Installation and Connection
ECW500 | 29
Reference 0V for the serial port RS485/422
Communication serial port RS 485 / 422
Full duplex / half duplex
9600 bps to 115200 bps, 8 bits
Modbus RTU
Transmission and reception signals for the
communication in full duplex mode
Transmission and reception signals for the
communication in half duplex mode
Digital input Turn On Excitation
Isolated Digital Inputs
High Level: 8Vdc
Low Level: 3Vdc
Maximum input voltage: 30Vdc
Input current: 11mA @ 24Vdc
Digital input Turn Off Excitation
Isolated analog output
Resolution: 14 bits
Signal: 0 to +10V (R
L
10k)
4 to 20mA (R
L
500)
Isolated Digital Inputs
High Level: 8Vdc
Low Level: 3Vdc
Maximum input voltage: 30Vdc
Input current: 11mA @ 24Vdc
4 to 20 mA (R
IN
= 249)
Resolution: 12 bits
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Differential measurement from 0 to ± 10V (R
IN
= 200k)
Resolution: 11 bits + signal
Input for measurement of phase voltage C
Rated voltage for measurement: 600 Vac
Maximum voltage for measurement: 660 Vac
Input for measurement of phase voltage B
Input for measurement of phase voltage A
Digital output 3 (RL03) Programable
6 relay outputs
Rated voltage of contacts: 250Vac
Maximum voltage for commutation: 400Vac
Rated current: 8 A
Maximum capacity for commutation:
35 Vdc 8 A
48 Vdc 1,2 A
125 Vdc 0,3 A
Digital output 2 (RL02) Programable
Digital output 1 (RL01) Programable
Digital output 0 (RL00) Programable
Digital output General Fault
Digital output Status ECW500
Digital input Disable Parallel Operation
Isolated Digital Inputs
High Level: 8V
Low Level: 3V
Maximum input voltage: 30V
Input current: 11mA @ 24Vdc
Digital input Disable Online Operation
Signals for the backup channel function
(function not available on this version)
12 Vdc Power Supply, ±10%
Capacity: 200mA
Reference 0V to the 12 Vdc power supply
Signals of the serial communication for the
backup channel function
(function not available on this version)
Isolated Digital Inputs
High Level: 8V
Low Level: 3V
Maximum input voltage: 30V
Input current: 11mA @ 24Vcc
Digital input Enable Online Operation
Digital input Enable Parallel Operation
Digital input Pre-position
Figure 5.6 Control connections for the ECW500