G4I-D22B

Description

16-point DC input module for LS G4/GM4 PLCs, rated for 12/24 VDC and implemented as a current-source input type. It provides the same mechanical/slot form factor as other G4I input modules so it drops straight into the rack.

The Polar Energy Assessment:

The D22B is the 16-point, 12/24 VDC, current-source variant intended where your field wiring expects sourced inputs (PNP style). Expect the usual G4 family characteristics: factory catalogue part, documented input currents and operating voltage window, and common distributor availability for spares. Use this when your sensors or proximity switches are wired as current-source outputs.

Pros

• 16 channels in one slot; good density.
• Current-source input type fits PNP wiring without extra interface.
• Widely stocked as new/surplus by automation resellers.

Limitations

• Variant matters: D22B is source-type; ordering the wrong letter (A/C) gives sink or different voltage expectations.
• Limited to DC sensing; AC needs a different module.

Typical use cases

• 12/24 VDC proximity sensors, PNP outputs, machine limit/home switches wired as source.
• Spare parts kit for G4 PLC service teams.