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TU616 ABB I/O Terminal UnitTU616 ABB I/O Terminal UnitTU616 ABB I/O Terminal Unit
TU616 ABB I/O Terminal Unit
TU616 ABB I/O Terminal Unit
TU616 ABB I/O Terminal Unit

TU616 ABB I/O Terminal Unit


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PRODUCT SKU : TU616

PRODUCT TYPE : I/O Terminal Units

PRODUCT VENDOR : ABB


  • 100% Genuine Parts – Risk-Free 30-Day Returns
  • 1-Year Warranty & Expert Support for Every Order

Product Details

Configured for digital and analog 24 VDC signal routing in S600 and S500 platforms, the ABB TU616 (TU616 I/O Terminal Unit) provides direct physical/electrical execution. The hardware assembly terminates field instrument conductors via tool-free spring terminals, establishing electrical connectivity to underlying system backplane buses.

Hardware Specifications

Parameter Specification
Model TU616
Brand ABB
Origin Global Manufacturing Facilities
Weight 0.17 kg
Dimensions 67.5 mm x 40 mm x 135 mm
Operating Temp -20 deg C to +60 deg C
Power Consumption Passive component (0 W)
Signal Compatibility 24 VDC Digital and Analog
Terminal Type Spring-cage terminals
Mounting Type DIN-rail or direct panel mounting
System Compatibility ABB S600 and S500 I/O Systems

Backplane Bus Communication Velocity & I/O Density Scaling

The TU616 terminal unit preserves backplane bus communication velocity across high-density I/O configurations. Designed for compact panel layouts, the unit optimizes cabinet I/O density scaling by securing 24 VDC digital and analog field wiring within a 67.5 mm footprint. Integrated internal routing paths mitigate cross-talk and field noise interference, ensuring consistent signal transmission to processing modules while maintaining broad firmware flash compatibility across attached controller platforms.

Frequently Asked Questions

Q: Does the TU616 terminal unit consume electrical power from the backplane?

A: No. The TU616 functions as a passive physical wiring base and terminal interface, operating at 0 W power consumption.

Q: Can I/O modules attached to the TU616 base be hot-swapped during live loop operation?

A: System power and 24 VDC field supply lines must be isolated prior to plugging or unplugging I/O modules to prevent contact arcing or signal spikes on the backplane.

Q: What mounting configurations does the TU616 chassis support?

A: The terminal base mounts directly to standard 35 mm DIN rails or can be secured using direct panel-mount fasteners.

Field Installation Guidelines

Execute the following installation procedures during cabinet assembly:

  1. Mechanical Mounting: Snap the TU616 base firmly onto the 35 mm DIN rail or fasten to the panel backplate using appropriate mounting hardware.
  2. Grounding Validation: Ensure the DIN rail or metal surface is properly bonded to the protective earthing (PE) bus bar to establish continuous ground return paths.
  3. Wire Termination: Insert stripped field wires directly into the spring-cage terminals. Depress the spring mechanism using a standard screwdriver only when releasing locked conductors.
  4. Strain Relief & Routing: Group incoming 24 VDC field cables and secure them using cable ties to prevent mechanical strain on terminal connection points.

Additional Information

  • 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
  • 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
  • 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
  • Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
  • Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
  • Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.




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