2.3.5 Setting the system parameters for a suspended robot
General
Initially the system is configured for mounting on the floor, without leaning. The
method for mounting the robot in a suspended position is basically the same as
for floor mounting.
Note
With suspended installation, make sure that the gantry or corresponding structure
is rigid enough to prevent unacceptable vibrations and deflections, so that
optimum performance can be achieved.
System parameters
If the robot is mounted at any other angle, the system parameter
Gravity Beta
must
be updated.
Gravity Beta
specifies the robot’s mounting angle expressed in radians.
Note
Gravity Beta
must be configured correctly so that the robot system can control
the movements in the best possible way. An incorrect definition of the mounting
angle (
Gravity Beta
) will result in:
•
Overloading the mechanical structure.
•
Lower path performance and path accuracy.
•
Some functions will not work properly, for example
Load Identification
and
Collision detection
.
Mounting angles and values
The parameter
Gravity Beta
specifies the robot’s mounting angle in radians. It is
calculated in the following way.
Gravity Beta
= A° x 3.141593/180 = B radians, where A is the mounting angle in
degrees and B is the mounting angle in radians.
Gravity Beta
Mounting angle (A°)
Example of position
0.000000 (Default)
0°
Floor (A)
0.261799
15°
Tilted (B)
3.141593
180°
Suspended (D)
Defining the parameter in the software
The value of the system parameter
Gravity Beta
must be redefined when changing
the mounting angle of the robot. The parameter belongs to the type
Robot
, in the
topic
Motion
.
How to calculate a new value is detailed in
Mounting angles and values on page 76
The parameter is described in
Technical reference manual - System parameters
.
Continues on next page
76
3HAC033453-001 Revision: H
© Copyright 2009-2013 ABB. All rights reserved.
2 Installation and commissioning
2.3.5 Setting the system parameters for a suspended robot
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