YASKAWA H6B1A002, Technical Reference

Page: 434 / 794

5.14 Z: Bypass Parameters
434 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
1. Transfers motor control to the drive
2. Opens Bypass contactor K3 while the drive stays baseblocked
3. Delays based on the sum of
Z1-24 [Contactor Open Delay Time] and L2-03 [Minimum Baseblock Time]
4. Closes drive output contactor K2
5. Delays based on the time set to
Z1-25 [Contact Close Delay Time]
6. Releases the drive from baseblock
7. The drive uses Speed Search to catches a spinning motor and follows the frequency reference to take control.
The following figure shows an example of the sequence that is followed when entering and exiting the Energy
Savings Mode.
Figure 5.103 Drive Bypass Energy Savings Mode Sequence Example
■
Z1-16: Energy Savings Mode
No.
(Hex.)
Name Description
Default
(Range)
Z1-16
(85D5)
Energy Savings Mode When you enter a Run command, it asserts the damper actuator output. When you program an input
for Interlock and the time set to this parameter expires before the Interlock input activates, it will
trigger a fault. 0
(0 - 2)
0 : Disabled
1 : Frequency
2 : Fre Current
■
Z1-17: Energy Savings Frequency Ref
No.
(Hex.)
Name Description
Default
(Range)
Z1-17
(85D6)
Energy Savings Frequency
Ref Sets the value of the drive frequency reference for use in comparison to enter or exit Energy Savings
Mode. 60.00 Hz
(0.00 - Max. Freq.)
DRIVE FREQUENCY REFERENCE
DRIVE OUPUT FREQUENCY
DRIVE OUTPUT CONTACTOR
BYPASS CONTACTOR
Energy Savings Mode
(L
2
-03
)
(Z
1
-24
)
Contactor Open Delay (Z1-24)
Contactor Close Delay
(Z
1
-25
)
Drive Enters Baseblock
Start Sequency to
Exit Energy
Savings Mode
Drive Enters Baseblock
Start Sequence to
Enter Energy
Savings Mode
Drive Exits
Baseblock and
Starts
Speed Search
DRIVE OUTPUT CURRENT
t1 t2
t3 t4 t5 t6 t7 t8
t10 t11
t12 t13
t14 t15
Min Baseblock
T
ime
(L
2
-03
)
t16
Drive Exits Baseblock
(Z
1
-25
)
t9
Energy Savings Fref Deadband (Z1-19)
Energy Savings Frequency Ref (Z1-17)
Energy Savings Fref Deadband (Z1-19)
Energy Savings Out Cur Deadband (Z1-21)
Energy Savings Output Cur Level (Z1-18)
Energy Savings Out Freq Deadband (Z1-20)
Energy Savings Out Cur Deadband (Z1-21)
Energy Savings Out Freq Deadband (Z1-20)
Energy Savings Frequency Ref (Z1-17)
Energy Savings Freq Ref Increase (Z1-23)
Energy Savings
Mode Time (Z1-22)