Each Keyphasor Module
accepts up to two transducer
signals from proximity probe
transducers or magnetic
pickups. The input signal
range is +0.8 V to -21.0 V
(NonIsolated I/O modules) or
+5V to -11V (Isolated I/O
modules). Signals exceeding
this range are limited
internally by the module.
Passive magnetic pickups
require a shaft rotative speed
greater than 200 rpm (3.3 Hz).
Description:
The 3500/25 Enhanced Keyphasor Module is a half-height,
two-channel module used to provide Keyphasor signals to
the monitor modules in a 3500 rack. The module receives
input signals from proximity probes or magnetic pickups and
converts the signals to digital Keyphasor signals that indicate
when the Keyphasor mark on the shaft coincides with the
Keyphasor transducer. The 3500 Machinery Protection
System can accept up to four Keyphasor signals for normal
configuration and up to eight Keyphasor signals in a paired
configuration.
Keyphasor signal is a once-per-turn or multipleevent-per-turn
pulse from a rotating shaft or gear
used to provide a precise timing measurement. This
allows 3500 monitor modules and external
diagnostic equipment to measure shaft rotative
speed and vector parameters such as 1X vibration
amplitude and phase.
The Enhanced Keyphasor Module is an improved 3500
system module. It offers expanded Keyphasor signal
processing capabilities over the previous design while
maintaining complete downward-compatibility in terms of
form, fit and function with existing Keyphasor modules for use
in legacy systems. The Keyphasor module, PWA 125792-01, is
completely replaced by the updated 149369-01 module.
When a system Keyphasor input is required for Triple Modular
Redundant (TMR) applications, the 3500 system should
employ two Keyphasor modules. In this configuration, the
modules work in parallel to provide both a primary and
secondary Keyphasor signal to the other modules in the rack.
Shipping Port: China
Payment: Bank of Chicago, Bank of Singapore
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Service: Professional Sales provides 24 hours /7 days online service
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