MPRC086349-001 Power Board MPRC086406-502 ABB Original

The provided information details the capabilities and features of the REx 5xx terminals, particularly focusing on logic function blocks, protection, control, and monitoring functions. Here’s a breakdown:

1. User Configuration:
   • Users can utilize available logic function blocks to construct logic functions and configure the terminal to meet specific application requirements. While the basic algorithms for different functions cannot be altered, users can combine these functions with logic blocks to create custom application-specific functionality.
2. Inverter Function Block (INV):
   • The INV function block has one input and one output, with the output being the inverse ratio of the input. Input and output signals for this block are specified in tables 27 and 28 respectively.
3. OR Function Block (OR):
   • The OR function block is designed to create general combinatory expressions with boolean variables. It features six inputs and two outputs, one of which is inverted.
4. Testing Procedure:
   • The terminals include a feature to individually block single, multiple, or all functions, making the testing procedure more manageable. This feature allows users to monitor the activation or tripping of functions, ensuring correct functionality, and checking the configuration.
5. ZM Distance Protection Function:
   • This function provides fast and reliable protection for overhead lines and power cables in various power networks.
   • It offers continuous impedance measurement for each independent distance protection zone, separately measuring impedance in three phase-to-phase and three phase-to-earth measuring loops.
   • Phase-to-phase distance protection is suitable for basic protection against two- and three-phase faults, with independent setting of reach in the reactive and resistive directions for each zone.
   • Phase-to-earth distance protection serves as basic earth fault protection, with independent reactive reach setting to ensure high selectivity in networks with different protective relays for short circuit and earth-fault protection.

Overall, the REx 5xx terminals offer a range of configurable functions and features to meet diverse application needs, including protection, control, and monitoring functions. Users can leverage logic function blocks to tailor the terminal’s behavior according to specific requirements.