Description
METSO D100789
Technical Specifications: Rated input 24 VDC from rack backplane; maximum output load current 30 A normal operation, short‑term 60 A within 10 seconds; support Modbus RTU and Profinet communication protocols; 4‑channel digital input, 2‑channel 4‑20 mA analog input; two encoder signal interfaces; rack plug‑in installation; operating temperature range 0 ℃‑+55 ℃; protection class IP20.
Functional Features: Rack internal multi‑channel power distribution management; sequential power‑on control for each functional slot; real‑time monitoring for voltage and current of each power branch; hardware over‑current and over‑voltage protection; branch‑level fault isolation; module self‑diagnosis; upload power‑supply abnormal alarm to DCS monitoring system; support remote status reading through industrial bus.
Application Scenarios: Metso Damatic XD main control rack; thermal power plant auxiliary equipment DCS cabinet; pulp and paper mill core process control cabinet; chemical plant safety interlock control cabinet; mineral processing central control rack.
Performance Parameters: Fast fault response speed for power branch; low power consumption under standby state; stable long‑time running performance; satisfy industrial EMC anti‑interference requirement; support 7×24 hours continuous operation.
Material Composition: Fiberglass epoxy multilayer printed circuit board; high‑precision current sampling chip; power‑switch semiconductor components; gold‑plated backplane edge connector; metal front baffle; circuit‑board surface covered with three‑proof conformal coating.
Structural Features: Standard rack plug‑in card‑type structure; front panel integrates LED indicators for power supply, running status and each branch fault; rear gold‑plated connector mates with rack backplane bus; internal high‑power circuit and signal circuit realize physical separation; front panel fitted with mechanical anti‑loose locking buckle to prevent loosening caused by vibration.
Working Principle: 24 VDC power from rack power supply enters D100789 module via backplane connector. Internal power management unit distributes power to each slot of backplane according to preset power‑on sequence. Sampling circuit continuously detects voltage and current value of each power branch. Once over‑current, over‑voltage or short‑circuit fault is detected, corresponding branch protection triggers, fault indicator lights up and alarm information transmits to DCS host through system bus.
Installation Requirements: Insert module into designated dedicated slot of Metso Damatic XD rack. Guarantee rear connector fully engaged with backplane. Cabinet protective grounding terminal must realize reliable connection. Reserve enough surrounding space for ventilation and heat dissipation. Do not occupy other functional module installation slots.
Precautions for Use: Cut off rack total power supply before plugging and removing module. Wear anti‑static wrist strap during maintenance operation. Do not modify internal circuit of module arbitrarily. Inspect backplane connector contact status periodically. Prevent conductive dust accumulation inside rack. Avoid cabinet internal condensation phenomenon.
