YASKAWA P1000 Technical Manual page 169

7. Then the drive catches a spinning motor via Speed Search and follows frequency reference to take control.
Refer to Figure 5.61 for an example of the sequence that is followed when entering and exiting the Energy Savings Mode.
DRIVE OUTPUT CONTACTOR
BYPASS CONTACTOR
ENERGY FREF DBND (Z1-19)
ENERGY FREQ (Z1-17)
ENERGY FREF DBND (Z1-19)
DRIVE FREQUENCY REFERENCE
ENERGY IOUT DBND (Z1-21)
OUTPUT IOUT LVL (Z1-18)
ENERGY IOUT DBND (Z1-21)
DRIVE OUTPUT CURRENT
ENERGY FREQ DBND (Z1-20)
ENERGY FREQ (Z1-17)
ENERGY FREQ DBND (Z1-20)
DRIVE OUPUT FREQUENCY
n Z1-16: Energy Savings Mode
Enables and disables the Energy Savings Mode.
No.
Z1-16
Setting 0: Disable
Setting 1: Enable (Freq)
Setting 2: Enable (Freq + Output Current)
n Z1-17: Energy Savings Mode Frequency
Sets the value of the drive frequency reference for use in comparison to enter or exit Energy Savings mode.
No.
Z1-17
<1> Values are given in Hz, but actual values are dependent upon unit settings using drive parameters o1-03, o1-09, o1-10, and o1-11.
n Z1-18: Energy Savings Mode Output Current Level
Allows system to switch when the output current rises above this level of motor rated current for time specified in Z1-22.
No.
Z1-18
YASKAWA SIEP YAIP1B 01B YASKAWA AC Drive – P1000 Bypass Technical Manual
t1 t2 t4
t3
Energy
Savings
Time (Z-122)
Start Sequence to
Enter Energy
Savings Mode
Drive Enters Baseblock
Figure 5.61 Drive Bypass Energy Savings Mode Sequence Example
Name
Energy Savings Mode Enable
Name
Energy Savings Mode Frequency
Name
Energy Savings Mode Output Current Level
t5 t6 t7 t8 t9
Energy Fref Increase (Z1-23)
Drive Exits Baseblock
Energy Savings Mode
Start Sequency to
Exit Energy
Savings Mode
Drive Enters Baseblock
5.13 Z: Bypass Parameters
t12 t13 t14 t15 t16
t10 t11
Drive Exits
Baseblock and
Starts
Speed Search
Setting Range
0 to 2
Setting Range
<1>
0.0 to 60.0 Hz
Setting Range
0.0 to 100.0%
5
Default
0
Default
<1>
60.0 Hz
Default
0.0%
169