ABB TU510 1SAP210800R0001 Bus Terminal Unit

The ABB TU510 1SAP210800R0001, also cataloged as the TU510 Bus Terminal Unit, operates as a dedicated hardware component for serial protocol interface termination and physical cable retention within ABB AC500 / S500 I/O platforms. The assembly routes field communication wiring through front-facing spring terminals and a standard D-Sub 9 connector directly to underlying bus interface modules.

Hardware Specifications

Backplane Bus Communication Velocity & I/O Density Scaling

The TU510 terminal unit establishes direct electrical paths to preserve backplane bus communication velocity across serial communication channels. Its mechanical layout optimizes cabinet I/O density scaling by combining serial protocol pinouts and spring-cage wiring blocks into a compact 67.5 mm width profile. Integrated grounding traces bypass high-frequency noise around internal communication lines, maintaining signal integrity and supporting firmware flash compatibility for attached communication interface modules.

Frequently Asked Questions

Q: Does the TU510 terminal unit require a separate supply voltage connection?

A: No. The unit acts as a passive physical terminal base and signal conductor, consuming 0 W of operating power.

Q: Can an S500 serial communication module be hot-swapped from the TU510 base?

A: Module insertion and extraction must be executed with power removed from the backplane to prevent transient signal disruptions or pin damage on the rear communication bus header.

Q: What conductor gauge range is compatible with the spring terminals?

A: Standard industrial solid or ferruled stranded copper conductors from 0.08 mm2 to 1.5 mm2 (AWG 28 to AWG 16) clamp securely into the spring-cage blocks.

Field Installation Guidelines

Follow these technical steps during assembly and field wiring:

1. DIN-Rail Mounting: Snap the TU510 base onto a grounded 35 mm DIN rail until the rear locking spring mechanism fully engages.
2. Earth Connection: Ensure the DIN rail surface is clean and unpainted to provide low-impedance bonding for the terminal unit rear grounding contact.
3. Wire Termination: Insert a flat-head screwdriver into the spring release actuator, push stripped wire conductors completely into the spring clamp opening, and release to secure.
4. Serial Interface Connection: Align the D-Sub 9 serial cable connector with the front port and tighten retaining screws to 0.4 N-m to maintain continuous shield grounding.