Outline - Omron K7DD User Manual

1 Overview
1-1

Outline

What is the K7DD?
The K7DD is a condition
monitoring device to support
condition monitoring and error
diagnosis of a rotation
mechanism, such as
servomotors.
The Unit measures voltage and
current from the power lines of
the rotation mechanism,
converting them to various
features such as power and
harmonics. It can thus capture
mechanical errors that occur on
the rotation mechanism.
K7DD Support Tool is also
available to assist for more
accurate condition monitoring and
error diagnosis. This tool enables
more detailed setting of
measurement timing and automatic calculation of alarm thresholds for feature values by automatically
extracting features that correlate with relevant errors from among a variety of features.
Error Detection Mechanism of the K7DD
When a rotation mechanism
operates, such as when cutting
with an end mill, a load is applied
to the mechanism due to friction.
The effect of the load will then
appear in the electrical signal of
the power lines.
To analyze the effect of the load, it
is necessary to observe the
fluctuations of electrical signals
from various aspects, such as
R.M.S. value of power lines,
frequencies, and power factors.
The K7DD captures errors in
rotation mechanisms by simultaneously processing high-speed sensing and high-speed parameter
conversion of fluctuations of electrical signals appearing on the power lines.
1 - 2
3-phase 3-wire power supply
Voltage
measurement
Current
measurement
Condition monitoring is possible not only for rotation
mechanisms such as servo motors, but also for
non-rotating applications such as solenoid valves.
Normal operation
Abnormal operation
Power Line Data Generator User's Manual (N233)
RS-485-Ethernet
K7DD
Communications
converter
AGE ALM
Ethernet
RS-485
Voltage feature
Normal data
Voltage feature
Abnormal data
K7DD
Support
Tool