You run various compressors or mechanical extruders in your process. Currently, your data historian and trending package samples at 1 minute scan rate or may be 5 sec scan rate. When a piece of equipment trips and shuts down, the console gets inundated with hundreds of alarms, such as (to name just a few for illustrative purpose):
DX3755 – Lube Oil Pressure LoLo Trip
DX3755 – Motor Speed LoLo Trip
DX3755 – Suction Pressure LoLo Trip
DX3755 – Bentley Nevada Monitor Vibrations HiHi
DX3755 – Multiple Surge Detected safety triggered shutdown The problem is that using a trending package scanning data at 1 minute or even 5 second scan rates, the precise identification of the first LoLo or HiHi trip logic that initiated the shutdown may be almost impossible to pinpoint. PiLogger can be configured to scan critical signals at fast scan rates like 0.1 second or even faster. PiLogger connect directly to a device, DCS or PLC using an OPC server communications system. PiLogger assists in identifying the “First Out” precisely and unambiguously. The “First Out” is defined as the process condition or a measured signal that triggered a shut-down sequence to stop the operation of some process equipment. The
shutdown may be triggered inside the DCS, the PLC or a triple redundant safety critical shutdown system.

For technical help and additional details on PiLogger, please contact PiControl Solutions Company via email at [email protected].