YASKAWA CIMR-ACA4011 Instruction Manual page 140

L2: Power Loss Ridethrough
Name
Parameter
Number
Display
Momentary
Power Loss
Detection Selec-
tion
L2-01
PwrL Selection
Momentary
Power Loss Ride-
L2-02
through Time
PwrL Ridethru t
Momentary
Power Loss Mini-
mum Base Block
L2-03
Time
PwrL Baseblock t
Momentary
Power Loss Volt-
age Recovery
L2-04
Ramp Time
PwrL V/F Ramp t
Undervoltage
Detection Level
L2-05
PUV Det Level
Power Frequency
Fault Detection
L2-13 gain
FDV Gain
Undervoltage-
Detection Level
L2-21
Power UV Level
Detection Width
of Input Power
*3
L2-27
Frequency Error
FDV Level
* 1. The default depends on the MxC capacity. The value for a 200 V class MxC of 5.5 kW is given.
* 2. These are values for a 200 V class MxC. Double the value for a 400 V class MxC.
* 3. Applicable for the Varispeed AC with software versions PRG:1050 or later.
-44
5
Description
Enables and disables the momentary
power loss function.
0: Disabled. - MxC trips on (FDV) fault
when power is lost.
1: Power Loss Ridethrough Time - MxC
will restart if power returns within the
time set in L2-02.
2: CPU Power Active - MxC will restart
if power returns prior to control
power supply shut down.
Sets the power loss ridethrough time.
This value is dependent on the capacity of
the MxC. Enabled only when L2-01 = 1.
Sets the minimum time to wait to allow
the residual motor voltage to decay
before the MxC output turns back on dur-
ing power loss ridethrough. After a power
loss, if L2-03 is greater than L2-02, oper-
ation resumes after the time set in L2-03.
Sets the time it takes the output voltage to
return to the preset V/f pattern after speed
search (Current Detection Mode) is com-
plete.
Sets the PS undervoltage trip level of the
MxC. If this is set lower than the default,
additional AC input reactance or PS volt-
age may be necessary. Consult the factory
before changing this parameter setting.
Set the gain to detect a power frequency
fault (FDV).
If an FDV is detected when no momen-
tary power loss occurred, decrease the set
value in units of 0.1.
Set the undervoltage-detection level for
the input power voltage in volts.
Sets the frequency width in hertz that
detects the input power frequency error
(FDV). The customer needs not to set or
modify.
Control
Methods
Change
Setting
Default during
Open
Range
Run
V/f Loop
Vector
0 to 2 0 No A
0.0 to
0.5 s No A
2.5
0.1 to
0.7 s
No A
5.0
*1
0.0 to
1.5 s No A
5.0
150 to 190
No A
210 VDC
*2 *2
0.1 to
1.0 No A
2.0
150
100 to
No A
VAC
*2
200
*2
3.0 to
6.0 Hz No A
20.0
MEMO-
BUS Page
Flux
Register
Vector
A A 485H 6-56
A A 486H 6-56
6-56
A A 487H
6-60
6-56
A A 488H
6-60
A A 489H 6-56
A A 4CDH 6-56
A A 4D5H 6-56
A A 4F7H 6-57