YASKAWA GA800 Technical Reference page 901

Note:
Refer to "Switch Speed Control and Torque Control" for more information.
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72: Zero Servo
Setting Value Function
72 Zero Servo
This function will hold a stopped motor if an external force is applied or an analog reference is offset.
Note:
• Refer to "b9: Zero Servo" for more information.
• When you use the Zero Servo function, keep the Run command ON. Zero servo stops the motor and if you turn OFF the Run command, it
will not have power.
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75: Up 2 Command
Setting Value Function
75 Up 2 Command
When you activate the terminal set for Up2 Command, the bias will increase. When you activate the terminal set for
Down 2 Command, the bias will decrease. When you activate or deactivate the two commands, the drive will hold the
frequency reference. Table 12.59
and d4-01, d4-03, and 4-05.
Note:
• When you use this function, set the optimal bias limit values with d4-08 and d4-09 [Up/Down 2 Bias Upper Limit/Lower Limit].
• Refer to d4: Frequency Ref Up/Down & Hold on page 804
Frequency
Function d4-03
Reference Source
1
2
Multi-step speed
0.00
reference
3
4
Multi-step speed
reference
5
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
V/f CL-V/f OLV CLV
Sets the function to hold a stopped motor.
V/f CL-V/f OLV CLV
Sets the function to increase the frequency reference bias value to accelerate the motor when the terminal is activated. Set this
function and H1-xx = 76 [Down 2 Command] together.
gives information about the relation between operation of the Up/Down 2 Command
for more information.
Table 12.59 Up 2 Command, Down 2 Command
d4-05 d4-01
• When the Up 2 Command is active, the drive
0
accelerates the motor (increases the bias value).
• When the Down 2 Command is active, the drive
decelerates the motor (decreases the bias value)
• When the Up 2 Command and Down 2
Command are active or not active, the drive
0
holds the output frequency. (holds the bias
1
value).
• When the frequency changes, it will reset the
bias.
• For all other statuses, the drive will follow the
frequency reference.
• When the Up 2 Command is active, the drive
accelerates the motor.
• When the Down 2 Command is active, the drive
1 -
decelerates the motor.
• For all other statuses, the drive will follow the
frequency reference.
• When the Up 2 Command is active, the drive
0
accelerates the motor to "Frequency Reference +
d4-03" (the bias value will increase to the value
set in d4-03)
• When the Down 2 Command is active, the drive
decelerates the motor to "Frequency Reference -
d4-03" (the bias value will decrease to the value
set in d4-03).
> 0 -
• When the Up 2 Command and Down 2
1
Command are active or not active, the drive
holds the output frequency. (holds the bias
value).
• When the frequency changes, it will reset the
bias.
• For all other statuses, the drive will follow the
frequency reference.
Description
AOLV OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
AOLV OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Operation
12.8 H: Terminal Functions
Storing the Frequency Reference or
Frequency Bias
Not stored.
When the bias value and frequency reference are
constant for 5 seconds after the frequency reference
hold starts, the drive will add the bias value to the
enabled frequency reference, then reset.
Not stored.
Not stored.
When the bias value and frequency reference are
constant for 5 seconds after the frequency reference
hold starts, the drive will add the bias value to the
enabled frequency reference, then reset.
12
901