G4Q-TR2B

Description

A 16-point transistor output module (PNP, source type) for the LS G4 family, rated DC 12/24 V and 0.5 A per output. Use this when your field devices provide sourcing logic or your wiring standard prefers PNP outputs.

The Polar Energy Assessment:

G4Q-TR2B is the source-type sibling to the TR2A, giving 16 PNP outputs for installations that require sourcing outputs (PNP) rather than sinking. Functionally identical in density and per-point current capability to TR2A, the TR2B variant simply flips the wiring convention; check whether site sensors and actuators expect source or sink outputs before ordering. The module retains photo-coupler isolation and the same DC voltage range used across LS transistor output modules.

Pros

• Matches PNP wiring conventions used in many modern sensors and actuators.
• Solid-state outputs, so no mechanical wear.
• Same density as TR2A; useful for 16-point needs.

Limitations

• Still limited to 0.5 A per point; not for heavy loads.
• Requires correct sourcing wiring to avoid miswires.

Typical use cases

• Panels wired with PNP/sourcing field devices.
• Applications that need faster switching than relays but the same voltage range.
• Spares for G4 racks originally specified with source-type outputs.