LX80L Series Product Manual
32
Parker Hannifin Corporation
EMN Automation - Parker
Irwin, Pennsylvania
See the following example for calculating maximum deceleration for an application with a payload =
0.25 kg on an LX80-T02, 8 - Pole motor, double rail table with a maximum speed of 500 mm/s.
Total mass = 0.633 kg (Payload mass = 250 grams + Carriage mass (383 grams) = 633
grams)
Application Speed = 500mm/sec
Available peak force at .25 m/sec = 17.2 N (See Chapter 2,
Force / Speed Curve
)
Maximum Obtainable Deceleration Rate
Thus: F = ma
→
a = F/m
→
= 17.2N / 0.633kg
→
27.2 m/sec
2
Now, calculate the
Deceleration Distance
for linear deceleration:
First…
find the
Deceleration time
:
Ta = Max Velocity / Deceleration Rate
Ta = .50 m/sec / 27.2 m/sec
2
→
0.018 seconds
Second…
find the
Deceleration Distance
:
Distance = ((Max Velocity) * (Ta)) / 2
Distance = ((500 mm/sec) * (0.018)) / 2
→
4.5 mm
This means that both the positive and negative limit switch targets must be moved inward by 4.5
mm.
The limit deceleration rate should be set to 27.2 meters/sec
2
. Using the supplied limit trigger decal
sheet, change the location of the limit stickers (see “Adjusting the Limit Trigger Position” below).
Adjusting the Limit Trigger Position
The following procedure is to be used to adjust the activation position of the end of travel limits on
the LX80L.
Step 1
: Remove power from the unit and allow
time for the stage base and carriage to reach
room temperature.
Step 2
: Remove the main top cover, if supplied
from the stage by removing the four flat head
hex screws.
Step 3
: Remove main top cover exposing the trigger back-
ground decal and the trigger decals.
Note: Care should be taken to not misplace the main top cover
spacers.
Spacer
Summary of Contents for LX80L
Page 56: ......
