YASKAWA CIMR-JA Series Installation & Start-Up Manual page 211

No. Name
Continuous Determines whether or not to hold the electrothermal
Electrothermal value when the power supply is interrupted.
L1-13
Operation 0: Disabled
Selection 1: Enabled
Use L2 parameters to configure drive functions for momentary power loss conditions.
Enables and disables the momentary power loss
function.
Momentary 0: Disabled - Drive trips on (Uv1) fault when power
Power Loss is lost.
L2-01
Operation 1: Power Loss Ride-Thru Time - Drive will restart if
Selection power returns within the Power Loss Ride-Thru Time.
2: CPU Power Active - Drive will restart if power
returns as long as the CPU is working.
Selects the Stall Prevention method used to prevent
excessive current during acceleration.
Stall 0: Disabled - Motor accelerates at active acceleration
Prevention rate. The motor may stall if load is too heavy or accel
L3-01 Selection time is too short.
during 1: General Purpose - When output current exceeds
Acceleration L3-02 level, acceleration stops. Acceleration will
continue when the output current level falls below the
L3-02 level.
Stall Used when L3-01 = 1.
Prevention 100% is equal to the drive rated current.
L3-02
Level during Decrease the set value if stalling or excessive current
Acceleration occurs with default setting.
When using a braking resistor, use setting "0". Setting
"3" is used in specific applications.
0: Disabled - The drive decelerates at the active
deceleration rate. If the load is too large or the
Stall deceleration time is too short, an ov fault may occur.
Prevention 1: General Purpose - The drive decelerates at the
L3-04 Selection active deceleration rate, but if the main circuit DC bus
during voltage reaches the Stall Prevention level,
Deceleration deceleration will stop. Deceleration will continue
once the DC bus level drops below the Stall
Prevention level.
4: Overexcitation Deceleration - Decelerates with the
flux level determined by n3-13 (Overexcitation Gain).
Selects the Stall Prevention method to use to prevent
drive faults during run.
0: Disabled - Drive runs a set frequency. A heavy load
may cause the drive to trip on an oC or oL fault.
1: Decel Time 1 - The drive will decelerate at Decel
Stall Time 1 (C1-02) if the output current exceeds the level
Prevention set by L3-06. Once the current level drops below the
L3-05
Selection L3-06 level, the drive will accelerate back to its
during Run frequency reference at the active acceleration rate.
2: Decel Time 2 - Same as setting 1 except the drive
decelerates at Decel Time 2 (C1-04).
When output frequency is 6 Hz or less, Stall
Prevention during run is disabled regardless of the
setting in L3-05.
YASKAWA ELECTRIC TOEP C710606 25B YASKAWA AC Drive J1000 Installation & Start-Up Manual
Description
L2: Momentary Power Loss
L3: Stall Prevention Function
Use L3 parameters to configure the Stall Prevention function.
B.2 Parameter Table
Mode Addr.
Range Def.
V/f
0, 1 1 O
0 to 2 0 O
0, 1
1 O
<63>
0 to 150 <7> O
0, 1, 4 1 S
0 to 2 1 O
Pg.
Hex
46D —
485 —
48F —
490 —
492 —
493 —
B
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