L4: speed detection, L5: fault restart – Yaskawa AC Drive P1000 Bypass Technical Manual User Manual
Page 251
No.
(Addr.
Hex)
Name
Description
Values
Page
L3-04
(492)
Stall Prevention Selection
during Deceleration
0: Disabled. Deceleration at the active deceleration rate. An ov fault may
occur.
1: General purpose. Deceleration is paused when the DC bus voltage exceeds
the Stall Prevention level.
2: Intelligent. Decelerate as fast as possible while avoiding ov faults.
3: Stall Prevention with braking resistor. Stall Prevention during deceleration
is enabled in coordination with dynamic braking.
4: High Flux Brake
5: High Flux Brake 2
Default: 1
Range: 0 to 5
L3-06
(494)
Stall Prevention Level
during Run
Enabled when L3-05 is set to 1 or 2. 100% is equal to the drive rated current. Default: 120%
Min.: 30
Max.: 120
<1>
L3-11
(4C7)
Overvoltage Suppression
Function Selection
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.
Default: 0
Range: 0, 1
L3-25
(46F)
Load Inertia Ratio
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
Description
Values
Page
L4-05
(49D)
Frequency Reference Loss
Detection Selection
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: 0
Range: 0, 1
L4-06
(4C2)
Frequency Reference at
Reference Loss
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.: 0.5
Max.: 180.0
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: 0
Range: 0, 1
B.9 L: Protection Function
YASKAWA SIEP YAIP1B 01A YASKAWA AC Drive – P1000 Bypass Technical Manual
251
B
Parameter List