YASKAWA GA800 Programming Manual page 192

2.2 A: Initialization Parameters
Note:
• Holds through an external source to not change the torque compensation signal during run. If you change the torque compensation signal
during run, the motor can oscillate.
• When you set motor reverse to the increase command and set motor forward to the decrease command, the polarity of the torque
compensation signal will reverse.
Analog Input FilterTime Constant
• Minimize the effects of noise.
• 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. In these conditions, adjust the
parameters again and decrease the load to decrease the current to less than 150%. 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.
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 not necessary.
Overvoltage Suppression Function
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:
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A1-07: DriveWorksEZ Function Selection
No.
Name
(Hex.)
A1-07 DriveWorksEZ Function
Selection
(0128)
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.
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A1-11: Firmware Update Lock
No.
Name
(Hex.)
A1-11 Firmware Update Lock
(111D)
Expert
0 : Disabled
Lock is disabled.
1 : Enabled
Lock is enabled.
192
V/f CL-V/f OLV CLV AOLV
Sets the drive to operate with DriveWorksEZ.
V/f CL-V/f OLV CLV AOLV
Protects the drive firmware. When you enable the protection, you cannot update the drive firmware.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
YASKAWA TOEPYAIGA8002B GA800 Drive Programming
Default
(Range)
0
(0 - 2)
Default
(Range)
0
(0, 1)