ABB 200-OA8: Reliable 8-Channel Digital Output Module

This module provides eight isolated digital output channels. The ABB 200-OA8 supports both AC and DC load switching. You can connect solenoids, relays, and indicator lights directly. Its compact design saves valuable cabinet space.

Physical Dimensions and Mounting Details

The ABB 200-OA8 measures 12.2 cm in width. Its depth equals 14.5 cm including connectors. The unit weighs approximately 0.38 kg. A single green LED confirms backplane power status. Additionally, eight individual yellow LEDs show each channel’s on/off state.

Electrical Specifications and Energy Storage

Each output channel handles up to 0.5A continuously. The total module current rating reaches 4A maximum. Built‑in snubber circuits protect against inductive load spikes. Internal energy storage capacitors maintain output states briefly. This feature prevents false resets during short power dips.

Response Speed and Isolation Performance

Turn‑on time for each channel reaches just 0.5 ms. Turn‑off time also measures 0.5 ms typically. The ABB 200-OA8 provides 1500Vrms optical isolation. This isolation protects the controller from field wiring faults. Consequently, system reliability increases significantly.

Wiring and Installation Guidelines

A removable 20‑pin screw terminal block accepts 0.2‑2.5 mm² wires. The module draws only 180 mA from the 5V backplane. Maximum thermal dissipation stays below 1.5W. You can install this unit in any standard ABB I/O rack.