YASKAWA A1000 Technical Manual page 237

Setting 2: External reference 1/2 selection
This function can be used to switch the Run command and frequency reference source between External reference 1 and
2 if the drive is in the REMOTE mode.
Status
Open External reference 1 is used (defined by parameters b1-01 and b1-02)
Closed External reference 2 is used (defined by parameters b1-15 and b1-16)
Note: With default settings the drive is not to allow switching between External reference 1 and 2 during run.
REMOTE Run Selection on page 156
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. Refer to
Reference on page 198 for details.
Setting 6: Jog reference selection
The Jog frequency set in parameter d1-17 becomes the frequency reference when the input terminal closes. 
Refer to d1: Frequency Reference on page 198
Setting 7: Accel/decel time selection 1
Used to switch between accel/decel times 1 (C1-01 and C1-02) and 2 (C1-03 and C1-04).
Accel, Decel Times 1 to 4 on page 183
Setting 8, 9: Baseblock command (N.O., N.C.)
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 digital operator to indicate baseblock. When baseblock ends and a Run
command is active, the drive performs Speed Search to get the motor running again.
DIgital Input Function
Setting 9 (N.C.)
Setting 8 (N.O.)
NOTICE: If using baseblock in hoist applications, make sure the brake closes when the drive output is cut off by a Baseblock
command triggered via one of the input terminals. Failure to do so will result in the motor suddenly coasting when the Baseblock
command is entered, causing the load to slip.
Figure 5.60
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. 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 201
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
if this feature is required by the application.
for details.
for details.
Input Open
Baseblock (Interrupt output)
Normal operation
OFF ON
Run command
Baseblock input
Frequency
reference
Output frequency
Figure 5.60 Baseblock Operation During Run
Description
Drive Operation
Baseblock
ON
release
Begin Speed Search from the
previous frequency reference
Output off, motor coasts
5.7 H: Terminal Functions
Refer to b1-07: LOCAL/
d1: Frequency
Refer to C1-01 to C1-08:
Input Closed
Normal operation
Baseblock (Interrupt output)
for details.
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