Stopping Acceleration And Deceleration (Acceleration/Deceleration Ramp Hold) - YASKAWA Varispeed F7 Instruction Manual

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 H1-06 (multi-function contact input terminal S3 to S8 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 ter-
minal 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
Con-
stant
Number
Frequency
reference
d4-01
hold function
selection
Time Chart
The time chart when using Acceleration/Deceleration Ramp Hold commands is given below.
Acceleration/Deceleration
Ramp Hold
Frequency reference
Output frequency
-80
6
Name Description
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.
Power supply
Forward/Stop
Hold
Fig 6.50 Acceleration/Deceleration Ramp Hold
Control Methods
Change
Setting Factory during
Range Setting Opera-
V/f
tion
0 or 1 0 No A
Hold
MEMO
Open
BUS
V/f Flux
Loop
Regis-
with Vec-
Vec-
ter
PG tor
tor
A A A 298H