Yaskawa Matrix Converter - Manual (Page 234)

Input Terminal Functions
6-
69
‹ Stopping Acceleration and Deceleration (Accel/Decel Ramp Hold)
The accel/decel ramp hold function stops acceleration and deceleration, stores the output frequency at that
point in time, and then continues operation.
Set one of the parameters H1-01 to H1-10 (Terminal S3 to S12 Function Selection) to A (accel/decel 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 Accel/Decel Ramp Hold Command is input, the output frequency is still stored
even after the power supply is turned off.
„ Related Parameters
„ Time Chart
A time chart for the Accel/Decel Ramp Hold Commands appears below.
Fig 6.50 Accel/Decel Ramp Hold
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display V/f
Open
Loop
Vector
Flux
Vector
d4-01
Frequency Refer-
ence Hold Func-
tion Selection 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 pre-
vious 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
MOP Ref Memory
Power supply
Forward/Stop
Accel/Decel Ramp Hold
Frequency reference
Output frequency
Hold Hold
off on
off off on on
off on
off
d4-01 = 1
d4-01 = 0