L4: speed detection, L5: fault restart – Yaskawa AC Drive Z1000 Bypass Technical Manual User Manual
Page 325
No.
(Addr.
Hex)
Name
Description
Values
Page
L3-04
(492)
Stall Prevention Selection
during Deceleration
StallP Decel Sel
0: Disabled. Deceleration at the active deceleration rate. An ov fault may
occur.
0: Disabled
1: General purpose.
1: General Purpose
Deceleration is paused when the DC bus voltage exceeds the Stall Prevention
level.
2: Intelligent.
2: Intelligent
Decelerate as fast as possible while avoiding ov faults.
4: Overexcitation
4: High Flux Brake
Deceleration. Decelerates while increasing the motor flux
5: Overexcitation Deceleration 2.
5: High Flux Brake2
Adjust the deceleration rate according to the DC bus voltage.
Default: 1
Range: 0 to 2; 4, 5
L3-06
(494)
Stall Prevention Level
during Run
StallP Run Level
Enabled when L3-05 is set to 1 or 2. 100% is equal to the drive rated current. Default:
<1>
Min.: 30%
Max.: 150%
<1>
L3-11
(4C7)
Overvoltage Suppression
Function Selection
OV Inhibit Sel
Enables or disables the ov suppression function, which allows the drive to
change the output frequency as the load changes to prevent an ov fault.
0: Disabled
0: Disabled
1: Enabled
1: Enabled
Default: 0
Range: 0, 1
L3-25
(46F)
Load Inertia Ratio
Load Inertia Rat
Sets the ratio between the motor and machine inertia.
Default: 1.0
Min.: 1.0
Max.: 1000.0
<1> Upper limit is dependent on parameter L8-38, Frequency Reduction Selection.
u
L4: Speed Detection
No.
(Addr.
Hex)
Name
LCD Display
Description
Values
Page
L4-05
(49D)
Frequency Reference
Loss Detection Selection
Ref Loss Sel
0: Stop
1:
Run@L4-06PrevRef
0: Stop. Drive stops when the frequency reference is lost.
1: Run. Drive runs at a reduced speed when the frequency
reference is lost.
Default: 1
Range: 0, 1
L4-06
(4C2)
Frequency Reference at
Reference Loss
Fref at Floss
Sets the percentage of the frequency reference that the drive
should run with when the frequency reference is lost.
Default: 80.0%
Min.: 0.0
Max.: 100.0
u
L5: Fault Restart
No.
(Addr.
Hex)
Name
LCD Display
Description
Values
Page
L5-01
(49E)
Number of Auto Restart
Attempts
Num of Restarts
Sets the number of times the drive may attempt to restart after
the following faults occur: GF, LF, oC, ov, PF, oL1, oL2, oL3,
STo, Uv1.
Default: 0
Min.: 0
Max.: 10
L5-02
(49F)
Auto Restart Fault
Output Operation
Selection
Restart Sel
0: Flt Outp Disabld
1: Flt Outp Enabled
0: Fault output not active.
1: Fault output active during restart attempt.
Default: 0
Range: 0, 1
L5-03
(4A0)
Time to Continue
Making Fault Restarts
Max Restart Time
Enabled only when L5-05 is set to 0. Causes a fault if a fault
restart cannot occur after the set time passes.
Default: 180.0 s
Min.: 0.0
Max.: 600.0
L5-04
(46C)
Fault Reset Interval
Time
Flt Reset Wait T
Sets the amount of time to wait between performing fault
restarts.
Default: 10.0 s
Min.: 0.5
Max.: 600.0
L5-05
(467)
Fault Reset Operation
Selection
Fault Reset Sel
0: Continuous
1: Use L5-04 Time
0: Continuously attempt to restart while incrementing restart
counter only at a successful restart (same as F7 and G7).
1: Attempt to restart with the interval time set in L5-04 and
increment the restart counter with each attempt (same as V7).
Default: 1
Range: 0, 1
B.9 L: Protection Function
YASKAWA ELECTRIC SIEP YAIZ1B 01D YASKAWA AC Drive – Z1000 Bypass Technical Manual
325
B
Parameter List