Description
METSO A413665
Technical Specifications: 8-channel HART analog input; 4-20mA current signal; HART protocol communication; 16-bit ADC conversion; channel electrical isolation; backplane 24VDC power supply; rack plug-in installation; operating temperature range 0℃ to +55℃; each channel LED indicator; protection class IP20.
Functional Features: Collect 4-20mA measurement signal; read HART digital data from smart transmitter; loop break detection; single-channel fault isolation; module hardware self-diagnosis; upload process value and instrument diagnostic information to DCS system.
Application Scenarios: HART smart transmitter collection cabinet in chemical plant; boiler pressure and flow instrument cabinet in thermal power plant; smart field instrument monitoring cabinet in pulp and paper factory; HART instrument control cabinet in water treatment plant.
Performance Parameters: Analog measurement accuracy ±0.12% full scale; stable HART digital communication; low long-term zero drift; meet industrial EMC electromagnetic compatibility standards; support 7×24 hours uninterrupted continuous operation.
Material Composition: Glass fiber epoxy multilayer PCB circuit board; high-precision ADC chip; HART communication chip; photoelectric isolation components; gold-plated edge connector; metal front panel; circuit board coated with three-proof protective coating.
Structural Features: Rack plug-in modular structure; front panel equipped with LED indicators for power, running and channel fault status; rear gold-plated edge connector connects to DCS rack backplane bus; analog HART circuit and system logic circuit are physically separated; panel fitted with mechanical locking buckle.
Working Principle: HART smart transmitter outputs 4-20mA analog signal with superimposed HART digital signal. The signal is transmitted to A413665 module through supporting terminal base. The module extracts analog process value and decodes HART digital information. All data is uploaded to DCS controller through backplane bus. The module detects loop fault and uploads instrument diagnostic alarm.
Installation Requirements: Install in designated slot of Metso DNA I/O rack and match with original HART terminal base. Use HART dedicated twisted shielded cable. Shield layer adopts single-point grounding. Ensure loop resistance meets HART communication requirement. Cabinet protective grounding terminal must be connected reliably.
Precautions for Use: Check loop resistance before power on to guarantee HART communication quality. Cut off instrument loop power before wiring. Do not access high voltage signal to input channel. Cut off rack backplane power before module disassembly. Check terminal tightness regularly. Keep cabinet humidity stable without condensation.
