12.9 L: Protection Functions
914 YASKAWA SIEPC71061705H GA700 Series Technical Manual
Note:
• Set L8-29 = 1 [Output Unbalance Detection Sel = Enabled] to enable L8-31.
• If the drive incorrectly detects LF2, increase L8-31 in 5-unit increments.
• The keypad shows L8-31 when E9-01 = 1 [Motor Type Selection = Permanent Magnet (PM)] in EZ Vector Control.
■ L8-32: Cooling Fan Failure Selection
No.
(Hex.)
Name Description
Default
(Range)
L8-32
(04E2)
Cooling Fan Failure
Selection
Sets operation when the drive detects FAn [Internal Fan Fault].
1
(0 - 4)
0 : Ramp to Stop
The drive ramps the motor to stop in the deceleration time. Fault relay output terminal MA-MC turns ON, and
MB-MC turns OFF.
1 : Coast to Stop
The output turns off and the motor coasts to stop. Fault relay output terminal MA-MC turns ON, and MB-MC
turns OFF.
2 : Fast Stop (Use C1-09)
The drive uses the deceleration time set in C1-09 [Fast Stop Time]. Fault relay output terminal MA-MC turns ON,
and MB-MC turns OFF.
3 : Alarm Only
The keypad shows FAn and the drive continues operation. The output terminal set for Alarm [H2-01 to H2-03 =
10] activates.
4 : Operate at Reduced Speed (L8-19)
The drive decelerates to the level set in L8-19 [Freq Reduction @ oH Pre-Alarm] and continues operation. FAn
flashes on the keypad. Refer to L8-03: Overheat Pre-Alarm Selection on page 909 for more information about
drive derating operation.
■ L8-35: Installation Method Selection
No.
(Hex.)
Name Description
Default
(Range)
L8-35
(04EC)
Installation Method
Selection
Sets the type of drive installation.
Determined by the drive
(0 - 3)
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.
The overload protection detection level for the drive is automatically adjusted to the optimal value in accordance
with the setting value. Refer to Derating Depending on Ambient Temperature on page 444 for information about
derating as specified by ambient temperature.
0 : IP20/UL Open Type/Ex Heatsink
Use this setting to install IP20/UL Open Type drives or when the heatsink (cooling fin) is outside the enclosure
panel.
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.
Make sure that there is 2 mm (0.08 in) minimum of space between drives.
2 : IP20/UL Type 1
Use this setting to install IP20/UL Type 1 drives.
3 : Finless
Use this setting to install a finless drive.
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