SATEC EM920 Operation Manual - Manual (Page 12)

Chapter 1 Introduction
12 EM920 Power Quality and Revenue Meter
• 4AO analog output module with 0-1mA, +/-1mA, 0-
20mA and 4-20mA current output options
Memory
• 16 Mbyte flash memory for long-term billing, event,
waveform and data recording
Standard Communications
• Front ANSI C12.18 optical serial communication port
(Modbus RTU/ASCII and DNP3 protocols)
• Embedded serial RS-485 port (Modbus RTU/ASCII and
DNP3 protocols)
• Full speed USB 1.1 port (Modbus RTU protocol)
Expansion Communication Slot
• Serial RS232/RS485 communication port (Modbus
RTU/ASCII and DNP3 protocols)
• Ethernet port (Modbus/TCP, DNP3/TCP and IEC 61850
protocols), up to 5 simultaneous connections
• Wireless GSM/GPRS modem (Modbus/TCP and
DNP3/TCP protocols)
Backup Power Supply
• Auxiliary backup 50-288VAC/90-290VDC power supply
module
Upgradeable Firmware
• New features can be easily added to the meter by
simply replacing firmware through any communication
port.
Software Support
• PAS – free meter configuration and data acquisition
tool
• eXpertPower TM – SATEC proprietary Internet services
Supplemental Documents
BG0481 EM920 Installation Manual
BG0484 EM920 Modbus Reference Guide
BG0485 EM920 DNP3 Reference Guide
BG0486 EM920 IEC 61850 Reference Guide
BG0487 EM920 IEC 62056-21 Reference Guide
BG0337 PAS Getting Started Guide