YASKAWA GA500 series, Programming, Page: 402 / 526

2.9 L: Protection Functions
402 YASKAWA TOEPYAIGA5002A GA500 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.
The overload protection detection level for the drive is automatically adjusted to the optimal value in accordance with
the setting value. Refer to the GA500 Technical Reference (Doc. SIEPC71061752) Specifications section for
information about derating as specified by ambient temperature.
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.
2 : IP20/UL Type 1
Use this setting to install IP20/UL Type 1 or IP55 drives.
3 : External Heatsink
Use this setting when the heatsink (cooling fin) is outside the control panel.
■
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%)
Note:
The detection level is automatically calculated when L8-51 = 0 .
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV