Yaskawa AC Drive P1000 Bypass Technical Manual - Manual (Page 136)

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 <1> .
<1> Details on this function can be found in the standard P1000 Technical Manual (SIEPYAIP1U01) at www.yaskawa.com.
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 5.39 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%
u L8: Drive Protection
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 <1> ) and the temperature reaches the overheat fault level, the drive will trigger an
oH1 fault and stop operation.
<1> Details on this function can be found in the standard P1000 Technical Manual (SIEPYAIP1U01) at www.yaskawa.com.
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
n L8-05: Input Phase Loss Protection Selection
Enables or disables the input phase loss detection.
5.8 L: Protection Functions
136 YASKAWA SIEP YAIP1B 01A YASKAWA AC Drive – P1000 Bypass Technical Manual