L8: drive protection – Yaskawa AC Drive-P1000 Industrial Fan User Manual
Page 446
No.
(Addr.
Hex)
Name
Description
Values
Page
L6-04
(4A4)
Torque Detection
Selection 2
0: Disabled
1: oL4 detection only active during speed agree, operation continues after
detection
2: oL4 detection always active during run, operation continues after detection
3: oL4 detection only active during speed agree, output shuts down on an oL4
fault
4: oL4 detection always active during run, output shuts down on an oL4 fault
5: UL4 detection only active during speed agree, operation continues after
detection
6: UL4 detection always active during run, operation continues after detection
7: UL4 detection only active during speed agree, output shuts down on an oL4
fault
8: UL4 detection always active during run, output shuts down on an oL4 fault
Default: 0
Range: 0 to 8
L6-05
(4A5)
Torque Detection
Level 2
Sets the overtorque and undertorque detection level.
Default: 150%
Min.: 0
Max.: 300
L6-06
(4A6)
Torque Detection
Time 2
Sets the time an overtorque or undertorque condition must exist to trigger
torque detection 2.
Default: 0.1 s
Min.: 0.0
Max.: 10.0
L6-13
(62E)
Motor Underload Protection
Selection
Sets the motor underload protection (UL6) based on motor load.
0: Base frequency enable
1: Max frequency enable
Default: 0
Range: 0, 1
L6-14
(62F)
Motor Underload Protection
Level at Minimum
Frequency
Sets the UL6 detection level at minimum frequency by percentage of drive
rated current.
Default: 15%
Min.: 0
Max.: 300
u
L8: Drive Protection
No.
(Addr.
Hex)
Name
Description
Values
Page
L8-01
(4AD)
Internal Dynamic Braking
Resistor Protection
Selection (ERF type)
0: Resistor overheat protection disabled
1: Resistor overheat protection enabled
Default: 0
Range: 0, 1
L8-02
(4AE)
Overheat Alarm Level
An overheat alarm occurs when heatsink temperature exceeds the L8-02 level. Default:
<1>
Min.: 50 °C
Max.: 150 °C
L8-03
(4AF)
Overheat Pre-Alarm
Operation Selection
0: Ramp to stop. A fault is triggered.
1: Coast to stop. A fault is triggered.
2: Fast Stop. Decelerate to stop using the deceleration time in C1-09. A fault
is triggered.
3: Continue operation. An alarm is triggered.
4: Continue operation at reduced speed as set in L8-19.
Default: 3
Range: 0 to 4
L8-05
(4B1)
Input Phase Loss Protection
Selection
Selects the detection of input current phase loss, power supply voltage
imbalance, or main circuit electrolytic capacitor deterioration.
0: Disabled
1: Enabled
Default: 1
Range: 0, 1
L8-07
(4B3)
Output Phase Loss
Protection Selection
0: Disabled
1: Enabled (triggered by a single phase loss)
2: Enabled (triggered when two phases are lost)
Default: 1
Range: 0 to 2
L8-09
(4B5)
Output Ground Fault
Detection Selection
0: Disabled
1: Enabled
Default: 1
Range: 0, 1
L8-10
(4B6)
Heatsink Cooling Fan
Operation Selection
0: During run only. Fan operates only during run for L8-11 seconds after stop.
1: Fan always on. Cooling fan operates whenever the drive is powered up.
Default: 0
Range: 0, 1
L8-11
(4B7)
Heatsink Cooling Fan Off
Delay Time
Sets a delay time to shut off the cooling fan after the Run command is removed
when L8-10 = 0.
Default: 60 s
Min.: 0
Max.: 300
L8-12
(4B8)
Ambient Temperature
Setting
Enter the ambient temperature. This value adjusts the oL2 detection level.
Default: 40 °C
Min.: -10
Max.: 50
L8-15
(4BB)
oL2 Characteristics
Selection at Low Speeds
0: No oL2 level reduction below 6 Hz.
1: oL2 level is reduced linearly below 6 Hz. It is halved at 0 Hz.
Default: 1
Range: 0, 1
L8-18
(4BE)
Software Current Limit
Selection
0: Disabled
1: Enabled
Default: 0
Range: 0, 1
B.8 L: Protection Function
446
YASKAWA SIEP YAIP1U 01B AC Drive - P1000 Technical Manual