Parameter Details
11
11.2 A: Initialization Parameters
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 695
• Change H3-13 [Analog Input FilterTime Constant] to a range of 0.01 s to 0.10 s.
Startup Current Check
When you do a test run, set L8-41 =1 [High Current Alarm Selection = Enabled] and use U4-13 [Peak Hold
Current] and a clamp ammeter with the machine under load and not under load to check the motor current during
start up.
If the motor torque is not sufficient during start up or if the timing between the motor and the holding brake is
unsatisfactory and causes the motor to lock, a large quantity of current will flow. If the current flow is more than
150% of the drive rated current, the heat stress on the IGBTs will decrease the service life of drive parts. In these
conditions, adjust the parameters again and decrease the load to decrease the current to less than 150%.
To decrease the effects of heat stress, decrease the carrier frequency of the drive to 2.0 kHz to 2.5 kHz for
applications where low audible noise is necessary.
Overvoltage Suppression Function
If the overvoltage suppression function is used in elevator type applications, there is a risk of rollback and falls.
Set L3-11 = 0 [Overvoltage Suppression Select = Disabled].
The overvoltage suppression function is designed to prevent an overvoltage trip in a situation in which a braking
resistor is not used with a regenerative load. If the overvoltage suppression function is enabled, the regeneration
torque reference within the drive is automatically controlled during regeneration.
Note:
When using the drive for applications such as high speed elevators with a speed of 2 ms or more and direct drive elevators, or when you
need drives designed for cranes, contact Yaskawa or your Yaskawa sales representative.
■ A1-07: DriveWorksEZ Function Selection
No.
(Hex.)
Name Description
Default
(Range)
A1-07
(0128)
DriveWorksEZ
Function Selection
Sets the drive to operate with DriveWorksEZ.
0
(0 - 2)
DriveWorksEZ is a simple visual programming tool that lets you connect function blocks to customize the drive
and add PLC functions.
Note:
• DriveWorksEZ will overwrite drive settings when it uses MFDI/MFDO and MFAI/MFAO. When you use DriveWorksEZ to make
changes to the drive, the changes will stay after you disable DriveWorksEZ.
• For more information about DriveWorksEZ, contact Yaskawa or your nearest sales representative.
0 : DWEZ Disabled
1 : DWEZ Enabled
2 : Enabled/Disabled wDigital Input
Set H1-xx = 9F [MFDI Function Select = DWEZ Disable]. Deactivate the digital input to enable programs made
with DriveWorksEZ and activate the terminal to disable the programs.
■ A1-11: Firmware Update Lock
No.
（Hex.）
Name Description
Default
(Range)
A1-11
(111D)
Expert
Firmware Update
Lock
This function locks the drive firmware. When enabled, users cannot flash
new drive firmware.
0
(0, 1)
0 : Disabled
Lock is disabled.
1 : Enabled
Lock is enabled.
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