Product Description:

The X20SO4110 belongs to the X20 Fieldbus Input Output Modules series produced by B&R Automation. It is a four-channel digital output module that installs on an X20 backplane to switch 24 V DC loads in step with the controller cycle. Within an automation cell, the module provides electrically isolated outputs so actuators such as contactors, valves, or indicator lamps can be driven directly from the fieldbus without separate relays. This arrangement suits compact machine I/O stations where output wiring is collected close to the controller assembly.

The module draws only 0.25 W of bus power, which helps keep overall cabinet dissipation under control. Each output is separated from the internal electronics by 500 Veff of insulation between the channel and the bus, which helps prevent ground loops between the field supply and the PLC rack. The output transistors are supplied from 24 VDC, and each path can deliver a nominal current of 0.5 A to its load. Internally, the board consumes 1.3 W to support gate drivers and diagnostic circuitry. It uses Type A output behavior for defined switching characteristics, while off-state leakage remains below 10 µA so downstream devices can fully de-energize. Signal integrity is also supported by a maximum test pulse width of 500 µs and a minimum pulse interval of 49.5 ms, and capacitive loads up to 100 nF can be switched without overstressing the driver stage.

Total sourcing capability across all channels is limited to 2 A. If that limit is exceeded, the module reports a fault within 1 s to help prevent conductor overheating. For inductive loads, the integrated clamp withstands back EMF up to 90 VDC, allowing direct braking of small solenoids. The front bezel is rated IP20, which helps protect against accidental contact in standard control panels when the cabinet door is open. This housing style is intended for enclosed installations where dripping water and heavy dust are not present.