Original Assignee Siemens Power Generations Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor Satish Gadde Christopher Humphrey Stefan Schneider Fadi Tadros Jatinder Singh Current Assignee (The listed assignees may be inaccurate.
Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active, expires Application number US10/928,524 Other versions US20060042258A1
#Siemens generator alarm. code 1100 pdf
Google Patents Method of controlling a power generation systemĭownload PDF Info Publication number US7269953B2 US7269953B2 US10/928,524 US92852404A US7269953B2 US 7269953 B2 US7269953 B2 US 7269953B2 US 92852404 A US92852404 A US 92852404A US 7269953 B2 US7269953 B2 US 7269953B2 Authority US United States Prior art keywords temperature turbine controlling load corrected Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US7269953B2 - Method of controlling a power generation system
Alarms starts from number 1 and continues, so it’s no use to have an offset among alarms and bits.The first bit of the word alarm has been chosen as “no active alarms” because usually: The last part is a recap of all alarms, really useful while debuggin because you can notice instantly what’s going on just by watching 1 segment. This because even if you reset all the alarms pushing the reset button, if one fault condition is active, the alarm will be setted again few segments later, resulting in a still active alarm at the end of the program. When writing alarms in this way the first segment must be always the reset block. This is a basic sample on how i write an alarm block: When i write alarms and interlocks i always use the same structure, that consists in many words where every bit corresponds to an alarm this structure is almost a standard for many operators panel and has many good points but some drawbacks too (a drawback is that you can analize block of alarms comparing and masking entire words, that can be cheaper to write, but harder to understand when reading or debugging). Interlocked equipment, like motors or valves, is an equipment that has a protection circuit (real or logic) that interdicts the activation of the equipment if at least one danger condition is met. What is an AlarmĪn alarm is a condition of non-safe state of the machine.ĭepending on the impact on the process, it can be:Īn alarm can be connected to an input sensor, but it’s never the sensor itself alarms are generally stored in words (16-bits registers) and displayed in the HMI, as well as used in the program as conditions to grant the safeness of the process. While analizing the process that you have to automate you always have many conditions to respect for the safeness of the equipments, of the operators and of the process itself.
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