6-78
Stopping Acceleration and Deceleration (Acceleration/Deceleration
Ramp Hold)
The acceleration/deceleration ramp hold function stops acceleration and deceleration, stores the output fre-
quency at that point in time, and then continues operation.
Set one of the constants H1-01 to H1-10 (multi-function contact input terminal S3 to S12 function selection)
to A (acceleration/deceleration ramp hold) to stop acceleration and deceleration when the terminal is turned
ON and to store the output frequency at that point in time. Acceleration and deceleration will restart when the
terminal is turned OFF.
If d4-01 is set to 1 and the Acceleration/Deceleration Ramp Hold command is input, the output frequency is
still stored even after the power supply is turned OFF.
Related Constants
Time Chart
The time chart when using Acceleration/Deceleration Ramp Hold commands is given below.
Fig 6.51 Acceleration/Deceleration Ramp Hold
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vec-
tor
Open
Loop
Vector
2
d4-01
Frequency ref-
erence hold
function selec-
tion
Sets whether or not frequencies
on hold will be recorded.
0: Disabled (when operation is
stopped or the power is turned
on again starts at 0.)
1: Enabled (when operation is
stopped or the power is turned
on again starts at the previous
hold frequency.)
This function is available when
the multi-function inputs “accel/
decel Ramp Hold” or “up/down”
commands are set.
0 or 1 0 No A A A A A 298H
频率保持功能
Power supply
Forward/Stop
Acceleration/Deceleration
Ramp Hold
Frequency reference
Output frequency
Hold Hold
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