Current Value Change - Mitsubishi Electric A1SD75P1-S3 User Manual

9 MAIN POSITIONING CONTROL

9.2.10 Current value change

When the current value is changed to a new value, control is carried out in which the
" Md.29 Current feed value" of the stopped axis is changed to a random address set
by the user. (The " Md.30 Machine feed value" is not changed when the current value
is changed.)
The two methods for changing the current value are shown below.
The current value change using method [1] is used during continuous positioning of
multiple blocks, etc.
(1) Current value change using the positioning data
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(1) Current value change using the positioning data
(2) Current value change using the start No. (No. 9003) for a current value
change
Operation chart
The following chart shows the operation timing for a current value change. The
" Md.29 Current feed value" is changed to the value set in " Da.5 Positioning
address/movement amount" when the positioning start signal turns ON.
Positioning start signal
[Y10,Y11,Y12]
Md.29 Current feed value
Restrictions
(1) An error "Current value change not possible" (error code: 515) will occur and
the operation cannot start if "continuous path control" is set in " Da.1
Operation pattern". ("Continuous path control" cannot be set in current value
change.)
(2) "Current value change" cannot be set in " Da.2 Control method" of the
positioning data when "continuous path control" has been set in " Da.1
Operation pattern" of the immediately prior positioning data. (For example, if
the operation pattern of positioning data No. 1 is "continuous path control",
"Current value change" cannot be set in positioning data No. 2.) An error
"Current value change not possible" (error code: 515) will occur and the
machine will carry out a deceleration stop if this type of setting is carried out.
(3) An error "Outside current value change" (error code: 514) will occur and the
operation cannot start if "degree" is set in " Pr.1 Unit setting" and the value
set in " Da.5 Positioning address/movement amount" is outside the setting
range.
(4) If the value set in " Da.5 Positioning address/movement amount" is outside
the software stroke limit ( Pr.13 , Pr.14 ) setting range, an error "start outside
stroke limit +/-" (error code: 507/508) will occur at the positioning start, and the
operation will not start.
ON
OFF
50000 0
Current value changes to the positioning
address designated by the positioning
data of the current value change
The above chart shows an example
when the positioning address is "0".
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MELSEC-A