Yaskawa A1000 6-Phase/12-Pulse Input - Manual (Page 80)

No. Name Description
L8-10
(04B6)
Heatsink Cooling Fan
Operation Selection
0: Run with timer (Fan operates only
during run and for L8-11 seconds after
stop.)
1: Run always (Cooling fan operates
whenever the drive is powered up.)
L8-11
(04B7)
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.
L8-12
(04B8)
Ambient Temperature
Setting
Enter the ambient temperature. This value
adjusts the oL2 detection level.
L8-15
(04BB)
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.
L8-18
(04BE)
Software Current Limit
Selection
0: Disabled
1: Enabled
L8-19
(04BF)
Frequency Reduction
Rate during Overheat
Pre-Alarm
Specifies the frequency reference reduction
gain at overheat pre-alarm when L8-03 = 4.
L8-27
(04DD)
Overcurrent Detection
Gain
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.
L8-29
(04DF)
Current Unbalance
Detection (LF2)
0: Disabled
1: Enabled (current and voltage
detection)
2: Enabled (current detection)
3: Enabled (voltage detection)
L8-32
(04E2)
Cooling Fan Failure
Selection
Determines drive response when a fault
occurs with the internal cooling fan.
0: Ramp to stop
1: Coast to stop
2: Fast stop (Decelerate to stop using the
deceleration time set to C1-09)
3: Alarm only (“FAn” will flash)
4: Continue operation at reduced speed as
set to L8-19.
L8-35
(04EC)
Installation Method
Selection
0: IP00/Open-Chassis enclosure
1: Side-by-Side mounting
2: IP20/NEMA Type 1 enclosure
3: Finless model drive or external heatsink
installation
Set this parameter to 3 for all 6-Phase/12-
Pulse Flange and Non-Flange models.
L8-38
(04EF)
Carrier Frequency
Reduction
0: Disabled
1: Enabled below 6 Hz
2: Enabled for the entire speed range
Default setting is determined by parameters
A1-02, Control Method Selection, and
o2-04, Drive Model Selection.
No. Name Description
L8-40
(04F1)
Carrier Frequency
Reduction Off Delay
Time
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.
L8-41
(04F2)
High Current Alarm
Selection
0: Disabled
1: Enabled. An alarm is triggered at output
currents above 150% of drive rated current.
L8-55
(045F)
Internal Braking
Transistor Protection
0: Disabled. Disable when using a regen
converter or optional braking unit.
1: Protection enabled.
L8-78
(02CC)
Power Unit Output
Phase Loss Protection
Enables motor protection in the event of
output phase loss.
0: Disabled
1: Enabled
L8-93
(073C)
LSo Detection Time at
Low Speed
Sets the amount of time until baseblock is
executed after detecting pull-out at low
speed.
L8-94
(073D)
LSo Detection Level at
Low Speed
Determines the detection level of pull-out
at low speed.
L8-95
(073F)
Average LSo
Frequency at Low
Speed
Sets the average number of times pull-out
can occur at low speed.
o1-03
Digital Operator
Display Selection
0: 0.01 Hz
1: 0.01% (100% = E1-04)
2: r/min (calculated using the number of
motor poles setting in E2-04, E4-04, or
E5-04)
3: User-selected units (set by o1-10 and
o1-11)
Default setting is determined by parameter
A1-02, Control Method Selection.
T1-01
Auto-Tuning Mode
Selection
0: Rotational Auto-Tuning
1: Stationary Auto-Tuning 1
2: Stationary Auto-Tuning for Line-to-Line
Resistance
3: Rotational Auto-Tuning for V/f Control
(necessary for Energy Savings and Speed
Estimation Speed Search)
4: Stationary Auto-Tuning 2
5: Stationary Auto-Tuning 3
8: Inertia Tuning (perform Rotational Auto-
Tuning prior to Inertia Tuning)
9: ASR Gain Tuning (perform Rotational
Auto-Tuning prior to ASR Gain Auto-
Tuning)
9 Parameter Table
80 YASKAWA TOEP YAIA1U 02A YASKAWA AC Drive – A1000 6-Phase/12-Pulse Input Installation Manual