Yaskawa Z1000U - Manual (Page 168)

Setting 0: Count Successful Restarts
The drive will continuously attempt to restart. If it restarts successfully, the restart counter is increased. This operation is
repeated each time a fault occurs until the counter reaches the value set to L5-01.
Setting 1: Count Restart Attempts
The drive will attempt to restart using the time interval set to parameter L5-04. A record is kept of the number of attempts to
restart to the drive, regardless of whether those attempts were successful. When the number of attempted restarts exceeds the
value set to L5-01, the drive stops attempting to restart.
n L6-13: Motor Underload Protection Selection
Sets Motor Underload Protection (UL6) based on motor load and determines whether the level of L6-02 refers to fbase or
fmax.
Selects the operation of underload detection UL6. Underload is detected when the output current falls below the underload
detection level defined by L6-14 and L2-02.
No. Name Setting Range Default
L6-13 Motor Underload Protection Selection 0, 1 0
Setting 0: Fbase Motor Load Enabled
Setting 1: Fmax Base Motor Load Enabled
UL Detection Level
L6-02
(0 to 300%)
0 Fmin Fbase
1/f
Fmax
Output
Frequency
L6-14
Motor Underload
Protection at Fmin
Figure 4.36 Motor Underload Protection
n L6-14: Motor Underload Protection Level at Minimum Frequency
Sets the UL6 detection level at minimum frequency by percentage of drive rated current
No. Name Setting Range Default
L6-14 Motor Underload Protection Level at Minimum Frequency 0 to 300% 15%
n L8-02: Overheat Alarm Level
Sets the overheat alarm (oH) detection level.
The drive outputs an alarm when the heatsink temperature exceeds the overheat alarm level. If the drive is set to continue
operation after this alarm occurs (L8-03 = 4) and the temperature reaches the overheat fault level, the drive will trigger an oH1
fault and stop operation.
When an output terminal is set for the oH pre-alarm (H2-oo = 20), the switch will close when the heatsink temperature rises
above L8-02.
No. Name Setting Range Default
L8-02 Overheat Alarm Level 50 to 150 °C
Determined by
o2-04
4.12 Advanced Drive Setup Adjustments
168 YASKAWA ELECTRIC TOEP C710636 10B Z1000U HVAC MATRIX Drive User Manual