Product Description:

The 7DO135.70 digital output module is manufactured by B&R Automation as part of the System 2003 Controllers series. It mounts on the system backplane and translates logic-level commands from the CPU into load-side voltages for actuating field devices. With four solid-state channels available, the module allows a controller to switch indicators, relays, or pneumatic valves directly, streamlining signal distribution inside an industrial automation cabinet.

At the electrical interface, the module accepts a supply rail from 11.4 VDC up to 30 VDC, accommodating normal 24 V systems with headroom for line drop. The push/pull FET stages respond within 2.4 µs and can be switched at frequencies as high as 100 kHz, so the module can generate fast clocks or pulse trains for high-speed sensors. Load capacitance must stay below 20 nF; beyond that value, the output edges slow and protection logic may trigger. Per-channel output current is 0.1 A, while the combined module current may not exceed 0.4 A. Overload and short-circuit monitoring disconnect a faulted channel, and because PLC isolation is not provided, the field supply common remains tied to the controller ground.

Each of the four outputs can source or sink up to 0.1 A, and the channel drops only 0.6 V at that load, reducing power loss across the device. Overall consumption for the board is only 0.2 W, which eases cabinet thermal planning. The housing has an IP20 protection rating, so the module must be installed inside a closed panel, but wiring can be accessed without tools. FET shutdown logic operates within the 0.4 A aggregate limit, coordinating with the overload and short-circuit circuitry to protect both wiring and semiconductors. The module uses push/pull drive capability for discrete output control in System 2003 Controller installations.