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Setting 2: External Reference 1/2 Selection
The external reference 1/external reference 2 selection function allows the user to switch between the frequency reference and
Run command source between external reference 1 and 2.
Status
Description
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:
The default setting of the drive is not to allow switching between external reference 1 and 2 during run.
if this feature is required by the application.
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 d1-01 to d1-17: Frequency
Reference 1 to 16 and Jog Reference on page 160
for details.
Setting 6: Jog Frequency Reference Selection
Used to select the Jog frequency set in parameter d1-17 as active frequency reference.
Refer to d1-01 to d1-17: Frequency
Reference 1 to 16 and Jog Reference on page 160
for details.
Setting 7: Accel/Decel Time Selection 1
Used to switch between accel/decel times 1 and 2.
Refer to C1-01 to C1-08: Accel/Decel Times 1 to 4 on page 147
for 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,
Refer to Alarm Detection on page 282
Run command is active, the drive performs Speed Search to get the motor running again (
Refer to b3: Speed Search on page
for details).
Operation
Inputs
Setting 8 (N.O.)
Setting 9 (N.C.)
Normal operation
Open
Closed
Baseblock (Interrupt output)
Closed
Open
NOTICE: If using baseblock in elevator 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.
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
Figure 5.47 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.
5.7 H: Terminal Functions
186
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual