Mitsubishi Electric MELSEC-F Series User Manual page 47

FX -1PG User's Manual
3U
3. Update time for the operation speed change value
After the operation speed change value is updated, the time required until the operation speed changes is as
follows.
• During operation at 1 kHz or higher: Within 3 ms
• During operation at less than 1 kHz: Within 3 pulses
Cautions when the operation speed change function is used
• In the following conditions, writing a value to the operation speed change value does not validate the
operation speed change. No error will occur either.
- During deceleration by the STOP command (STOP, forward limit, reverse limit)
- During deceleration and stopping of the positioning operation
- Operation that the operation speed change function cannot be used
- During use of the approximate S-shaped acceleration/deceleration function
- In JOG operation inching movement
- During remaining distance operation waiting (remaining distance operation is cancelled)
- After interrupt input detection of the interrupt stop operation
• When the value set for the speed change value is larger than the maximum speed, the operation will be
executed in the maximum speed. When the value set for the speed change value is at the bias speed or
smaller, the operation will be executed at the bias speed. However, if the bias speed is 0, the operation is
executed at 1 Hz.
• When the value set for the speed change value is at the creep speed or smaller, the operation will be
executed at the creep speed. (In DOG type mechanical zero return operation)
• If the travel time is shorter than the required acceleration/deceleration time, the operation speed set by the
speed change value cannot be reached.
Speed
Actual operation
Operation speed
before change
Time required for acceleration/deceleration
Operation speed
after change
speed
Travel time
6 Before Starting Positioning Operation
6.6 Operation Speed Change Function
Time
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