YASKAWA OYMC V1000, Programming Manual

Page: 143 / 408

1.7 H: Terminal Functions
YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual 143
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NOTICE: If using baseblock in hoist applications, make sure the brake closes when the drive output is cut
off by a Baseblock input. Failure to do so will result in the motor suddenly coasting when the Baseblock
command is entered, causing the load to slip.
Figure 1.46
Figure 1.46 Baseblock Operation During Run
Setting A: Accel/Decel Ramp Hold
When the digital input programmed for the Accel/Decel Ramp Hold function closes, the
drive will lock ("hold") the output frequency. All acceleration or deceleration will cease, and
the drive will hold the current speed. Acceleration or deceleration will resume once the input
is opened again.
If the Accel/Decel Ramp Hold function is enabled (d4-01 = 1), the drive will save the output
frequency to memory whenever the Ramp Hold input is closed. When the drive is restarted
after stop or after power supply interruption, the output frequency that was saved will
become the frequency reference (provided that the Accel/Decel Ramp Hold input is still
closed). Refer to
d4-01: Frequency Reference Hold Function Selection on page 100 for
details.
Baseblock (Interrupt output) Closed Open
Operation
Inputs
Setting 8 (N.O.) Setting 9 (N.C.)
Begin Speed Search from the
previous frequency reference
Run command
Baseblock input
Frequency
reference
Output frequency
OFF ON
Output off, motor coasts
ON
Baseblock
release