Contrel EMA90 - TECHNICAL FEATURES; GENERAL SPECIFICATIONS

EMA90 - USER MANUAL
-6-
2) TECHNICAL FEATURES
2.1) GENERAL SPECIFICATIONS
Power supply/Auxiliary voltage
85-265 V 50/60 Hz/dc.
20-60 V 50/60 Hz/dc (option).
Isolation voltage
3700 Vac rms x 1 minute.
Voltage input
3 inputs, range 10-600Vrms between phase-phase.
Over voltage up to 750 Vac permanent, beyond this value it is imperative to use voltage transformers.
Over voltage category: III (fixed installation)
Pollution degree: 2 (normally not conductive; temporary conductive for condensation)
Resistor input: >2 MΩ.
Burden 0.2 VA.
Current input
Model EMA90
Model EMA90-1A
3 isolated inputs (internal CT) range
10mA-5A rms
4mA-1A rms
Over current max
10A (100A for 1 second)
2A (10A for 1 second)
Burden 0.2 VA 0.04 VA
Consumption
4VA typical.
6VA max, full optional.
Serial port
Standard: N°1 serial port available as RS485 and RS232 (half duplex isolated, signals Tx/Rx, Gnd).
Option: S485: N°1 RS485 in addition to the standard port (the option has an output 0 - 5V
galvanic insulation).
PF/S: N°1 PROFIBUS port in addition to the standard port
ETH: N°1 ETHERNET port in addition to the standard port
ETH/S: N°1 ETHERNET port and N°1 RS485 port in addition to the standard port
Baud rate serial port: from 1200 to 38400 bps.
Baud rate profibus port: automatically detected among those supported: 9.6 Kbit/s - 19.2 Kbit/s -
5.45 Kbit/s - 93.75 Kbit/s - 187.5 Kbit/s - 500 Kbit/s - 1.5 Mbit/s - 3 Mbit/s
Communication protocol: ASCII and MODBUS-RTU standard, PROFIBUS DP-V0 and MODBUS TCP
options.
Input signals
Standard: N°2 passive opt isolated inputs (1000 V), 12 - 24 Vcc.
Option: 4DI: N°4 passive opt isolated inputs (1000 V), 12 - 24 Vcc (total 6 inputs).
The maximum frequency detected by all the inputs is 45 Hz (minimum pulse duration 22ms, duty cycle
50%).
Output signals
Standard: N°2 digital outputs 12-230 Vca-cc / 150mA max. The typical resistance with closed
contacts is 8Ω (R
ONmax
= 12Ω). Maximum frequency pulse emission: 16Hz.