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Modem

Optional module cellular GPRS modem (Modbus/TCP or DNP3.0/TCP protocols)

Optional IEC 61850 protocol

Instrument firmware easy upgrade, using SATEC Power Analysis Software (PAS) via any communication port

Master/Slave feature—reading of other meter registers or pass-through feature. Connect to other meters via RS485 and connect to SCADA master

INPUT/OUTPUT

Two (2) independent digital inputs for Synchronization/ Breaker Status/Counter functions—includes fast 1 kHz sampling rate

KYZ relay output (Form C contact)

Optional module with 8 digital inputs used for breaker status or pulse counting

Optional Module for 6 relay outputs. 2 Form A (5A @ 250V AC/0.2A@ 250V AC) & 4 FORM C (0.15A @ 250V AC/DC)

Optional 4CH Analog output module. 0-20mA, 4-20mA, ±1mA and 0-1mA

AC/DC AUX. PS module: 50-288V AC, 90-290V DC

DC/DC AUX. PS module: 24-48V DC

COMMUNICATION

  • Reads 5 simultaneous independent communication ports (3 standard):

    • Infrared port (Modbus RTU/ASCII and DNP3.0 protocols). Supports IEC 62056-21/61 standard—hardware and protocol specifications for local meter data exchange

    • USB 2.0 full speed device port (Modbus RTU protocol, 12 Mbps) for fast local communications and data retrieval

    • RS485 universal serial communications port (up to 115,200 bps, Modbus RTU/ASCII and DNP3.0 protocols)

MASTER

1000 Ft Max

SLAVE

LAST SLAVE

SCADA DNP3.0 / MODBUS

OPTIONAL ADD-ON I/O & COMMUNICATION MODULES

State-of-the-art communication abilities enabled by the EM920 concept:

  • Ethernet 10/100 Base-T port (Modbus/TCP or DNP3.0/ TCP protocols), up to five non-intrusive simultaneous connections, Telnet service port and RS232/485 user versatile port

    • 1-ms satellite-synchronized clock—IRIG-B format timecode

input

    • Supports SNTP synchronization and cross trigger of events

  • Dial Up modem module, (Modbus & DNP3.0 protocol) up to 56 kb/s

MV 90

MASTER SLAVE MODE

PAS Software

Ethernet / Modem

RS485

(CONNECT UP TO 8 DEVICES)

120 Ω

Tx (+) / Rx (+)

Tx (-) / Rx (-)

RS485

RS485

120 Ω

9

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