Limit Of Acceleration Time/Deceleration Time - Mitsubishi Electric MELSEC iQ-R Series User Manual

Limit of acceleration time/deceleration time

The acceleration time and the deceleration time are limited by 8400 [s].
When "0: mcAccDec" is selected in the "acceleration/deceleration method setting" (Options bit 0 to 2) of the FB, the
acceleration time and the deceleration time calculated from the acceleration and the deceleration are limited. For a method of
calculating the acceleration time and the deceleration time, refer to the following.
Page 299 Acceleration/deceleration specification method
Operation
■At start
If the acceleration time or the deceleration time exceeds 8400 [s], the error "Acceleration Time Over at Start" (error code:
1A0FH) or the error "Deceleration Time Over at Start" (error code: 1A10H) will occur, and the axis will not startup.
■At control change
Limit of the acceleration time or the deceleration time may be exceeded when a velocity change, an acceleration change, or a
deceleration change is carried out. In this case, the warning "Acceleration Time Limit Over Warning" (warning code: 0D04H)
or the warning "Deceleration Time Limit Over Warning" (warning code: 0D05H) occurs, and the control change is not
accepted. The acceleration/deceleration operation before change is continued. When a control change is carried out during
acceleration or deceleration, time from the issuance of the control change instruction to the end of acceleration or
deceleration is limited.
■When the acceleration time/deceleration time is within one operation cycle
When the acceleration time or the deceleration time is less than one operation cycle due to the specified velocity,
acceleration, deceleration, and jerk, the speed reaches the target velocity within one operation cycle regardless of the jerk.
9 RELEVANT FUNCTIONS TO VELOCITY
310
9.1 Acceleration/deceleration Processing Function