Description
Honeywell FTA-T-02
Technical Specifications Multi-channel analog signal termination; support RTD resistance signal and 4-20mA current signal; terminal rated voltage 30VDC; built-in passive RC signal filter; on-board overvoltage transient suppression components; operating temperature 0℃ to 60℃; storage temperature -40℃ to 85℃; humidity 5% to 95% non-condensing; DIN rail mounting structure.
Functional Features It collects multiple field analog instrument cables to standard screw terminals. It filters high-frequency interference noise superimposed on analog measurement lines. It suppresses transient voltage surge from field wiring. It transmits filtered signals to upper I/O modules through dedicated connection cable. It has clear channel marking to reduce wiring error during commissioning and maintenance. It supports channel-by-channel isolation for selected signal types.
Application Scenarios RTD temperature signal termination for chemical plant control cabinets; 4-20mA transmitter wiring junction in safety instrumented system cabinets; field termination for small remote I/O boxes; spare replacement termination unit for Honeywell legacy I/O systems.
Performance Parameters Passive filter has fixed cutoff frequency suitable for slow-changing process measurement signals; transient suppression response time is nanosecond level; terminal contact resistance is stable under vibration; filter attenuation will not cause obvious signal delay for conventional control loops.
Material Composition Base shell is flame retardant PC plastic; internal PCB uses FR4 substrate; terminal conductive parts are tin-plated copper; filter components are industrial grade resistors and capacitors; metal DIN rail clip is zinc-plated steel.
Structural Characteristics Compact rectangular DIN rail mount housing; front side with numbered screw terminals and channel type labels; internal pin header for connecting ribbon cable to I/O module; snap-on rail mounting structure for quick installation and removal.
Working Principle Field analog signals enter the FTA terminal blocks. Signals pass through built-in RC filter and surge suppression components, then transmit to the upper I/O acquisition module via the internal flat cable. The passive circuit only performs noise filtering and surge clamping without signal amplification or conversion.
Installation Requirements Snap the FTA onto standard 35mm DIN rail inside control cabinet. Tighten terminal screws with specified torque. Separate analog signal wiring and power wiring in different cable ducts. Use shielded twisted pair for RTD and 4-20mA field instruments. Ensure cabinet protective ground connection.
Usage Notes Do not connect AC high voltage signal to analog terminals. Confirm signal type matches FTA-T-02 applicable range before wiring. Do not modify internal filter circuit components on site. Check terminal tightness regularly to prevent poor contact.
