Dancer feedback speed control details
70
• The acceleration/deceleration time for the line speed command can be switched using the Acceleration/deceleration time
selection signals for line speed command (X105 and X106). For the X105 and X106 signals, assign the function by setting
"105 (X105)" or "106 (X106)" in any of
Pr.178 to Pr.189 (input terminal function selection)
.
NOTE
• Normally set "0" in
Pr.7 Acceleration time
and
Pr.8 Deceleration time
.
Line speed command acceleration/deceleration signal (Pr.621, Y237
signal, Y238 signal)
• The Y237 signal is output while the line speed command value increases.
• The Y238 signal is output while the line speed command value decreases.
• When using the Y237 and Y238 signals, refer to the following and assign the functions by
Pr.190 to Pr.196 (output
terminal function selection)
.
NOTE
• When the line speed signal value fluctuates while analog input, etc. is used for the command, the Y237/Y238 signal may
repeat ON/OFF.
Pr.621 Allowable deviation from target line speed
can be used to prevent the repetitive ON/OFF
operation.
• When the command value for the target line speed and the setting in
Pr.622 Line speed command for starting
are close to
each other, the line speed increases and decreases repeatedly and the Y237/Y238 signal may repeat ON/OFF.
Signal state
Acceleration/deceleration time
Acceleration/deceleration time
setting parameter
X105 signal
X106 signal
OFF
OFF
First acceleration/deceleration time
Pr.394
/
Pr.395
ON
OFF
Second acceleration/deceleration time
Pr.100
/
Pr.101
─
ON
Third acceleration/deceleration time
Pr.102
/
Pr.103
Output signal
Pr.190 to Pr.196 setting
Positive logic
Negative logic
Y237
237
337
Y238
238
338
Line speed command value
Acceleration time
for line speed command
Pr.394 (Pr.100
,
Pr.102)
Acceleration/deceleration
reference line speed command
(Pr.393)
Line speed command (m/min)
Deceleration time
for line speed command
Pr.395 (Pr.101
,
Pr.103)
Line speed command value
in consideration of
acceleration/deceleration
Time
Line speed command value
Y237
Y238
Line speed command (m/min)
Line speed command value
in consideration of
acceleration/deceleration
Time
ON
Pr.621
Pr.621
Pr.621
ON
Summary of Contents for A800 Plus Series
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