YASKAWA GA700 Series Technical Manual page 818

12.8 H: Terminal Functions
the time set in d5-06, the three analog inputs will keep their present value. Complete the signal switchover with an
external source in this time.
Note:
Refer to "Switch Speed Control and Torque Control" for more information.
■
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.
■
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.
2 Command 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 725
Func Frequency
tion Reference Source
1
2
Multi-step speed
reference
3
4
Multi-step speed
reference
5
818
V/f CL-V/f OLV
Sets the function to hold a stopped motor.
V/f CL-V/f OLV
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.
Table 12.64 gives information about the relation between operation of the Up/Down
Table 12.64 Up 2 Command, Down 2 Command
d4-03 d4-05 d4-01
• When the Up 2 Command is active, the drive
0
• When the Down 2 Command is active, the
• When the Up 2 Command and Down 2
0
1
• When the frequency changes, it will reset the
0.00
• For all other statuses, the drive will follow the
• When the Up 2 Command is active, the drive
• When the Down 2 Command is active, the
1 -
• For all other statuses, the drive will follow the
• When the Up 2 Command is active, the drive
0
• When the Down 2 Command is active, the
> 0 -
• When the Up 2 Command and Down 2
1
• When the frequency changes, it will reset the
• For all other statuses, the drive will follow the
Description
CLV AOLV OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
Description
CLV AOLV OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
for more information.
Operation
accelerates the motor (increases the bias value).
drive decelerates the motor (decreases the bias
value)
Command are active or not active, the drive
holds the output frequency. (holds the bias
value).
bias.
frequency reference.
accelerates the motor.
drive decelerates the motor.
frequency reference.
accelerates the motor to "Frequency Reference
+ d4-03" (the bias value will increase to the
value set in d4-03)
drive decelerates the motor to "Frequency
Reference - d4-03" (the bias value will decrease
to the value set in d4-03).
Command are active or not active, the drive
holds the output frequency. (holds the bias
value).
bias.
frequency reference.
YASKAWA SIEPC71061705H GA700 Series Technical Manual
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.