YASKAWA V1000 Technical Manual page 178

5.7 H: Terminal Functions
Setting 3 to 5: Multi-Step Speed Reference 1 to 3
Used to switch Multi-Step Speed frequency references d1-01 to d1-08 by digital inputs.
Reference 1 to 16 and Jog Reference on page 154
Setting 6: Jog Frequency Reference Selection
Used to select the Jog frequency set in parameter d1-17 as active frequency reference.
Reference 1 to 16 and Jog Reference on page 154
Setting 7: Accel/Decel Time Selection 1
Used to switch between accel/decel times 1 and 2.
details.
Setting 8/9: External Baseblock (N.O.) and External Baseblock (N.C.)
Setting 8 or 9 assign the Baseblock command to digital input terminals. When the drive receives a Baseblock command,
the output transistor stop switching and the motor coasts to stop. During this time, the alarm "bb" will flash on the LED
operator to indicate baseblock. For more information on alarms,
ends and a Run command is active, the drive performs Speed Search to get the motor running again
Search on page 125 for details).
Operation
Normal operation
Baseblock (Interrupt output)
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.
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).
to d4-01: Frequency Reference Hold Function Selection on page 156
Setting B: Drive Overheat Alarm (oH2)
Triggers an oH2 alarm when the contact closes. Because this is an alarm, drive operation is not affected.
Setting C: Analog Inputs A1/A2 Enable
If a digital input programmed for this function is open, both analog inputs A1 and A2 are disabled. Close the input to
enable the inputs.
The drive disregards the input value selected by parameter H3-14 when this terminal closes.
Note: In drive software versions PRG: 1015 and earlier, input values to terminals A1 and A2 are both disregarded when this terminal closes.
178
for details.
for details.
Refer to C1-01 to C1-08: Accel/Decel Times 1 to 4 on page 142
Setting 8 (N.O.)
OFF ON
Run command
Baseblock input
Frequency
reference
Output frequency
Figure 5.47 Baseblock Operation During Run
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Refer to Alarm Detection on page
Inputs
Open
Closed
Baseblock
ON
release
Begin Speed Search from the
previous frequency reference
Output off, motor coasts
for details.
Refer to d1-01 to d1-17: Frequency
Refer to d1-01 to d1-17: Frequency
266. When baseblock
(Refer to b3: Speed
Setting 9 (N.C.)
Closed
Open
for
Refer