ABB DO526 1SAP240800R0001 S500 Digital Output Module

Product Overview

The ABB DO526 (1SAP240800R0001) functions as a specialized high-current digital expansion module within the S500 Distributed Automation I/O family. Unlike standard low-power cards, this module delivers a robust 2A per channel through 8 transistor-based outputs. This high-capacity design allows the PLC to control larger solenoid valves, heavy-duty contactors, and DC actuators directly, effectively eliminating the need for intermediate interposing relays. We supply this unit as 100% Brand New and Original, ensuring your control architecture utilizes factory-certified switching performance for high-load industrial applications.

Technical Specifications

The DO526 coordinates high-load switching through the following technical parameters:

• Number of Digital Outputs: 8 Channels

• Output Type: Transistor (Source)

• Rated Output Current: 2 A per channel

• Output Voltage: 24V DC

• Voltage Range: 20.4 V to 28.8 V DC

• Wiring Configuration: 1-wire connection

• Supply Voltage: 24V DC (via Terminal Base)

• Protection Rating: IP20

• Net Weight: 0.132 kg

• Dimensions: 67.5 mm (W) x 76 mm (H) x 62 mm (D)

Engineering Advantages

• Direct High-Load Actuation: Each of the 8 channels drives up to 2A. This eliminates the hardware costs, DIN rail space, and wiring complexity associated with installing external relays for high-power solenoid valves or signaling lamps.

• Fast Transistor Switching: Transistor technology provides virtually unlimited switching cycles and near-instantaneous response times compared to mechanical relay cards. This optimizes performance in high-speed sorting and pulse-width modulation applications.

• Streamlined 1-Wire Wiring: The 1-wire architecture simplifies field terminations. When paired with a compatible S500 terminal base, this design reduces potential wiring errors and accelerates the commissioning of decentralized I/O stations.

• Integrated Fault Protection: The module incorporates electronic short-circuit and overload protection. This safeguard prevents field-side electrical faults from damaging the internal circuitry or disrupting the broader control logic of the AC500 PLC.

• Modular Maintenance Efficiency: The DO526 plugs into a standard S500 Terminal Base. This allows maintenance teams to replace the electronic module without disconnecting field wiring, drastically reducing Mean Time to Repair (MTTR) during hardware upgrades.

FAQs

• Can the DO526 control inductive loads directly?

  Yes. The transistor outputs handle inductive loads such as solenoid valves. However, for extremely large inductive loads, we recommend using external flyback diodes or varistors to suppress back-EMF and extend the module's operational lifespan.

• Does this module require a specific Terminal Base?

  Yes. You must mount the DO526 on a compatible S500 Terminal Base (such as the TU515 or TU516). The base provides the physical mounting to the DIN rail and the electrical interface for the 24VDC supply and the 8 high-current outputs.

• How does the total module current limit work?

  While each channel supports 2A, you must verify the total current capacity of your power supply and terminal base. Ensure the sum of all concurrently active 2A outputs does not exceed the thermal or electrical limits specified in the AC500 system manual.

• Does the DO526 provide per-channel diagnostics?

  The module communicates status and error data through the I/O bus to the CPU. You can monitor short-circuit or overload conditions via the front-facing LED indicators or through the ABB Automation Builder software diagnostics.