YASKAWA HV600 Technical Reference page 434

5.14 Z: Bypass Parameters
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.
DRIVE OUTPUT CONTACTOR
BYPASS CONTACTOR
Energy Savings Fref Deadband (Z1-19)
Energy Savings Frequency Ref (Z1-17)
Energy Savings Fref Deadband (Z1-19)
DRIVE FREQUENCY REFERENCE
Energy Savings Out Cur Deadband (Z1-21)
Energy Savings Output Cur Level (Z1-18)
Energy Savings Out Cur Deadband (Z1-21)
DRIVE OUTPUT CURRENT
Energy Savings Out Freq Deadband (Z1-20)
Energy Savings Frequency Ref (Z1-17)
Energy Savings Out Freq Deadband (Z1-20)
DRIVE OUPUT FREQUENCY
■
Z1-16: Energy Savings Mode
No.
Name
(Hex.)
Z1-16 Energy Savings Mode
(85D5)
0 : Disabled
1 : Frequency
2 : Frequency + Current
■
Z1-17: Energy Savings Frequency Ref
No.
Name
(Hex.)
Z1-17 Energy Savings Frequency
Ref
(85D6)
434
t1 t2 t3 t4
Energy Savings
Mode Time (Z1-22)
Start Sequence to
Enter Energy
Savings Mode
Drive Enters Baseblock
Figure 5.103 Drive Bypass Energy Savings Mode Sequence Example
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.
Sets the value of the drive frequency reference for use in comparison to enter or exit Energy Savings
Mode.
t5 t6 t7 t8 t9
Energy Savings Freq Ref Increase (Z1-23)
Drive Exits Baseblock
Energy Savings Mode
Start Sequency to
Exit Energy
Savings Mode
Drive Enters Baseblock
Description
Description
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
t12 t13 t14 t15 t16
t10 t11
Drive Exits
Baseblock and
Starts
Speed Search
Default
(Range)
(0 - 2)
Default
(Range)
60.00 Hz
(0.00 - Max. Freq.)
0