Opto 22 G4AD25 Data Sheet

I/O MODULES

G4

ANALOG VOLTAGE INPUT

DAT A SHEET

Form 601-050809

Description

The G4AD25 module provides a single channel of transformer
and optically-isolated analog-to-digital conversion. The nominal
input range is 0 to 100 volts AC or DC with an over range capability
to 263 volts. The G4AD25 module can survive to 500 volts peak
applied directly across its inputs. The G4AD25 may be used to
monitor 120/240 volt AC/DC and 12/24/48 volt AC/DC system voltage.
The module plugs into an Opto 22 Modular controller or an analog

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Part

Number

G4AD25 0 to 100 Volt AC/DC Input

brick and is 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.

NOTE: Any system using analog sensors and input modules should
be calibrated annually for analog signals. To do so, use OptoControl
commands “Calculate and Set Analog Offset” and “Calculate and
Set Analog Gain.”

Description

I/O MODULES

G4

ANALOG VOLTAGE INPUT

DAT A SHEET

Form 601-050809

Specifications

G4AD25 Specifications

Nominal Input Range 0 to 100 V true r ms AC/DC
Input Over Range 100 V to 263 V
Resolution 24.4 mV from 0 to 100 V

Input Response Time 5% of scale change 5 Volts/millisecond

DC Commo n Mode Rejecti on -120 d B
AC Common Mode Rejection -120 dB @ 60 Hz
Maximum Operating Commo n

Mode Voltage
Input vs Output

Zero Scale (1,920 Hz)
Full Scale (9,600 Hz)

Accuracy 0.5 V (0.5%)
DC Reversal ± 0.3 V (0.3%)
Power Requirements 24 VDC (± 0.5 V) @ 40 mA logic supply

Input Resistance
Diffe r ential
Co mmo n Mode

Ambient Temperature
Operating
Storage

48.8 mV from 100 to 200 V

97.7 mV from 200 to 263.7 V

63.2% of scale change 63.2 Volts/200 milliseconds

99.9% of scale change 99 Volts/1200 milliseconds

750 VDC or peak AC

0 V

100 V

5.5 V ma ximum @ 15 mA

1 MΩ
1,000 MΩ

0° to 70° C

-25° to 85° C

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