YASKAWA HV600 Technical Reference page 433

VFD RUN COMMAND
DAMPER ACTUATOR OUTPUT
BAS INTERLOCK INPUT
VFD FREQUENCY REFERENCE
Z1-14 Run Delay Frequency Reference
VFD OUTPUT FREQUENCY
Figure 5.102 Run Delay with Preset Speed Example: Preset Speed with Run Delay
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Z1-16 to Z1-25: Bypass Energy Savings
This feature helps you save energy and decrease harmonics by automatically switching to Bypass while in Drive
Mode.
You can use one of two methods with Z1-16 [Energy Savings Mode] to switch into Energy Savings:
Frequency Only
When Z1-16 = 1 [Frequency], it will enable Energy Savings based on frequency only. The bypass will automatically
switch to Bypass when the unit meets these conditions for Z1-22 [Energy Savings Mode Time]:
• Drive frequency reference is in Z1-19 [Energy Savings Mode Frequency Reference Deadband] of Z1-17 [Energy
Savings Mode Frequency].
• Drive output frequency is in Z1-20 [Energy Savings Mode Output Frequency Deadband] of Z1-17 [Energy Savings
Mode Frequency].
Frequency and Output Current
When Z1-16 = 2 [Frequency + Current], it will enable Energy Savings based on frequency and output current. The
bypass will automatically switch to Bypass when it meets the Frequency Only conditions and the drive output current
is in Z1-21 [Energy Savings Mode Output Current Deadband] of Z1-18 [Energy Savings Mode Output Current
Level].
When the above conditions are met, the system:
1. Increases the drive frequency reference by the value in Z1-23 [Energy Savings Mode Frequency Reference
Increase].
2. Waits for the drive output frequency to align with the frequency reference
3. Sets the drive to baseblock
4. Removes the effect of Z1-23 from the drive frequency reference
5. Delays based on the time set to L2-03 [Minimum Baseblock Time]
6. Opens drive output contactor K2
7. Delays based on the time set to Z1-24 [Contactor Open Delay Time]
8. Closes Bypass contactor K3 and transfers to Bypass.
When the drive frequency reference is not in the Z1-19 [Energy Savings Mode Frequency Reference Deadband] of
Z1-17 [Energy Savings Mode Frequency], the system:
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Parameter Settings:
Z1-12 Run Delay Time = 10.0 sec
Z1-13 Pre Interlock Run Select = 1 (Enable)
Z1-14 Run Delay Frequency Reference = 30.0 Hz
Z1-15 Interlck Wait Time = 0.0 sec (Never Time Out)
5.14 Z: Bypass Parameters
Z1-12 Run Delay Time
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