Description
‑ Power Supply：24 VDC，typical consumption 160 mA（LED included）
‑ Mechanical Structure：printed‑circuit termination board with multiple red‑type plug‑in connectors, cabinet‑mount installation；weight approx 0.26 kg
‑ On‑board Resources：signal terminal connectors, built‑in fuses, RS‑232‑C driving circuit, signal filtering components
‑ Communication Interface：two RS‑232‑C serial interfaces for logic station connection
‑ Galvanic Isolation：signal‑side and logic‑side galvanic isolation, isolation rating 2500 VAC
‑ Core Function：logic station signal termination, fuse over‑current protection, serial‑port physical interface conversion, signal filtering
‑ Protection：channel fuse over‑current protection, signal surge‑suppression
‑ Status LED Indicators：power indicator, communication status LED
‑ Weight：approx 0.26 kg
‑ Provides physical wiring termination for INFI‑90 logic operator station, realizes cable connection between logic station and DCS controller rack.
‑ Built‑in fuse protection for each signal channel, prevents field short‑circuit fault from spreading into controller internal circuit.
‑ Offers two RS‑232‑C serial channels, completes data transmission between logic station and DCS controller.
‑ Performs signal filtering processing, suppresses field electromagnetic interference and improves serial‑communication stability.
‑ Pure termination hardware without independent control logic; cannot run independently, must cooperate with logic station and INFI‑90 controller. NTLS01 belongs to legacy DCS hardware, only compatible with INFI‑90 / Symphony‑Harmony system.
‑ No on‑board self‑diagnosis CPU; fault status is fed back through station communication state and LED indication.
‑ No local historical‑data storage; communication‑abnormality information is read through DCS system or commissioning tool.
‑ Module hardware failure or blown fuse will cause logic station communication loss; DCS controller internal control logic still runs normally, but operator station cannot monitor and operate loop locally.
‑ Multiple plug‑in terminal connectors: connect logic station communication cables and power‑supply cables.
‑ RS‑232‑C serial channel: data exchange interface between termination unit and DCS controller.
‑ Mounting：cabinet‑internal fixed‑board installation
‑ Operating Temperature：‑20 ℃ ~ +60 ℃
‑ Storage Temperature：‑40 ℃ ~ +85 ℃
‑ Relative Humidity：5‑95 %RH, non‑condensing
‑ Protection Class：IP20, cabinet‑inside installation.
- NTLS01 logic station termination unit
Complementary parts: INFI‑90 logic operator station, INFI‑90 controller rack, serial communication cables, matching fuses.
‑ Cut off related power supply before installation or replacement. Pay attention to fuse specification, do not replace with over‑rated fuse.
‑ For spare‑part replacement: verify model NTLS01; after installation check power‑supply circuit, verify communication link between logic station and DCS controller. Wrong wiring or blown fuse will lead to station offline.
‑ Module fault will result in logic‑station signal termination and communication failure.
Thermal‑power plant, chemical‑plant legacy control system; ABB Bailey INFI‑90 / Symphony‑Harmony DCS; industrial spare‑part for logic‑station signal termination unit.
- INFI‑90 DCS dedicated NTLS01 logic station termination unit, undertakes logic‑station signal wiring termination, fuse protection and RS‑232‑C serial signal transmission function.
- Built‑in channel fuse protection, effectively isolates field short‑circuit fault.
- Signal filtering and galvanic‑isolation design, enhances anti‑interference capability for field‑cable communication.
- Plug‑in connector wiring, convenient for on‑site installation and maintenance replacement.
- Legacy discontinued DCS component, mainly applied for old‑system maintenance and retrofit projects.
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