Rockwell Automation Allen-Bradley LDAT-S03 Series, Руководство пользователя

Страница: 47 / 76

Rockwell Automation Publication LDAT-UM001A-EN-P - April 2016 47
Commission Chapter 4
Software overtravel limits are preferred for these reasons.
• Hard-wired overtravel limit switches are typically in a position that does
not let the linear stage decelerate before mechanical damage occurs.
• Software overtravel limit switches can be precisely set, based on
maximum speed and load inertia. The stage comes to a complete stop
before physical damage occurs.
In addition to software overtravel limits, the end of travel bumpers for the
linear stage can stop the carriage up to the ratings listed in this table.
Table 9 - Bumper Stop Energy Limits for Linear Thruster End of Travel
To calculate kinetic energy of the carriage with your payload, use the formula:
J = energy in Joules
M = mass in motion (slider
(1)
+ payload) [kg]
V = maximum velocity of stage in your application [m/s]
(1)
Slider Moving Mass
Cat. No. Energy Limit J
(in•lb)
Cat. No. Energy Limit J
(in•lb)
LDAT-S03
xxxx
2.5 (22.48) LDAT-S10
xxxx
8.19 (72.50)
LDAT-S05
xxxx
LDAT-S15
xxxx
19.2 (170.00)
LDAT-S07
xxxx
ATTENTION: If energy greater than the bumper capacity is anticipated in the
application, provide extra mechanical means for safely stopping the slider.
ATTENTION:
(1) See Slider Moving Mass on page 47
Table 10 - Slider Moving Mass Frame 30
LDAT Cat. No. Slider Moving Mass
kg (lb)
LDAT Cat. No. Slider Moving Mass
kg (lb)
LDAT-S031010-xxx 2.8 (6.23) LDAT-S032030-xxx 4.6 (10.23)
LDAT-S031020-xxx 3.4 (7.56) LDAT-S032040-xxx 5.2 (11.57)
LDAT-S031030-xxx 4.0 (8.90) LDAT-S033010-xxx 4.0 (8.90)
LDAT-S031040-xxx 4.6 (10.23) LDAT-S033020-xxx 4.6 (10.23)
LDAT-S032010-xxx 3.4 (7.56) LDAT-S033030-xxx 5.2 (11.57)
LDAT-S032020-xxx 4.0 (8.90) LDAT-S033040-xxx 5.9 (12.91)
J
1
2
--- M
×
V
2 ×
=
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