YASKAWA CIMR-MC5A20P4 Instruction Manual page 234

User Constants
8.2.7 Protection Constants: L
Constant Constant
Number Number
Voltage recovery time
L2-04 L2-04
PwrL V/F Ramp t
Undervoltage detec-
tion level
L2 05 L2-05
PUV Det Level
KEB deceleration rate
L2-06 L2-06
KEB Frequency
* 1. The factory setting depends upon the Inverter capacity. The values for a 200 V class Inverter of 0.4 kW are given. See page
- 35.
* 2. These are values for a 200 V class Inverter. Value for a 400 V class Inverter is double.
Constant Constant
Number
Stall prevention
selection during accel
L3-01 L3 01
StallP Accel Sel
8
Stall prevention level
during accel
L3 02 L3-02
StallP Accel Lvl
Stall prevention limit
during accel
L3-03 L3 03
StallP CHP Lvl
Name
Description Description
Display
Sets the time required to return to
normal voltage at the completion of
a speed search, in units of one sec-
ond.
Set the time required for a 200 V Set the time required for a 200 V
class Inverter to recover from 0
V to 200 VAC.
(For the 400 V class Inverter, the
time from 0 V to 400 VAC.)
Sets the main circuit under voltage
(UV) detection level (main circuit
DC voltage) in V units.
Usually setting is not necessary. Usually setting is not necessary.
Insert an AC reactor to lower the
main circuit undervoltage detec-
tion level.
Restores the operating conditions
for momentary power loss by ap-
plying a frequency deceleration to plying a frequency deceleration to
create inertia energy when a power
loss occurs, and thus avoid the
power loss.
Stall Prevention: L3
J
Name
Description
Display
0: Disabled (Acceleration as set.
With a heavy load, the motor
may stall.)
1: Enabled (Acceleration stopped
when L3-02 level is exceeded.
Acceleration starts again when
the current is returned.) the current is returned )
2: Intelligent acceleration mode
(Using the L3-02 level as a ba-
sis, acceleration is automatically
adjusted. Set acceleration time
is disregarded.)
Effective when L3-01 is set to 1 or
2.
Set as a percentage of Inverter rated
current. current.
Usually setting is not necessary.
The factory setting reduces the
set values when the motor stalls.
Sets the lower limit for stall preven-
tion during acceleration, as a per-
centage of the Inverter rated cur-
rent, when operation is in the fre- , p
quency range above the maximum
voltage frequency (E1-06.)
Usually setting is not necessary.
Setting Setting Factory Factory
Range Range Setting Setting
0.0 to 0.0 to
5.0
150 to
210 0
*2
0.0 to 0.0 to
100.0
Setting Factory Setting Factory
Range Setting
0 to 2 0 to 2
0 to 200 0 to 200
0 to 100 0 to 100
b th i
- 26
Change Change Control Methods
during during
Open Loop
Opera- Opera-
Vector
tion tion
0.3 0 3 A A
190
A A
*2 *2
0.0 0 0 A A
Control Methods
Change g
during during
Open Loop
Opera-
Vector
tion
1 1 B B
B B
150 150
50 50 A A
Page Page
Flux Vector
A A - 50 50
A A - 50 - 50
A A - 50 50
Page
Flux Vector
- 51 - 51
- 51 - 51
- 52 - 52