2.9 L: Protection Functions
402 YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING
Note:
• Parameter A1-03 [Initialize Parameters] does not initialize this parameter.
• This parameter is set to the correct value when the drive is shipped. Change the value only in these conditions:
–Side-by-Side installation
–When you install a UL Type 1 kit on an IP20/UL Open Type drive to convert the drive to an IP20/UL Type 1 drive.
–Mounting a standard drive with the heatsink outside the enclosure panel.
• Do not change the settings for finless-type drives.
The drive automatically adjusts the overload protection detection level to the best value for each setting value.
0 : IP20/UL Open Type
Use this setting to install IP20/UL Open Type drives.
Make sure that there is 30 mm (1.18 in) minimum of space between drives or between the drive and side of the
enclosure panel.
1 : Side-by-Side Mounting
Use this setting to install more than one drive side-by-side.
Note:
You cannot install finless-type drives side-by-side.
2 : IP20/UL Type1
Use this setting to install IP20/UL Type 1 drives.
Note:
You cannot install an IP20/UL Type 1 Kit (optional) on a finless-type drive.
3 : External Heatsink/Finless
Use this setting when the heatsink (cooling fin) is outside the enclosure panel or when you install a finless-type drive.
■ L8-40: Carrier Freq Reduction Off-Delay
No.
(Hex.)
Name Description
Default
(Range)
L8-40
(04F1)
Carrier Freq Reduction Off-
Delay
Sets the length of time until the automatically reduced carrier frequency returns to the condition
before the reduction.
Determined by A1-02
(0.00 - 2.00 s)
Set L8-40 ≠ 0.00 to enable the carrier frequency reduction function during start-up. When operation starts, the drive
automatically decreases the carrier frequency. When the time set in L8-40 is expired, the carrier frequency returns to
the value set in C6-02 [Carrier Frequency Selection].
■ L8-41: High Current Alarm Selection
No.
(Hex.)
Name Description
Default
(Range)
L8-41
(04F2)
High Current Alarm
Selection
Sets the function to cause an HCA [Current Alarm] when the output current is more than 150% of the
drive rated current.
0
(0, 1)
0 : No
The drive will not detect HCA.
1 : Yes
If the output current is more than 150% of the drive rated current, the drive will detect HCA.
The MFDO terminal set for an Alarm [H2-01 to H2-03 = 10] activates.
■ L8-51: STPo I Detection Level
No.
(Hex.)
Name Description
Default
(Range)
L8-51
(0471)
Expert
STPo I Detection Level
Sets the STPo [Motor Step-Out Detected] detection level as a percentage of the motor rated current.
0.0%
(0.0 - 300.0%)
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