Product Description:

The 3NC150.6 is an I/O and motion interface module released by B&R Automation within the System 2005 Controllers series. Installed on the system backbone, the unit supplies fast analog conversion and incremental encoder processing so that a host CPU can execute time-critical positioning, counting, and closed-loop control tasks in industrial automation cells. This arrangement lets the controller handle feedback acquisition and analog command generation on the same module.

The board provides two analog outputs that swing up to ±10 V, and each channel uses a 12-bit digital-to-analog converter to provide 4096 discrete setpoint steps. A conversion cycle completes in 35 µs, which minimizes latency between command generation and actuator response. Basic linearity is held to ±0.5% at 20 °C, so valve or drive references remain accurate without frequent recalibration. Two counter inputs accept quadrature or single-ended signals, and each has a 32-bit depth to support extended production runs before rollover. Incoming edges can be tracked up to 100 kHz, and the selectable 1×, 2×, or 4× evaluation modes let resolution match machine speed. Both symmetrical and asymmetrical encoder formats are accepted, while the overall assembly meets the IP20 enclosure class for mounting inside a protected cabinet.

Total module demand reaches 5.0 W, divided between 3.5 W on the 24 V field supply and 1.5 W on the 5 V backplane rail, so thermal loading inside a tight rack remains low. The output stages are short-circuit proof, which allows wiring faults to clear without damaging the DAC circuitry. Two encoder ports are presented on 2x 9-pin female D-SUB connectors, which support direct connection to common encoder cabling and orderly routing inside the cabinet. Keeping the encoder connections separate from the analog command channels also helps the module serve motion and I/O tasks within the same rack.