1. Core Technical Parameters

Operating Power：24 VDC

Terminal Port Count：32 signal screw terminals

Matching Module Series：S800 extended I/O card

Permitted Cable Cross-section：0.5–2.5 mm²

Withstand Dielectric Voltage：2000 VAC

Working Temperature Range：-20℃ ~ +70℃

Mounting Specification：DIN rail TS35 + S800 backplane buckle

2. Compatibility & Expandability

Same-brand Compatibility

ABB TU848 is an extended terminal unit tailored for high-channel ABB S800 I/O modules. On-site wiring technicians install multiple ABB TU848 on DSBB backplanes to centralize massive field sensor and actuator wiring inside process control cabinets. ABB TU848 locks firmly beneath 32-channel AI/AO/DI/DO modules and transmits 24V field signals without extra intermediate terminal strips. Robust mechanical lock structure maintains stable contact performance when ABB TU848 operates alongside all ABB AC800M system control hardware on production sites.

Cross-brand Compatibility

Unique S800 backplane buckle structure prevents direct physical assembly of ABB TU848 onto third-party PLC racks. Auxiliary transfer terminal adapters are mandatory to connect ABB TU848 with Siemens and Schneider I/O hardware. Universal screw wiring design enables ABB TU848 to connect standard 24V third-party field instruments without structural modification inside the terminal base.

3. Lifecycle Cost Analysis

Service cycle of ABB TU848 is set as 10 years, exchange rate:1USD=7.2CNY, purchase and installation fees are excluded from all cost accounting

Annual routine maintenance cost: Terminal torque inspection and internal dust clearance for ABB TU848 costs 20 USD per year, total 10-year maintenance expense: 200 USD

Spare part replacement cost: Spring terminal elastic fatigue failure of ABB TU848 generally appears once every 9 years, single spare terminal base price: 210 USD, total replacement expense within 10 years: 210 USD

Retrofit expense saving: Existing field signal cable harness fully fits ABB TU848 during cabinet upgrade reconstruction, saving 135 USD extra wiring labor cost compared with incompatible substitute terminal units

Total cumulative running cost for single ABB TU848 over its 10-year service cycle: 275 USD