中文版
Description
The Enhanced Keyphasor module is an improved 3500 system module. It provides extended Keyphasor signal processing capabilities compared to previous designs, while maintaining full backward compatibility with existing Keyphasor modules in terms of form, fit, and function for use in legacy systems. The Keyphasor module PWA 125792-01 was completely replaced by the newer module 149369-01. When three-mode redundancy (TMR) applications require system key input, the 3500 system should use two key phase modules. In this configuration, modules work in parallel, providing primary and secondary Keyphasor signals to other modules in the rack. Systems with more than four key phase inputs can use a paired configuration if there are no more than four primary phase input signals. A paired configuration requires two consecutive monitoring positions in the upper/lower or two half-slot positions.
125720-01
The four Keyphasor modules will accept four primary input channels and four alternate input channels, and provide four output channels (one per module). Two paired and one unpaired configurations (three Keyphasormodules in total) are also possible. In this configuration, the user can configure a non-paired Keyphasor(order two 2-channel or one 1-channel and one 2-channel option). Isolated Keyphasor I/O modules are designed for applications where Keyphasor signals are connected in parallel to multiple devices and require isolation from other systems, such as control systems. The isolated I/O module is specifically designed for magnetic pickup applications, but it is compatible with and provides isolation for Proximitor* applications as long as an external power supply is provided. Note that the purpose of this I/O module is primarily to measure shaft speed, not phase. The module can provide phase measurement, but this I/O is slightly higher than the phase shift introduced by the non-isolated I/O version. Figure 1 shows the increased phase shift of the IsolatedI/O module at different machine speeds. Enhanced product features include the generation of once-per-turn event signals from multi-per-turn event inputs, field upgradable firmware, and asset management data reporting.
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