YASKAWA AC Drive-A1000 Technical Manual page 434

B.10 L: Protection Function
No.
(Addr. Name
Hex)
L8-09 Output Ground Fault
(4B5) Detection Selection
L8-10 Heatsink Cooling Fan
(4B6) Operation Selection
L8-11 Heatsink Cooling Fan Off
(4B7) Delay Time
L8-12 Ambient Temperature
(4B8) Setting
L8-15 oL2 Characteristics
(4BB) Selection at Low Speeds
L8-18 Software Current Limit
(4BE) Selection
L8-19 Frequency Reduction Rate
(4BF) during Overheat Pre-Alarm
L8-27
Overcurrent Detection Gain
(4DD)
L8-29 Current Unbalance
(4DF) Detection (LF2)
L8-35 Installation Method
(4EC) Selection
L8-38 Carrier Frequency
(4EF) Reduction
L8-40 Carrier Frequency
(4F1) Reduction Off Delay Time
L8-41 High Current Alarm
(4F2) Selection
L8-55 Internal Braking Transistor
(45F) Protection
<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.
434
All Modes
0: Disabled
1: Enabled
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.
All Modes
Sets a delay time to shut off the cooling fan after the Run command is removed
when L8-10 = 0.
All Modes
Enter the ambient temperature. This value adjusts the oL2 detection level.
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.
V/f V/f V/f V/f V/f w PG V/f w PG V/f w PG V/f w PG OLV OLV OLV OLV
OLV/PM OLV/PM AOLV/PM AOLV/PM CLV/PM CLV/PM
0: Disabled
1: Enabled
All Modes
Specifies the frequency reference reduction gain at overheat pre-alarm when
L8-03 = 4.
V/f V/f V/f w PG V/f w PG OLV OLV
OLV/PM OLV/PM OLV/PM OLV/PM AOLV/PM AOLV/PM AOLV/PM AOLV/PM CLV/PM CLV/PM CLV/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.
V/f V/f V/f w PG V/f w PG OLV OLV
OLV/PM OLV/PM OLV/PM OLV/PM AOLV/PM AOLV/PM AOLV/PM AOLV/PM CLV/PM CLV/PM CLV/PM CLV/PM
0: Disabled
1: Enabled
All Modes
0: IP00 enclosure
1: Side-by-Side mounting
2: NEMA Type 1 enclosure
3: Finless model drive or external heatsink installation
V/f V/f V/f V/f V/f w PG V/f w PG V/f w PG V/f w PG OLV OLV OLV OLV
OLV/PM OLV/PM OLV/PM OLV/PM AOLV/PM AOLV/PM CLV/PM CLV/PM CLV/PM CLV/PM
0: Disabled
1: Enabled below 6 Hz
2: Enabled for the entire speed range
V/f V/f V/f V/f V/f w PG V/f w PG V/f w PG V/f w PG OLV OLV OLV OLV
OLV/PM OLV/PM AOLV/PM AOLV/PM CLV/PM CLV/PM
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.
All Modes
0: Disabled
1: Enabled. An alarm is triggered at output currents above 150% of drive rated
current.
All Modes
0: Disabled. L8-55 should be disabled when using a regen converter or an
optional braking unit.
1: Protection enabled.
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
Description
CLV CLV CLV CLV
CLV CLV
CLV CLV
CLV CLV CLV CLV
CLV CLV CLV CLV
Values Page
<1>
Default:
265
Range: 0, 1
Default: 0
265
Range: 0, 1
Default: 60 s
Min.: 0 265
Max.: 300
Default: 40 °C
Min.: -10 265
Max.: 50
Default: 1
265
Range: 0, 1
Default: 0
266
Range: 0, 1
Default: 0.8
Min.: 0.1 264
Max.: 0.9
Default: 300.0%
Min.: 0.0 266
Max.: 300.0
Default: 1
266
Range: 0, 1
<2>
Default: 2
266
Range: 0 to 3
<3>
Default:
267
Range: 0 to 2
<4>
Default:
267
Min.: 0.00 s
Max.: 2.00 s
Default: 0
267
Range: 0, 1
Default: 1
267
Range: 0, 1