Yaskawa AC Drive Z1000 AC Drive HVAC Fan - Manual (Page 116)

n L6-03: Torque Detection Time 1
Determines the time required to trigger an alarm or fault after exceeding the level in L6-02.
No. Name Setting Range Default
L6-03 Torque Detection Time 1 0.0 to 10.0 s 10.0 s
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 1.70 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 L8-01: Internal Dynamic Braking Resistor Protection Selection (ERF type)
Selects the dynamic braking resistor protection when using an optional heatsink mounted braking resistor (ERF type, 3% ED).
No. Name Setting Range Default
L8-01 Internal Dynamic Braking Resistor Protection Selection (ERF type) 0, 1
Determined by
o2-04
Setting 0: Disabled
Disables braking resistor protection. Use this setting for any dynamic braking option other than the Yaskawa ERF-type resistor.
Setting 1: Enabled
Enables protection for Yaskawa ERF-type resistors.
1.8 L: Protection Functions
116 YASKAWA ELECTRIC SIEP YAIZ1U 03A YASKAWA AC Drive – Z1000 Programming Manual