YASKAWA HV600

5.14 Z: Bypass Parameters
438 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
■ Z1-43: Soft Starter Delay Timer
No.
(Hex.)
Name Description
Default
(Range)
Z1-43
(85F0)
Soft Starter Delay Timer Sets the delay time between closing contactor K3 and energizing the soft starter. 2.0 s
(0.0 - 60.0 s)
■ Z1-44: Soft Starter Rampdown Timeout
No.
(Hex.)
Name Description
Default
(Range)
Z1-44
(85F1)
Soft Starter Rampdown
Timeout
Sets the maximum wait time for the current to be less than 5% of E2-01 after removing the soft
starter Run command.
15.0 s
(1.0 - 60.0 s)
■ Z1-50: Bypass Input Phase Loss Level
No.
(Hex.)
Name Description
Default
(Range)
Z1-50
(85F7)
Bypass Input Phase Loss
Level
The bypass measures the current unbalance between phases to detect input phase loss. 25.0%
(5.0 - 50.0%)
Sets the current unbalance level between phases as a percentage of E2-01 when operating in Bypass Mode. Use this
function with Z1-51 to detect input or output phase loss during bypass operation.
The unbalance level is determined by measuring the RMS current in each of the output phases. The amount of current
unbalance between the phases is calculated using the this formula:
Unbalance Level = (I
(max)
- I
(min)
) / I
(max)
× 100%
When the unbalance level is more than Z1-50 for longer than Z1-51, it triggers FB15 –Input Phase Loss and the drive
coasts to stop.
■ Z1-51: Bypass Input Phase Loss Delay
No.
(Hex.)
Name Description
Default
(Range)
Z1-51
(85F8)
Bypass Input Phase Loss
Delay
Sets the trip time for an input phase loss condition in Bypass Mode. 5.0 s
(0.0 - 30.0 s)
■ Z1-52: Input Phase Rotation Detection
No.
(Hex.)
Name Description
Default
(Range)
Z1-52
(85F9)
Input Phase Rotation
Detection
Sets bypass response when the Bypass Mode phase rotation is incorrect. 0
(0 - 2)
The unit ignores input phase rotation when operating in Drive Mode. Input phase rotation determines motor direction
when operating in Bypass Mode.
If input phase rotation is reversed and Z1-52 = 1, when operation starts in Bypass Mode, it will trigger an AL16 –
Input Phase Rotation alarm and operation continues.
If input phase rotation is reversed and Z1-52 = 2, when operation starts in Bypass Mode, it will trigger an FB16 –
Input Phase Rotation fault and the drive will coast to stop.
Controls the behavior of the bypass phase rotation detection when operating in Bypass Mode.
0 : Disabled
1 : Alarm
2 : Fault