12.8 H: Terminal Functions
818 YASKAWA SIEPC71061705H GA700 Series Technical Manual
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 Description
72 Zero Servo
Sets the function to hold a stopped motor.
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 Description
75 Up 2 Command
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.
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 12.64 gives information about the relation between operation of the Up/Down
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 for more information.
Table 12.64 Up 2 Command, Down 2 Command
Func
tion
Frequency
Reference Source
d4-03 d4-05 d4-01 Operation
Storing the Frequency Reference or
Frequency Bias
1
Multi-step speed
reference
0.00
0
0
• When the Up 2 Command is active, the drive
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
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.
Not stored.
2 1
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.
3 1 -
• When the Up 2 Command is active, the drive
accelerates the motor.
• When the Down 2 Command is active, the
drive decelerates the motor.
• For all other statuses, the drive will follow the
frequency reference.
Not stored.
4
Multi-step speed
reference
> 0 -
0
• When the Up 2 Command is active, the drive
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).
• When the Up 2 Command and Down 2
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.
Not stored.
5 1
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.
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