ABB DSDP170 57160001-ADF Pulse Counting Board

The ABB DSDP170 57160001-ADF, also cataloged as the DSDP170 Pulse Counting Board, operates as a dedicated hardware component for high-speed pulse acquisition and position/speed signal processing within ABB MasterPiece and Advant OCS system platforms.

Hardware Specifications

Firmware Flash Compatibility and Deterministic I/O Processing

The DSDP170 pulse counting module processes incremental encoder signals up to 2.5 MHz directly through onboard hardware logic before delivering processed position and velocity registers to the main CPU across the system backplane. This architecture maintains strict firmware flash compatibility across ABB subrack frames while eliminating processing latency on deterministic backplane networks during high-density I/O scan cycles.

Frequently Asked Questions

Q: What grounding precautions must be observed for the 2.5 MHz high-speed pulse input lines?

A: Encoder and pulse input lines must use twisted-pair shielded cabling. The cable shield must be bonded to protective earth at a single entry point near the cabinet frame to prevent high-frequency noise interference.

Q: Can the DSDP170 board be extracted or inserted while the backplane bus is energized?

A: No. System power to the subrack card cage must be shut down prior to board removal or insertion to prevent backplane bus communication errors or electrical damage to edge connectors.

Field Installation Guidelines

1. Power down the subrack assembly and verify zero voltage across the backplane bus connections.
2. Align the DSDP170 circuit board with the designated subrack card guide slots and push firmly until the rear edge connectors fully seat into the backplane.
3. Tighten the front panel retaining screws to ensure low-impedance chassis grounding to the rack enclosure.
4. Connect pulse generator and encoder signals to the matching terminal block, ensuring input cables are segregated from AC power wiring.