Rockwell Automation 1441-PEN25-Z Enpac 2500 Data Collector - Manual (Page 212)

212 Rockwell Automation Publication GMSI10-UM002D-EN-E - August 2012
Chapter 8 Balancing Application
Length Units Sets the units used in measuring the distance between the shaft and
the weight. Options:
mm
cm
m
inch (default)
feet
EU
Movement 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 machines normal rotation.
If Movement is set to `Against Rotn,‘ angles are measured from the
reference mark, in the opposite direction of the machines normal
rotation. Options:
With Rotn
Against Rotn (default)
Trigger Type Sets the trigger source.
• ext Analog - An external analog trigger will be used to trigger data
sampling. You must also set the slope and trigger level.
• ext TTL - The signature acquisition process begins when a TTL
trigger is applied. A TTL trigger in the range 2.5 V to 5 V will begin
signature acquisition. You must also select the slope.
• Laser Tach - Enables the internal Laser Tachometer.
Options:
ext Analog
ext TTL (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. Options:
-ve
+ve (default)
This parameter is applicable only when Trigger
Type is set to `ext Analog‘ or `ext TTL.‘
Trigger Level Enter the amplitude level for externally triggering the measurement. volts
This parameter is used only when Trigger Type is
set to `ext. Analog.‘
Table 42 - Balance Setup Parameters
Parameter Name Description Values/Comments