YASKAWA A1000

5.4 d: Reference Settings
202 YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
Setting 1: Enabled
• Acceleration hold
The last hold value will be saved when the Run command or the
drive power is switched off. The drive will use the
value that was saved as the frequency reference when it restarts. The multi-function input terminal set for “Accel/decel
ramp hold” (H1- = A) must be enabled the entire time, or else the hold value will be cleared when the power is
switched on.
Figure 5.48
Figure 5.48 Frequency Reference Hold with Accel/Decel Hold Function
• Up/Down
The frequency reference value will be saved
when the Run command or the drive power is switched off. The drive will
use the frequency reference that was saved when it restarts.
• Up/Down 2 with frequency reference from digital operator
When a Run command is active and the Up
/Down 2 command is released for longer than 5 s, the Up/Down 2 bias
value is added to the frequency reference and then reset to 0. This new frequency reference is saved and will also be
used to restart the drive after the power is cycled.
Figure 5.49
Figure 5.49 Up/Down 2 Example with Reference from Digital Operator and d4-01 = 1
Power supply
Forward Run / Stop
Hold Accel/Decel
Frequency reference
Output frequency
d4-01 = 1
d4-01 = 0
Hold Hold
OFF
OFFOFF
OFF OFF
ON
ON ON
ON ON
ON
Bias
Output
frequency
Bias is added to frequency
reference and reset to 0
Up 2 command
Frequency
reference
5 s
5 s