COM OLE Application Support
• COM+ Application Support
Internet Services • Internet Explorer 8.0
• IIS 7.0
File Systems and Data Storage • Windows Data Access Components
• Windows Backup and Restore
Diagnostics • Common Diagnostic Tools
• Problem Reports and Solutions
Fonts • Chinese (Trad. and Simp.), Middle East, South East Asian, South Asian Fonts
• True Type Fonts
Graphics and Multimedia • MPEG DTV-DVD Audio Decoder (MPEG-2, AAC)
• MPEG Layer-3 Audio Codecs(MP3)
• MPEG4 Decoders
• Windows Media Video VC-1 (WMV) Codecs
• DirectX and Windows Device Experience
• Windows Media Player 12
Management • Group Policy Management
• Windows Management Instrument (WMI)
• Windows Update
Networking • Extensible Authentication Protocol (EAP)
• Internet Authentication Service
• Telnet Server
• Bluetooth
• Domain Services
• Network Access Protection
• Network and Sharing Center
• Quality of Service
• Remote Access Service (RAS)
• Telephony API Client
• Windows Firewall
• Wireless Networking
Security • Credential Roaming Service
• Credentials and Certificate Management
• Windows Authorization Manager (AZMAN)
• Windows Security Center
• Active Directory Rights Management
• Security Base
• Encrypted File System (EFS)
Embedded Features • Enhanced Write Filter (EWF)
• File-Based Write Filter (FBWF)
• Message Box Default Reply
• Registry Filter
Embedded Self-Health Diagnostics SNMP-based remote scripting layer for monitoring, reporting, and control