Rockwell Automation 1441-DYN25-MBAL Balancing Extension Module for the Dynamix 2500 - Manual (Page 23)

Rockwell Automation Publication 1441-UM004A-EN-P - May 2011 23
Balancing Extension Module Chapter 2
Length Units Specifies the units of measurement used for measuring the
radius of the weight placement (from the shaft center to the
position of the weight).
You can use this information when you have the data collector
to estimate the trial weight for you.
mm
cm
m
inch (default)
feet
EU
Movement Specify your weight angle placement convention, either With
Rotation or Against Rotation. During a balancing procedure,
when weight angle placements are specified, this setting
determines their direction from the zero reference point.
You place weights on the rotor to balance the machine. The
position of this weight is given in degrees or positions (where
the total number of positions equals the number of blades or
vanes) from the reference notch or mark. You must select
whether you are measuring the angle with or against the
direction of the shaft rotation.
The Movement parameter affects how the angles are
measured. If Movement is set to "With Rotn," angles are
measured from the reference mark, in the direction of the
machine’s normal rotation.
If Movement is set to "Against Rotn," angles are measured from
the reference mark, in the opposite direction of the machine’s
normal rotation.
With Rotn
Against Rotn (default)
Trigger Type Sets the trigger source:
• External Analog - An external trigger will be used to trigger
data sampling. You must also set the slope and trigger
level.
• Laser Tach - Enables the internal Laser Tachometer new
firmware and ext modules coming soon check SKF to
confirm this function. should be fixed
Ext Analog (default)
Laser Tach
Ext trig slope Sets the slope for externally triggering the measurement.
Slope is the direction in which the signal is moving, and is
either positive (rising) or negative (falling) before a trigger is
detected.
This parameter is applicable only when Trigger Type is set to
ext Analog or ext TTL.
-ve
+ve (default)
Trigger Level Amplitude level for the external trigger the measurement.
Enter the number of volts to eliminate noise, which may cause
false triggering.
This is applicable only for external analog trigger type
measurements.
volts
2 V (default)
Vib. Threshold The acceptable imbalance level you are trying to achieve. If the
vibration magnitude is greater than this threshold, the
magnitude bar is colored red when taking a reading. The bar
turns green when the selected level of imbalance is achieved. 1.00 EU (default)
Filter Sets the high pass filter to. apply to the measurement.
The high pass filter is useful in removing high vibration, low
frequency signal components, which can dominate the signal.
Off
2 Hz (default)
10 Hz
Table 2 - Balance Extension Module Parameters
Parameter Description Value