ECPA42-0 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation ECPA42-0 is a module from the ECP Multi Control Modules series. It features four outputs with a converter resolution of 11 bits, a voltage step of 9.77 millivolts per bit, and a maximum output current of ±20 milliamps per channel. The module supports an output voltage of ±10 volts and has a maximum load resistance of 560 ohms.
Internal Product Review
The ECPA42-0 is a B & R Automation multi control module with 4 outputs and ±10 V output capability. An 11-bit converter resolution and 0.2% linearity support accurate signal generation in tightly tuned control loops. A max output current of ±20 mA per channel is a strong specification for stable analog interfacing.
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Product Description:
The ECPA42-0 analog output module belongs to the ECP Multi Control Modules series from B & R Automation. As a multifunction output board, it converts digital setpoints from the controller into process-level currents or voltages that actuators and control valves can read. Within an industrial automation rack, it occupies one slot and supplies the final analog link between the central CPU and external field devices, enabling closed-loop regulation of drives, dampers, and proportional valves.
The module’s converter operates with an 11 Bit resolution, so each increment translates to 9.77 mV/Bit across the full output span. The four output channels share an adjustable range of ±10 V or a corresponding current mode up to ±20 mA/Channel, allowing one board to drive both voltage-controlled and current-controlled loads. With 4 independent outputs, the unit suits multi-axis or multi-loop equipment. Linearity is held within 0.2%, and the initial offset at 20 °C is limited to ±0.1%, providing predictable zero and span. A gain error of ±0.2% at the reference temperature adds to these static accuracy figures, while the lack of galvanic isolation means the outputs reference the internal system ground.
Temperature behavior is stabilized by a gain drift of ±0.12% per °C and an offset drift of ±0.05% between 0 °C and 60 °C, allowing consistent actuation in warm control cabinets. Each channel can drive loads as low as 560 Ω without exceeding compliance limits, and the aggregate drive capability is bounded by a -80 mA / +160 mA total current envelope. Internal regulators draw 1.7 W from the +15 V rail and an additional 0.5 W from the +8 V rail, which helps keep backplane power demand clear during system planning. These load, drift, and power characteristics support stable analog output performance during long operating cycles.
