YASKAWA
TOEPYAIGA8002B GA800 Drive Programming
479
When these two conditions are correct, this function is enabled:
•
L8-03 = 4 [Overheat Pre-Alarm Ope Selection = Run@L8-19 Rate]
•
oH
alarm is output
■
L8-20: Control Fault & Step Out Detect
No.
(Hex.)
Name
Description
Default
(Range)
L8-20
(04C0)
Expert
Control Fault & Step Out
Detect
Sets operation after the drive detects a
CF
fault when
A1-02 = 4 [Control Method Selection =
Advanced Open Loop Vector]
.
1
(0 - 2)
If you enter a Stop command but it cannot stop drive operation, the drive will detect
CF
.
0 : Disabled
1 : CF/STPo Detection Enabled
2 : CF ALM/Stop
The drive stops DC injection braking as specified by the value of
b2-03 [DC Inject Braking Time at Start]
.
Note:
•
When
A1-02 = 4
, control will not be stable if you do not do Rotational Auto-Tuning. This can cause
CF
faults if you ramp to stop. If the
drive detects
CF
, do Rotational Auto-Tuning and Line-to-Line Resistance Tuning. Also, do Line-to-Line Resistance Tuning.
•
If you set
A1-02 = 4
and set these parameters, the drive can detect
CF
because it cannot stop the operation in some load conditions. Make
sure that you do Rotational Auto-Tuning and Line-to-Line Resistance Tuning correctly and then set
L8-20 = 0
.
–
d5-01 = 1 [Torque Control Selection = Torque Control]
–
L3-11 = 1 [Overvoltage Suppression Select = Enabled]
–
Decreased
L7-01 to L7-04 [Torque Limit]
.
■
L8-27: Overcurrent Detection Gain
No.
(Hex.)
Name
Description
Default
(Range)
L8-27
(04DD)
Overcurrent Detection Gain
Sets the PM motor overcurrent detection level as a percentage of the motor rated current value.
300.0%
(0.0 - 1000.0%)
Note:
•
The overcurrent detection function detects the lower of these two values:
–
Drive overcurrent level
–
Motor rated current ×
L8-27
/ 100
•
Set
L7-xx [Torque Limit]
parameters <
L8-27
.
•
When you set
L8-27 = 0.0
, it disables this function. In usual conditions, do not set
L8-27 = 0.0
. If the drive rated current is much higher
than the motor rated current, PM motor magnets can demagnetize if current flows at the drive overcurrent detection level.
■
L8-29: Output Unbalance Detection Sel
No.
(Hex.)
Name
Description
Default
(Range)
L8-29
(04DF)
Output Unbalance Detection
Sel
Sets the function to detect
LF2
.
1
(0, 1)
This function prevents damage to PM motors. Current unbalance can heat a PM motor and demagnetize the magnets.
When the current is unbalanced, the drive will detect
LF2
to stop the motor and prevent damage to the motor.
0 : Disabled
1 : Enabled
■
L8-31: LF2 Detection Time
No.
(Hex.)
Name
Description
Default
(Range)
L8-31
(04E1)
LF2 Detection Time
Sets the LF2 [Output Current Imbalance] detection time.
3
(1
–
100)
V/f
CL-V/f
OLV
CLV
AOLV
OLV/PM
OLV/PM AOLV/PM CLV/PM
EZOLV
V/f
CL-V/f
OLV
CLV
AOLV
OLV/PM
OLV/PM AOLV/PM CLV/PM
EZOLV
V/f
CL-V/f
OLV
CLV
AOLV
OLV/PM
OLV/PM AOLV/PM CLV/PM
EZOLV
V/f
CL-V/f
OLV
CLV
AOLV
OLV/PM
OLV/PM AOLV/PM CLV/PM
EZOLV
