[ABB] ABB PFEA113 Tension Controller Troubleshooting Guide

2026-11-05

In the modern paper, film, metal foil and other web processing industries, maintaining a constant strip tension is a core process requirement to ensure product quality and prevent strip breakage or deviation. As a high-end model in the tension controller family, ABB PFEA113 has pushed performance and functionality to new heights compared to the basic PFEA111/112: it supports up to four tension sensor inputs (A, B, C, D), provides six configurable analog outputs (AO1-AO6), natively supports Profibus DP communication, and has been deeply optimized for segmented roll applications.

[ABB] ABB PFEA111/112/122 Tension Controller Troubleshooting Guide

2026-11-05

In the modern paper, plastic film, metal foil and other web processing industries, maintaining a constant strip tension is the core process requirement to ensure product quality and prevent strip breakage or deviation. The ABB PFEA111/112/122 series tension controller boasts excellent stability and is based on the Presductor ® The unique measurement principle of technology has become the industry benchmark in this field. However, when facing complex on-site electromagnetic environments, mechanical installation deviations, and communication configuration errors, maintenance engineers often encounter problems such as zero drift, signal jumps, and even system alarms.

[ABB] ABB LS4000 laser analyzer

2026-11-05

Real time and accurate monitoring of gas composition under harsh working conditions such as high temperature, high pressure, and high dust has always been a challenging task for automation engineers in process industries such as chemical, power, and environmental protection. Traditional extraction gas analyzers require complex sampling and preprocessing systems, which not only have slow responses but also require significant maintenance. The ABB LS4000 diode laser analyzer has completely overturned this situation with its in situ measurement technology based on tunable diode laser absorption spectroscopy (TDLAS). It directly aligns the transmitting unit and receiving unit on both sides of the process pipeline or chimney, without the need for sample transmission, achieving millisecond level fast response and extremely high measurement accuracy.

[ABB] ABB SPAU 341 C Voltage Regulator Troubleshooting Guide

2026-11-05

In modern power distribution systems, On load Tap Changer (OLTC) is the core equipment for maintaining voltage stability in the power grid. As its' brain ', the performance of the voltage regulator directly determines the lifespan and power supply quality of the transformer tap changer. ABB SPAU 341 C is a classic digital voltage regulator widely used in various substations. Unlike traditional analog regulators, SPAU 341 C adopts a modular architecture (including automatic voltage regulation module SPCU 1D50 and manual voltage regulation module SPCN 1D56), with powerful self checking capabilities, rich communication interfaces, and complex parallel operation control logic.