YASKAWA AC Drive-A1000 - Page 434

No.
(Addr.
Hex)
Name Description Values Page
L8-09
(4B5)
Output Ground Fault
Detection Selection
All Modes
0: Disabled
1: Enabled
Default:
<1>
Range: 0, 1
265
L8-10
(4B6)
Heatsink Cooling Fan
Operation Selection
All Modes
0: During run only. Fan operates only during run and for L8-11 seconds after
stop.
1: Fan always on. Cooling fan operates whenever the drive is powered up.
Default: 0
Range: 0, 1
265
L8-11
(4B7)
Heatsink Cooling Fan Off
Delay Time
All Modes
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
265
L8-12
(4B8)
Ambient Temperature
Setting
All Modes
Enter the ambient temperature. This value adjusts the oL2 detection level.
Default: 40 °C
Min.: -10
Max.: 50
265
L8-15
(4BB)
oL2 Characteristics
Selection at Low Speeds
All Modes
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
265
L8-18
(4BE)
Software Current Limit
Selection
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG OLV CLVV/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG OLV CLV
0: Disabled
1: Enabled
Default: 0
Range: 0, 1
266
L8-19
(4BF)
Frequency Reduction Rate
during Overheat Pre-Alarm
All Modes
Specifies the frequency reference reduction gain at overheat pre-alarm when
L8-03 = 4.
Default: 0.8
Min.: 0.1
Max.: 0.9
264
L8-27
(4DD)
Overcurrent Detection Gain
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLV
OLV/PM AOLV/PM CLV/PMOLV/PM AOLV/PM CLV/PM
Sets the gain for overcurrent detection as a percentage of the motor rated
current. Overcurrent is detected using the lower value between the overcurrent
level of the drive or the value set to L8-27.
Default: 300.0%
Min.: 0.0
Max.: 300.0
266
L8-29
(4DF)
Current Unbalance
Detection (LF2)
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLV
OLV/PM AOLV/PM CLV/PMOLV/PM AOLV/PM CLV/PM
0: Disabled
1: Enabled
Default: 1
Range: 0, 1
266
L8-35
(4EC)
Installation Method
Selection
All Modes
0: IP00 enclosure
1: Side-by-Side mounting
2: NEMA Type 1 enclosure
3: Finless model drive or external heatsink installation
Default: 2
<2>
Range: 0 to 3
266
L8-38
(4EF)
Carrier Frequency
Reduction
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PG OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f
OLV/PM
V/f w PG OLV
CLV/PM
CLV
0: Disabled
1: Enabled below 6 Hz
2: Enabled for the entire speed range
Default:
<3>
Range: 0 to 2
267
L8-40
(4F1)
Carrier Frequency
Reduction Off Delay Time
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG OLV CLVV/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG OLV CLV
Sets the time that the drive continues running with reduced carrier frequency
after the carrier reduction condition is gone. Setting 0.00 s disables the carrier
frequency reduction time.
Default:
<4>
Min.: 0.00 s
Max.: 2.00 s
267
L8-41
(4F2)
High Current Alarm
Selection
All Modes
0: Disabled
1: Enabled. An alarm is triggered at output currents above 150% of drive rated
current.
Default: 0
Range: 0, 1
267
L8-55
(45F)
Internal Braking Transistor
Protection
All Modes
0: Disabled. L8-55 should be disabled when using a regen converter or an
optional braking unit.
1: Protection enabled.
Default: 1
Range: 0, 1
267
<1> Default setting is dependent on parameters C6-01, Drive Duty Selection, and o2-04, Drive Model Selection.
<2> Parameter setting value is not reset to the default value when the drive is initialized.
B.10 L: Protection Function
434
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual