Configured for direct field wiring termination in AC250 automation systems, the ABB S200-TB2 (S200-TB2 Terminal Block) provides direct physical/electrical execution.

Cross-Reference & Part Identification

• Primary Model Number: S200-TB2
• Alternative Part Number: 490176062
• Legacy Substitute Model: 200-TB2
• Chassis Compatibility: AC250 / S200 I/O Expansion System
• Application Framework: Removable terminal base for 120 VAC and 5 VDC I/O signal routing

Electrical & Environmental Data

Module Bus Velocity & Hardware Density

The S200-TB2 terminal base facilitates high-speed backplane bus communication velocity across connected I/O hardware slices. Designed to maintain structural alignment within high I/O density scaling configurations, the unit ensures signal integrity during deterministic logic processing and maintains firmware flash compatibility across matching control processors.

Delivery Package

• 1 x ABB S200-TB2 Terminal Block Unit
• 1 x Field Wiring Marking Strip Assembly

Terminal Assembly & Panel Wiring Rules

• DIN Rail Engagement: Snap the terminal base securely onto a standard 35 mm DIN rail prior to inserting the corresponding I/O module.
• Torque Rating: Tighten field wire clamping screws to 0.6 N-m to 0.8 N-m to guarantee secure physical contact without stripping threads.
• Cable Shielding: Terminate overall cable shields directly to an isolated grounding bar located adjacent to the terminal assembly base.
• Live Insertion Rules: Ensure field power supply loops are de-energized before removing or installing field wiring terminal strips.

Frequently Asked Questions

• What primary field voltage and current ratings apply to the S200-TB2 terminal block?

  The terminal block supports a maximum field voltage rating of 120 VAC with a maximum current loading capacity of 10 A across terminals.

• What internal backplane logic current draw is associated with this base unit?

  The internal backplane bus interface draws up to 640 mA at 5 VDC when populated with an operational I/O module.

• Can the I/O module be hot-swapped while leaving the S200-TB2 terminal block mounted?

  Yes, the module can be unlatched and replaced from the terminal base, provided field load power is isolated to prevent arcing.

• Is the S200-TB2 terminal block backward compatible with older 200-TB2 base units?

  The S200-TB2 serves as a direct functional replacement for legacy 200-TB2 terminal bases with identical mounting dimensions.

• What gauge of field wiring conductors can be terminated in the screw clamp blocks?

  The terminal screws accept solid or stranded copper conductors ranging from 22 AWG up to 12 AWG rated for at least 75 deg C.

• Does the base unit require a separate ground connection for internal signal shielding?

  Yes, ensure the ground tab on the base establishes direct physical contact with a clean, unpainted DIN rail surface.

• How is keying configured between the S200-TB2 base and the plugged I/O module?

  The base features a mechanical keying dial that must be set to match the specific slot requirement of the target module type.

• What physical dimensions must be planned for panel mounting clearance?

  The unit footprint requires an estimated installation clearance of 9.8 cm in length, 9.5 cm in width, and 5.8 cm in depth.