9.17 Z: Bypass Parameters
666 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
No.
(Hex.)
Name Description
Default
(Range)
Ref.
Z1-20
(85D9)
Energy Savings Out Freq
Deadband
Sets the tolerance around the drive output frequency value during comparisons to enter or
exit Energy Savings Mode.
Note:
Units, default, and range are different for different o1-03 [Frequency Display Unit
Selection] values.
0.50 Hz
(0.00 - 5.00 Hz)
435
Z1-21
(85DA)
Energy Savings Out Cur
Deadband
Sets the tolerance around the drive output current value during comparisons to enter or exit
Energy Savings Mode as a percentage of motor rated current.
15.0%
(0.0 - 30.0%)
435
Z1-22
(85DB)
Energy Savings Mode
Time
Sets the length of time that the drive frequency reference and drive output frequency must
be in the set limits before transferring to Energy Savings Mode.
30 s
(10 - 3600 s)
435
Z1-23
(85DC)
Energy Savings Freq Ref
Increase
Sets the value to add to the drive Frequency Reference when transferring to Bypass Energy
Savings Mode.
Note:
Units, default, and range are different for different o1-03 [Frequency Display Unit
Selection] values.
6.00 Hz
(0.00 - 10.00 Hz)
435
Z1-24
(85DD)
Contactor Open Delay Sets the time to delay after commanding the drive output contactor K2 or bypass contactor
K3 or 2-Motor OR/AND contactors K4 and K5 to open to let the contacts open.
0.2 s
(0.0 - 5.0 s)
435
Z1-25
(85DE)
Contactor Close Delay Sets the time to delay after commanding the drive output contactor K2 or bypass contactor
K3 or 2-Motor OR/AND contactors K4 and K5 to close to let the contacts close.
0.2 s
(0.0 - 5.0 s)
435
Z1-27
(85E0)
Brownout Voltage Level Sets the voltage level below which is a brownout condition. 98 V
(0 - 150 V)
436
Z1-28
(85E1)
Brownout Detection Time Sets the length of time that the Bypass voltage must be less than the Brownout Voltage
Level before the Bypass will trigger a Brownout fault.
3.0 s
(1.0 - 300.0 s)
436
Z1-29
(85E2)
Blackout Voltage Level Sets the voltage level below which is a blackout condition. When the input voltage is less
than this level, the Bypass will trigger a Blackout fault.
75 V
(0 - 150 V)
436
Z1-31
(85E4)
Loss of Load Detection
Select
Sets the function to detect loss of load.
0 : Disabled
1 : Enable and Fault
2 : Enable and Alarm
0
(0 - 2)
436
Z1-32
(85E5)
Loss of Load Drive
Frequency
Sets the value to which the drive output frequency must be equal to or more than for the
drive to detect a loss of load.
60.00 Hz
(0.00 - Max Freq.)
436
Z1-33
(85E6)
Loss of Load Drive Out
Current
The drive output frequency must be equal to or more than this level for the drive to detect a
loss of load.
0.0 A
(0.0 - 999.9 A)
436
Z1-34
(85E7)
Loss of Load Drive Det
Time
The loss of load conditions must be met for the length of time in this parameter before the
bypass will detect a loss of load in Drive Mode.
1.0 s
(0.0 - 300.0 s)
436
Z1-35
(85E8)
Loss of Load Bypass
Current
The motor current must be equal to or less than this value to detect a loss of load. 0.0 A
(0.0 - 999.9 A)
436
Z1-36
(85E9)
Loss of Load Bypass Det
Time
The motor current must be equal to or less than this value to detect a loss of load. 1.0 s
(0.0 - 300.0 s)
437
Z1-39
(85EC)
Drive/Bypass Source
Select
Sets the function to select the Drive or the Bypass as the source of Drive/Bypass Mode
selection.
0 : Keypad
1 : Digital Input
2 : Serial Communications
3 : Option PCB
0
(0 - 3)
437
Z1-40
(85ED)
Auto Transfer Delay
Time
When you enable Auto Transfer and the bypass detects a drive fault, the bypass controller
will wait for the length of time set in this parameter before it switches to bypass.
0.0 s
(0.0 - 300.0 s)
437
Z1-42
(85EF)
Soft Starter Selection Selects the soft starter device type when you use it with a bypass.
0 : Not Installed – Contactor Only
1 : Installed – Coast To Stop
2 : Installed – Ramp To Stop
Note:
When [Z1-42 = 1 or 2] to enable the soft starter, the bypass automatically disables
welded contactor detection. Parameter Z1-55 [Welded Contactor Detection] does will
not have an effect.
0
(0 - 2)
437
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)
438
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.
If the current is not less than 5% of E2-01 in the set time, the soft starter digital output
turns off.
15.0 s
(1.0 - 60.0 s)
438
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