The ABB 6638716A1, also cataloged as the 6638716A1 Ribbon Cable, operates as a dedicated hardware component for internal data signal conduction within Infi 90 platforms. Configured for multi-channel intra-rack connection, this hardware component routes diagnostic and logic signals from the OIS20 MPM module to the PEP MCS CPU and diagnostic terminal nodes.

Hardware Specifications

Deterministic Routing and Backplane Integration

The multi-conductor layout of the 6638716A1 ribbon assembly matches the localized impedance parameters of the host rack processing architecture, protecting backplane bus communication velocity indexes from capacitive attenuation. The precise pin-to-trace mapping ensures that high-density diagnostic data frames transition from the MPM node to the MCS CPU without introducing transit delays or propagation skew. This structural cross-talk prevention allows surrounding hardware to sustain high-density I/O density scaling profiles across parallel processing cards without mutual interference.

Technical Circuit Queries

Q: Can this ribbon assembly be connected or extracted while the rack is powered?

A: No. Connecting or removing the 6638716A1 cable while the sub-rack is energized can ground active pins out of sequence, inducing hardware errors or damaging the bus termination chips on the attached MCS CPU.

Q: What prevents adjacent electromagnetic interference from distorting signals on this unshielded cable?

A: The conductor interleaving pattern grounds specified paths between parallel data lines. This layout creates an automated cross-talk suppression zone that stabilizes data packets under standard 60 V operating thresholds.

Q: How do physical bends affect the internal conductor pathways over time?

A: Exceeding the design bend radius strains the internal copper filaments and insulator walls. This increases circuit impedance and creates intermittent signal breaks that disrupt firmware flash compatibility cycles between diagnostic subsystems.

Field Configuration and Safety Guidelines

Route the ribbon assembly through dedicated internal plastic wire guides to isolate it from heavy AC power tracks and high-temperature areas inside the enclosure. Align the polarized connector tabs precisely with the socket notches on the OIS20 and CPU circuit cards to prevent pin misregistration during insertion. Ensure the operational environment remains within the 0 deg C to +60 deg C boundary to prevent the PVC insulation material from hardening or cracking over time.

Ordering Info

• 1 x ABB 6638716A1 Ribbon Communication Cable

• 1 x Integrated Polarized Header Connector Set

Dispatch Logistics and Packaging

Delivery time: 3-5 days when payment finish, routed via expedited international courier operations including DHL/FEDEX/UPS. All ribbon assemblies are placed inside anti-static industrial packaging sleeves to prevent static buildup and guard the termination connectors from structural deflection during transit.