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Entek IRD 6652 DSP Protection Monitor
Configuration
Understanding Vector Monitoring
The 6652 DSP can perform a type of vector monitoring. This function is not to be confused
with true eccentricity monitoring, as performed by the 6686 V2 monitor. Instead, the
6652 DSP monitors the difference between a reference amplitude-phase vector and the
current 1x amplitude-phase vector.
C is the current vibration vector (1 ips, 70°), R is the reference vector (0.6 ips, 30°) and D is
the difference vector (C-R, 0.65 ips, 285°). You can define the following:
l
The reference vector
l
The machine RPM range over which the 6652 DSP performs vector monitoring
l
Whether the 6652 DSP uses the second Danger alarm relay for each channel as an
vector (eccentricity) Danger alarm
Note:
In order for the 6652 DSP for vector monitoring, you must do the following:
l
Set the MON ECC option to +RELAY or -RELAY in the ECCNTRY submenu under
the Factory menu (page 30). If you set MON ECC to DISABLE, the 6652 DSP does not
perform vector monitoring.
l
Set TACHO to YES in the TX OK submenu under the Factory menu (page 30).
l
Connect a 1x tachometer input signal to the 6652 DSP monitor.
The 6652 DSP displays the current and reference vector parameters on the third display
page. The first set of values in the display is for channel 1. The second set is for channel 2.
You set the baseline vector using the options on the ECCNTRY submenu under the User
menu. You can capture the current vibration vector on channel 1 or channel 2 to be the
reference vector, or you can manually enter a reference vector. See “ECCNTRY submenu”
on page 18 for details.
C
R
D
ECCNTRY
3367RPM
O 4.6
D 2.4
MIL PP
-78.9
o
8.4
o
O 3.2
D 1.2
MIL PP
-63.4
o
1.4
o
RPM
The 1x machine speed
O
channel 1 current amplitude
D
channel 1 difference vector amplitude (current - reference)
MIL PP
channel 1 amplitude units
-78.9°
channel 1 current vector phase angle
8.4°
channel 1 difference vector phase angle (current - reference)
