Yaskawa Z1000U - Manual (Page 173)

The drive uses the delay time set in parameter L8-40 and a hysteresis of 12% when switching the carrier frequency back to
the set value.
n L8-40: Carrier Frequency Reduction Off-Delay Time
Sets a hold time before returning to the original carrier frequency setting after the carrier frequency has been temporarily
derated as determined by L8-38. The carrier frequency reduction function is disabled when this value is 0.00 s.
No. Name Setting Range Default
L8-40 Carrier Frequency Reduction Off-Delay Time 0.00 to 2.00 s 0.50 s
n L8-41: High Current Alarm Selection
Triggers a high current alarm (HCA) when the output current exceeds 150% of the drive rated current.
No. Name Setting Range Default
L8-41 High Current Alarm Selection 0, 1 0
Setting 0: Disabled
No alarm is detected.
Setting 1: Enabled
An alarm is triggered when the output current exceeds 150% of the drive rated current. A digital output set for an alarm
(H2-oo = 10) will close.
n o1-01: Drive Mode Unit Monitor Selection
When o1-02 is set to 5, any U monitors can be displayed. This parameter will select the monitors. Pressing the up arrow key
will display the following data: frequency reference → rotational direction → output frequency → output current → o1-01
selection.
Parameter o1-01 selects the content of the last monitor in this sequence. This is done by entering the “1oo” part of
“U1-oo”. Certain monitors are not available in some control modes. There is no effect like this on an LCD operator.
No. Name Setting Range Default
o1-01 Drive Mode Unit Monitor Selection
104 to 914
U1-04 (Control Mode) to
U9-14 (Power Monitor) <1>
106 (U1-06)
<1> U2-oo and U3-oo parameters cannot be selected.
n o1-02: User Monitor Selection after Power Up
Selects which monitor parameter is displayed upon power up by entering the 1- oo part of U1-oo. Certain monitors are
not available in some control modes.
No. Name Setting Range Default
o1-02 User Monitor Selection after Power Up 1 to 5 <1>
<1> Default is 1 when b5-01 is set to 0.
Default is 3 when b5-01 is set to 1 or 3.
Setting 1: Frequency Reference (U1-01)
Setting 2: Motor Direction
Setting 3: Output Frequency (U1-02)
Setting 4: Output Current (U1-03)
Setting 5: User Monitor
The monitor value selected by o1-01 will be displayed.
n o1-03: HOA Keypad Display Selection
Sets the units used to display the frequency reference and output frequency. Set o1-03 to 3 for user-set units before setting
parameters o1-10 and o1-11.
No. Name Setting Range Default
o1-03 HOA Keypad Display Selection 0 to 3 0
4.12 Advanced Drive Setup Adjustments
YASKAWA ELECTRIC TOEP C710636 10B Z1000U HVAC MATRIX Drive User Manual 173
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Start-Up Programming & Operation