3DI476.6/T B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation 3DI476.6/T is part of the System 2005 Controllers series and has 16 inputs with an input resistance of 4.8 kΩ. The module operates at a nominal input voltage of 24 VDC, features channel-to-PLC and group-to-group isolation, and supports an input filter of up to 1.2 ms. It comes rated with IP20 protection and a total power consumption of 1.5 W.
Internal Product Review
The 3DI476.6/T is a System 2005 digital input controller engineered for 16 inputs at a 24 VDC nominal input voltage. Channel-to-PLC isolation and group-to-group isolation support clean signal handling and dependable integration in segmented control architectures. An input filter of ≤1.2 ms gives the module a fast, well-tuned response for discrete automation tasks.
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Product Description:
B & R Automation manufactures the digital input module 3DI476.6/T for its System 2005 Controllers series. This single-width module receives 24-volt field signals and transfers their logical state to the CPU, giving the automation system fast visibility of sensors, pushbuttons, or limit switches spread throughout a machine. By translating these discrete inputs into controller-ready data, the part helps coordinate sequence logic, interlocks, and diagnostics that keep material-handling and packaging lines operating within defined safety and performance limits.
The module is powered from a nominal control voltage of 24 VDC, and it offers 16 digital input points arranged in four electrically separated groups. An input hardware filter of ≤1.2 ms suppresses contact bounce so the controller receives clean edge information. Field devices can be supplied with up to 30 VDC without damaging the circuitry, while the housing has a protection rating of IP20, indicating finger-safe terminals for cabinet installation. Each channel is isolated from the PLC backplane, yet channels inside the same group share a common potential, while the groups remain galvanically isolated to minimize crosstalk during switching transients.
The overall thermal demand remains at only 1.5 W, so cabinet airflow is rarely a constraint even with continuous operation. Each input is tied to an impedance of 4.8 kΩ, establishing a defined current window for sensors wired as either sink or source devices. The input front end survives transient disturbances of 500 V for 50 µs that may arrive on field cabling at 100 ms intervals, preventing nuisance trips. Channel activity is displayed by per-channel LEDs, simplifying status checks and troubleshooting. Field conductors terminate on a removable 1x TB170 block, allowing rapid replacement of the module without disturbing the wiring harness.
