L8: Drive Protection - YASKAWA A1000 Series Quick Start Manual

B.8 L: Protection Function
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L8: Drive Protection

No.
(Addr. Name
Hex)
Internal Dynamic
L8-01 Braking Resistor
(04AD) Protection Selection
(ERF type)
L8-02
Overheat Alarm Level
(04AE)
L8-03 Overheat Pre-Alarm
(04AF) Operation Selection
L8-05 Input Phase Loss
(04B1) Protection Selection
L8-07 Output Phase Loss
(04B3) Protection Selection
L8-09 Output Ground Fault
(04B5) Detection Selection
L8-10 Heatsink Cooling Fan
(04B6) Operation Selection
L8-11 Heatsink Cooling Fan
(04B7) Off Delay Time
L8-12 Ambient Temperature
(04B8) Setting
L8-15 oL2 Characteristics
(04BB) Selection at Low Speeds
L8-18 Software Current Limit
(04BE) Selection
Frequency Reduction
L8-19
Rate during Overheat
(04BF)
Pre-Alarm
L8-27 Overcurrent Detection
(04DD) Gain
L8-29 Current Unbalance
(04DF) Detection (LF2)
306
LCD Display
0: Resistor overheat protection disabled
DB Resistor Prot
1: Resistor overheat protection enabled
0: Not Provided
Note:
1: Provided
An overheat alarm occurs when heatsink temperature exceeds
the L8-02 level.
OH Pre-Alarm Lvl
OH Pre-Alarm Sel 0: Ramp to stop. A fault is triggered.
0: Ramp to Stop 1: Coast to stop. A fault is triggered.
1: Coast to Stop 2: Fast Stop. Decelerate to stop using the deceleration time in
2: Fast-Stop C1-09. A fault is triggered.
3: Alarm Only 3: Continue operation. An alarm is triggered.
4: Run@L8-19 Rate 4: Continue operation at reduced speed as set in L8-19.
Selects the detection of input current phase loss, power supply
Inp Ph Loss Det voltage imbalance, or main circuit electrolytic capacitor
0: Disabled deterioration.
1: Enabled 0: Disabled
1: Enabled
Outp Ph Loss Det 0: Disabled
0: Disabled 1: Enabled (triggered by a single phase loss)
1: 1PH Loss Det 2: Enabled (triggered when two phases are lost)
2: 2/3PH Loss Det
Grnd Flt Det Sel 0: Disabled
0: Disabled 1: Enabled
1: Enabled
0: Run with timer (Fan operates only during run and for L8-11
Fan On/Off Sel
seconds after stop.)
0: Dur Run (OffDly)
1: Run always (Cooling fan operates whenever the drive is
1: Always On
powered up.)
Sets a delay time to shut off the cooling fan after the Run
Fan Delay Time command is removed when L8-10 = 0.
Enter the ambient temperature. This value adjusts the oL2
Ambient Temp detection level.
0: No oL2 level reduction below 6 Hz.
OL2 Sel @ L-Spd
1: oL2 level is reduced linearly below 6 Hz. It is halved at 0
0: Disabled
Hz.
1: Enabled
Soft CLA Sel 0: Disabled
0: Disabled 1: Enabled
1: Enabled
Specifies the frequency reference reduction gain at overheat
Fc Red dur OHAlm pre-alarm when L8-03 = 4.
Sets the gain for overcurrent detection as a percentage of the
motor rated current. Overcurrent is detected using the lower
OC Level
value between the overcurrent level of the drive or the value
set to L8-27.
For models 2A0004 to 2A0415, 4A0002 to 4A0675, and
5A0003 to 5A0242:
LF2 Flt Det Sel 0: Disabled
0: Disabled 1: Enabled (current and voltage detection)
1: Current&Voltage 2: Enabled (current detection)
2: Current Det Type 3: Enabled (voltage detection)
3: Voltage Det Type For models 4A0930 and 4A1200:
0: Disabled
1: Enabled (current detection)
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
Description
This parameter is not available in models
4A0930 and 4A1200.
Values Page
Default: 0
–
Range: 0, 1
<1>
Default:
–
Min.: 50 °C
Max.: 150 °C
Default: 3
–
Range: 0 to 4
Default: 1
–
Range: 0, 1
Default: 1
–
Range: 0 to 2
<1>
Default:
–
Range: 0, 1
Default: 0
–
Range: 0, 1
Default: 60 s
Min.: 0 –
Max.: 300
Default: 40 °C
Min.: -10 –
Max.: 50
Default: 1
–
Range: 0, 1
Default: 0
–
Range: 0, 1
Default: 0.8
Min.: 0.1 –
Max.: 0.9
Default: 300.0%
Min.: 0.0 –
Max.: 400.0
Default: 1
Range: 0 to 3 –
Range: 0, 1