Yaskawa iQpump Manual Supplement - Manual (Page 66)

66 YASKAWA TM.iQp.10 Technical Manual Supplement
Power Loss Ridethru
L2-01 0485
Momentary Power Loss
Detection Selection
PwrL Selection
Enables and disables the momentary power loss function.
0: Disabled - Drive trips on (Uv1) fault when power is lost.
1: PwrL Ride Thru t - Drive will restart if power returns within the time set
in L2-02. If a second power loss occurs within one hour, the drive will trip
on Uv1.*
2: CPU Power Active - Drive will restart if power returns prior to internal
power supply shut down. If a second power loss occurs within one hour,
the drive will remain in an undervoltage state for an additional 10-second
delay after power returns. With each additional power loss occurrence, the
time delay will increase. If the drive operates for one hour with no power
loss conditions detected, the time delay is cleared.*
* In order for a restart to occur, the run command must be maintained
throughout the ride thru period.
0 ~ 2 2 Programming
L2-02 0486
Momentary Power Loss
Ride-thru Time
PwrL Ridethru T
Determines the power loss ride-thru time. This value is dependent on the
capacity of the drive. Only effective when L2-01 = 1. 0.0 ~
25.5 sec
kVA
Dependent
Programming
L2-03 0487
Momentary Power Loss
Minimum Base Block
Time
PwrL Baseblock T
Used to allow the residual motor voltage to decay before the drive output
turns back on. After a power loss, if L2-03 is greater than L2-02, operation
resumes after the time set in L2-03.
0.1 ~ 5.0
sec
kVA
Dependent
Programming
L2-04 0488
Momentary Power Loss
Voltage Recovery Ramp
Time
PwrL V/f Ramp T
The time it takes the output voltage to return to the preset V/f pattern after
speed search (current detection mode) is complete. 0.0 ~ 5.0
sec
kVA
Dependent
Programming
L2-05 0489
Undervoltage Detection
Level
PUV Det Level Sets the drive's DC Bus undervoltage trip level. If this is set lower than the
factory setting, additional AC input reactance or DC bus reactance may be
necessary. Voltage
Class
Dependent
Voltage
Class
Dependent
Programming
Stall Prevention
L3-01 048F
Stall Prevention Selection
During Accel
StallP Accel Sel
0: Disabled (Motor accelerates at active acceleration, C1-01 or C1-03. The
motor may stall if load is too heavy or accel time is too short.)
1: General Purpose (When output current exceeds L3-02 level, acceleration
stops. It starts to accelerate at current value recovery.)
2: Intelligent (The active acceleration rate, C1-01 or C1-02, is ignored.
Acceleration is completed in the shortest amount of time w/o exceeding the
current value set in L3-02.
0 ~ 2 1 Programming
L3-02 0490
Stall Prevention Level
During Accel
StallP Accel Lvl
This function is enabled when L3-01 is “1” or “2”. Drive rated current is
100 %. Decrease the set value if stalling occurs at factory setting.
0 ~ 200 % 120 % Programming
L3-04 0492
Stall Prevention Selection
During Decel
StallP Decel Sel
0: Disabled (The drive decelerates at the active deceleration rate,
C1-02 or C1-04. If the load is too large or the deceleration time is too short,
an OV fault may occur.)
1: General Purpose (The drive decelerates at the active deceleration rate,
C1-02 or C1-04, but if the main circuit DC bus voltage reaches the stall
prevention level the output frequency will clamp. Deceleration will
continue once the DC bus level drops below the stall prevention level.)
2: Intelligent (The active deceleration rate is ignored and the drive
decelerates as fast as possible w/o hitting OV fault level.)
0 ~ 3 1 Programming
L3-05 0493
Stall Prevention Level
During Decel
StallP Run Sel
0: Disabled (drive runs a set frequency.) A heavy load may cause the drive
to trip on an OC fault.
1: Decel Time 1 (In order to avoid stalling during heavy loading, the drive
will start to decelerate at Decel time 1 (C1-02) if the output current exceeds
the level set by L3-06. Once the current level drops below the L3-06 level
the drive will accelerate back to its set frequency at the active acceleration
rate.)
2: Decel Time 2 (Same as setting 1 except the drive decelerates at Decel
Time 2 (C1-04).) For 6 Hz or less frequency, stall prevention function
during run is disabled regardless of L3-05 set.
0 ~ 2 1 Programming
L3-06 0494
Stall Prevention Level
During Running
StallP Run Level
This function is enabled when L3-05 is “1” or “2”.
Drive rated current is set as 100 %.
Normally, changing the setting is not required.
Decrease the set value if stalling occurs at factory setting.
30 ~ 200 % 120 % Programming
Parameter
No.
Addr.
Hex
Parameter Name
Digital Operator
Display
Description
Setting
Range
Factory
Setting
Menu
Location