When using a PM motor, this is applicable when the output current is 30% or higher of the drive rated current.
When using an IM motor, this is applicable when the output current is 5% or higher of the drive rated current.
Setting 2: Fault when Two Phases Are Lost
An output phase loss fault (LF) is triggered when the output current for phases U, V, and W all drop to 5% or less of the drive
rated current.
The output shuts off and the motor coasts to stop.
n
L8-09: Output Ground Fault Detection Selection
Enables or disables the output ground fault detection.
No.
Name
Setting Range
Default
L8-09
Output Ground Fault Detection Selection
0, 1
Determined by
o2-04
Setting 0: Disabled
Ground faults are not detected.
Setting 1: Enabled
A ground fault (GF) is triggered when high leakage current or a ground short circuit occurs in one or two output phases.
n
L8-10: Heatsink Cooling Fan Operation Selection
Selects the heatsink cooling fan operation.
No.
Name
Setting Range
Default
L8-10
Heatsink Cooling Fan Operation Selection
0, 1
0
Setting 0: Run with Timer
The fan is switched on when a Run command is active and switched off with the delay set to parameter L8-11 after releasing
the Run command. This setting extends the fan lifetime.
Setting 1: Run Always
The fan runs when power is supplied to the drive.
n
L8-11: Heatsink Cooling Fan Off-Delay Time
Sets the cooling fan switch off-delay time if parameter L8-10 is set to 0.
No.
Name
Setting Range
Default
L8-11
Heatsink Cooling Fan Off-Delay Time
0 to 300 s
60 s
n
L8-12: Ambient Temperature Setting
Automatically adapts the drive rated current to safe values when used with parameter L8-35. This eliminates the need to reduce
the drive rated current when the temperature where the drive is mounted is above the specified values.
No.
Name
Setting Range
Default
L8-12
Ambient Temperature Setting
-10 to +50 °C
40 °C
n
L8-15: oL2 Characteristics Selection at Low Speeds
Selects whether the drive overload capability (oL fault detection level) is reduced at low speeds to prevent premature output
transistor failures. Set this parameter to 0 (Protection disabled at low speed) when protection is activated for an oL2 fault for
a light load at low speed.
Note:
1.
Contact Yaskawa before using the drive for applications for which the setting is 0 (disabled).
2.
Do not set this parameter to 0 (disabled) in V/f or OLV control.
3.
Do not set this parameter to 0 (disabled) in models 4
o
0302 to 4
o
0414.
No.
Name
Setting Range
Default
L8-15
oL2 Characteristics Selection at Low Speed
0, 1
1
1.8 L: Protection Functions
YASKAWA ELECTRIC SIEP C710636 10C Z1000U HVAC MATRIX Drive Programming Manual
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Parameter Details
