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Chapter 12 Expansion Control
[3] Speed control mode
Operation for speed control mode
The speed control is executed at speed set in "
Cd.140 Command speed at speed
control mode
" in the speed control mode. Set a positive value for forward rotation
and a negative value for reverse rotation. "
Cd.140 " can be changed any time
during speed control mode.
Acceleration/deceleration is a trapezoidal acceleration/deceleration processing.
Set acceleration/deceleration time toward "
Pr.8 Speed limit value" in " Cd.141
Acceleration time at speed control mode" and " Cd.142 Deceleration time at speed control
mode
". The value at speed control mode switching request is valid for " Cd.141 "
and "
Cd.142 ".
The command speed during speed control mode is limited with "
Pr.8 Speed limit
value
". If the speed exceeds speed limit value is set, a warning "Speed limit value
over" (warning code: 501) will occur, the operation is controlled with speed limit
value.
Confirm the command speed to servo amplifier with "
Md.122 Speed during
command".
Cd.142
Deceleration time at
speed control mode
0
t
V
0
20000 30000 -10000 -200000 0
Pr.8 Speed limit value
30000
20000
-10000
-20000
Pr.8 Speed limit value
Md.122
The command speed to servo amplifier is stored
in " Speed during command.
Cd.141
Acceleration time at
speed control mode
Cd.140
Command speed at
s
eed control mode
Cd.141
Acceleration time at
speed control mode
Cd.142
Deceleration time at
speed control mode
Current feed value during speed control mode
"
Md.20 Current feed value", " Md.21 Machine feed value" and " Md.101 Real current
value
" are updated even in speed control mode.
If the current feed value exceeds the software stroke limit, an error "Software
stroke limit +,
-
" (error code: 507, 508) will occur and the operation is switched to
position control mode. Invalidate the software stroke limit to execute one-way feed.
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