Evco EPH4EXP Hardware manual Manual de usuario descargar pdf (Pagina 50)

EVCO S.p.A. c-pro 3 | Hardware manual ver. 3.2 | Codice 114CP3E324

page 50 of 116

ANALOG INPUTS

Analog inputs.

Each analog input is configurable via configuration parameter for PTC / NTC / Pt 1000 probes / 0-20 mA / 4-20 mA / 0-5 V ratiometric /

0-10 V transducers.

Terminal Meaning

AI1 analog input 1

AI2 analog input 2

AI3 analog input 3

GND ground

+5V power supply 0-5 V ratiometric transducers (5 VDC, 40 mA max.)

+24V power supply 0-20 mA / 4-20 mA / 0-10 V transducers (24 VDC, 120 mA max.)

The maximum length of the connecting cables of the analog inputs and the one of the power supply of the transducers is

100 m (328 ft).

The expansion incorporates a restorable thermal protection of the power supplies against the short circuit and the overload.

For the settings about the analog inputs look at chapter 6 “CONFIGURATION”.

PROG

Port to update the firmware of the instrument.

POWER SUPPLY

Power supply.

Terminal Meaning

V≅

power supply expansion (24 VAC / 20... 40 VDC)

V≅

power supply expansion (24 VAC / 20... 40 VDC)

The maximum length of the connecting cables of the power supply of the expansion is 30 m (98 ft).

Protect the power supply with a fuse rated 0.8A-T 250 V.

If the expansion is powered in direct current, one will not have to respect the polarity of the power supply voltage.

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Evco EPH4EXP Hardware manual Manual de usuario Pagina 50