Features
4000 volts transient optical isolation
Built-in LED status indicator
Small footprint design, reducing mounting space by
approximately 50 percent
Built-in filtering for transient suppression and noise
rejection
Operating temperature: -30 °C to 70 °C
UL recognized, CSA certified, CE approved
Passes NEMA Showering Arc Test (ICS 2-230)
Meets IEEE Surge Withstand Specification (IEEE-472)

Description
Opto 22’s G4 DC input modules are used to detect on/off DC
voltage levels. Each module provides up to 4000 volts
(transient) of optical isolation between field inputs and the
logic output of the circuit.
All DC input modules except the G4IDC5K and G4IDC5D are
designed with filtering on the input and a hysteresis amplifier,
providing high noise rejection and transient-free, “clean”
switching. The G4IDC5K is a fast-switching module used to
detect signals produced by photoelectric switches and TTL
devices. The low-cost G4IDC5D is used for data acquisition.
The G4IDC5MA is a special module featuring a manual-on/
manual-off/automatic switch, ideal for diagnostic testing of
control applications.
The G4IDC5-SW and G4IDC5-SWNC modules supply power to
an external dry contact switch and sense switch closure (SW)
or opening (SWNC).
Typical applications for DC input modules include sensing the
presence or absence of voltage and sensing contact closure
from sources such as proximity switches, limit switches,
selector switches, push buttons, photoelectric switches, and
TTL-compatible devices.