Opto 22 G4DA3, G4DA8 Data Sheet

I/O MODULES

ANALOG CURRENT LOOP OUTPUT

G4

DAT A SHEET

Form 425-010206

Description

The modules provide a single channel of transformer and optically-isolated
digital-to-current conversion for 0-20 mA and 4-20 mA current loops. One of the
unique features is that the isolated loop supply can be provided by the modules.
This eliminates the need for the user to provide the loop power supply (typically
15-48 V) and also saves the associated wiring, barrier strips, etc. The modules
also include complete electrical channel-to-channel isolation, which eliminates
troublesome ground loop problems. Modules plug into an Opto 22 Modular
controller or an analog I/O brick and are secured by a captive screw. The field
connections are made through four contacts to the terminal strip located on the
brick base or controller I/O board.

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Part

Numbers

G4DA3 4 to 20 mA Output

G4DA8 0 to 20 mA Output

Description

I/O MODULES

ANALOG CURRENT LOOP OUTPUT

G4

DAT A SHEET

Form 425-010206

Specifications

Response time Full scale step

Maximum loop resistance

when sourcing loop

Resolution 12 bits

Isolation (Transient)

Input-to-output

Input-to-analog supply

Ambient temperature

Storage

GENERAL SPECIFICA TIONS

change in 3 ms

4,000 Vrms
4,000 Vrms

-30° to 70° C

-40° to 85° C

650 W

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G4DA3 G4DA8

Output Current 4-20 mA 0-20 mA

Accuracy 16 µA 20 µA

Connections