PLCs, Power Supplies & Others

The ABB DTDX991A 61430001-UW digital input/output module manages discrete field signals efficiently. This unit weighs 0.44 kg and measures 15.5 cm x 10.5 cm x 3.2 cm. It provides 32 digital inputs and 32 digital outputs on a single board. The module contains one processor and 64 opto-isolators. For energy storage, it includes two 100µF tantalum capacitors. Consequently, the ABB DTDX991A 61430001-UW maintains I/O states during brief power interruptions.

Technical Specifications

The table below lists all verified parameters for the ABB DTDX991A 61430001-UW. Use this data for your system integration planning.

Digital Input Features

Each of the 32 input channels uses a dedicated opto-isolator for signal isolation. The ABB DTDX991A 61430001-UW accepts 24V DC signals from standard field sensors. Therefore, you can connect proximity switches, limit switches, and push buttons directly. The input current sits at 6 mA for reliable detection. Thus, the module presents a light load to your field devices.

Digital Output Features

The 32 output channels each provide 24V DC at 0.5 A maximum. Each output also includes a separate opto-isolator for protection. Consequently, a short on one output will not damage the processor. The output response time stays under 0.5 milliseconds. The ABB DTDX991A 61430001-UW can drive solenoids, relays, and indicator lamps easily.

Power and Energy Storage

The ABB DTDX991A 61430001-UW draws 250 mA from a 5V DC logic supply. Additionally, it requires 24V DC field power for the outputs. Hence, the logic power consumption equals just 1.25W. The two 100µF tantalum capacitors provide 10 milliseconds of hold-up time. This short backup protects I/O states during minor voltage sags. Furthermore, the module includes reverse polarity protection on its field power input.

Installation and Connectivity

You can mount the ABB on a standard DIN rail. Alternatively, secure it with M4 screws through its four corners. The two 37-pin D-sub connectors handle all input and output wiring. For reliable operation, use shielded cables for long signal runs. The ABB DTDX991A 61430001-UW works seamlessly with the RMS-TSG-TZ-C static trip unit.

Environmental Durability

This digital input/output module operates reliably from -20°C to +60°C. It also withstands 95% relative humidity without condensation. The module survives vibration up to 2g from 10 to 500 Hz. Therefore, the ABB DTDX991A 61430001-UW suits most industrial automation systems perfectly.

Details