Mitsubishi Electric CR750-Q Instruction Manual page 365

M_LdFact
[Function]
The load ratio for each joint axis can be referenced.
[Format]
Example)<Numeric Variable>=M_LdFact(<Axis Number>)
[Terminology]
<Numeric Variable> The load ratio of each axis is substituted. The range is 0 to 100%.
<Axis Number>
[Reference Program]
1 Accel 100,100
2 *Label
3 Mov P1
4 Mov P2
5 If M_LdFact(2)>90 Then
6 Accel 50,50
7 M_SetAdl(2)=50
8 Else
9 Accel 100,100
10 EndIf
11 GoTo *Label
[Explanation]
(1) The load ratio of each axis can be referenced.
(2) The load ratio is derived from the current that flows to each axis motor and its flow time.
(3) The load ratio rises when the robot is operated with a heavy load in a severe posture for a long period of
time.
(4) When the load ratio reaches 100%, an overload error occurs. In the above example statement, once the
load ratio exceeds 90%, the acceleration/deceleration time is lowered to 50%.
(5) To lower the load ratio, measures, such as decreasing the acceleration/deceleration time, having the
robot standing by in natural posture, or shutting down the servo power supply, are effective.
(6) The initial value of the target mechanism number is "1". Therefore, when mechanism number 1 is tar-
geted, after executing the RelM command, or the program slot is other than 1, execution of the GetM
command is unnecessary. If target mechanism is other than 1, execute the GetM command beforehand.
[Related instructions]
Accel (Accelerate),
1 to 8, Specifies the axis number.
' Lower the overall deceleration time to 100%.
' Lower the acceleration/deceleration ratio to 50%.
' Furthermore, lower the acceleration/deceleration ratio of the J2 axis to
50%. (In actuality, 50% x 50% = 25%)
' Return the acceleration/deceleration time.
Ovrd (Override)
Detailed explanation of Robot Status Variable 4-345
4MELFA-BASIC V