Mitsubishi A1SD75P1-S3, Руководство пользователя

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12 - 48
MELSEC-A
12 CONTROL AUXILIARY FUNCTIONS
12.5.4 Torque change function
The "torque change function" is used to change the torque limit value during torque
limiting.
The torque limit value during torque limiting is normally the value set in the " Pr.18
Torque limit setting value" that was previously set in the parameters. However, by
setting the new torque limit value in the positioning data " Cd.30 New torque value",
and writing it to the AD75, the torque generated by the servomotor during control can
be limited with the new torque value.
(The " Cd.30 New torque value" is validated when written to the AD75.)
The details shown below explain about the "control torque change function".
(1) Control details
(2) Precautions during control
(3) Setting the torque change function start signal
(1) Control details
The following drawing shows the torque change operation.
50% 100%
0%
Torque is limited by the torque
limit setting value (50%) of the
parameters.
Various operations
PLC READY signal [Y1D]
25%
0%
OFF
ON
V
t
Pr.18 Torque limit setting value
Cd.30 New torque value
Md.45 Torque limit stored value
50%
100%
Torque is limited by the torque
limit setting value (25%) of the
axis control data.
25%
25%
Fig. 12.30 Torque change operation
(2) Precautions during control
(a) If a value besides "0" is set in the " Cd.30 New torque value", the torque
generated by the servomotor will be limited by that value. To limit the torque
with the value set in " Pr.18 Torque limit setting value", set the " Cd.30
New torque value" to "0".
(b) The " Cd.30 New torque value" is validated when written to the AD75.
(c) If the setting value is outside the setting range, a warning "Outside torque
change value range" (warning code: 113) will occur and the torque will not
be changed.
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