G4H-DT2A

Description

A hybrid digital I/O module for the GLOFA G4/G4H family: 8 DC input points plus 8 transistor (TR) outputs, intended to combine sensing and fast switching in one slot. It is photo-coupler insulated and rated for typical 12/24 VDC industrial panels.

The Polar Energy Assessment:

G4H-DT2A gives you space economy: one module handles both 8 inputs and 8 transistor outputs (sink/source style depending on wiring), so you save a slot compared with separate input and output modules. The module follows LS’s GM4/G4 hybrid I/O specs, with photo-coupler isolation between I/O and the backplane and standard industrial operating ranges for 12/24 VDC systems. Use it when you want faster, solid-state switching than relays while keeping DC sensing on the same board.

Pros

• Combines inputs and transistor outputs in one module, saving rack space.
• Photo-coupler isolation for improved noise immunity.
• Outputs are transistor type so they switch faster and have longer mechanical life than relays.

Limitations

• Transistor outputs are not ideal for switching high inductive loads without external drivers.
• Fixed 8/8 mix may not match every panel’s IO ratio.

Typical use cases

• Machine control panels that need local DC sensing (limit/home switches) and fast solid-state outputs for solenoids or drive enable signals.
• OEM machines where slot economy matters.
• Retrofits replacing older relay modules where faster switching is required.