Description
Technical Specifications: Nominal power supply: 24 VDC Isolation voltage:1500 VAC Operating temperature:0 ℃ ~60 ℃ Storage temperature:-40 ℃ ~85 ℃ Humidity:5% ~95% non-condensing
Functional Features: Screw type wiring terminals for field cable termination. Built-in surge suppression circuit for each signal channel. Low-pass filter reduces high-frequency electromagnetic noise. LED power status indicator shows normal working status. Reserved test points allow technicians to verify signal value directly on terminal base. Galvanic isolation separates field side and system logic side. It supports hot swap of matched Ovation I/O cards.
Application Scenarios: Pressure and temperature transmitter signal collection, valve position feedback signal acquisition, pump and fan running status monitoring, chemical plant batch process control, thermal power plant boiler process parameter monitoring.
Performance Parameters: Terminal contact resistance less than 10 milliohm Signal bandwidth: DC to 10 kHz Surge withstand capability: 2kV common mode surge Vibration resistance:10 Hz ~150 Hz,0.5g Shock resistance:10g peak,11ms MTBF:210000 hours
Material Composition: Shell: UL94-V0 flame retardant plastic. Terminal screws: nickel-plated brass. PCB substrate: FR4 glass epoxy board. Filter capacitors and surge suppressors are soldered on printed circuit board. Mounting spring clip: stainless steel.
Structural Features: 35mm DIN rail snap installation. Front panel equipped with screw terminals and channel marking printing. Top card slot for I/O card insertion. Anti-reverse insertion positioning structure prevents mismatched card installation. Ventilation grooves on housing for passive heat dissipation.
Working Principle: Field instrument signals connect to screw terminals on terminal base. The terminal base supplies 24V DC loop power to field transmitters. The analog or discrete signal passes through filter circuit and surge protection circuit, then enters matched I/O card. The I/O card converts raw signal into digital value and uploads digital data to Ovation controller.
Installation Requirements: Mount on standard 35mm DIN rail. Leave 25mm clearance above and below module for heat dissipation. Use shielded twisted pair cable for field analog signal wiring. The shield layer implements single-point grounding at cabinet side. Terminal screw torque is controlled between 0.5 N·m and 0.7 N·m. Cut off power supply before wiring operation.
Precautions for Use: Do not short circuit signal terminals. Do not install in environment with conductive dust. Static protection must be adopted during maintenance work. Regularly inspect aging status of field wiring. Replace terminal base immediately if internal circuit damage occurs.
