YASKAWA
SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
201
b3-02: SpeedSearch Deactivation Current
b3-03: Speed Search Deceleration Time
L2-03: Minimum Baseblock Time
L2-04: Powerloss V/f Recovery Ramp Time
Figure 5.19 Speed Search Selection at Start
Note:
Set the lower limit of the delay time to
b3-05
for when Speed Search starts.
■
Speed Search and Operation Conditions
These conditions apply to Speed Search operation. Set
b3-24 [Speed Search Method Selection]
before you do Speed
Search.
•
Do Speed Search with each Run Command
The drive ignores a Speed Search command from the external terminals.
•
Use an MFDI to do an External Speed Search Command
To use an MFDI to do Speed Search, input the Run command at the same time that terminal Sx set for Speed Search
activates, or after Speed Search activates.
Set Speed Search to
H1-xx
to do the function externally. You cannot set external Speed Search 1 and 2 at the same
time.
Table 5.21 Execute Speed Search via the Digital Input Terminals
H1-xx Setting
Name
Current Detection 2
Speed Estimation
61
Speed Search from Fmax
ON: Speed Search starts from
E1-04 [Maximum Output
Frequency]
.
External Speed Search commands 1 and 2 work the
same.
The drive estimates the motor speed, then starts Speed
Search from the estimated speed.
62
Speed Search from Fref
ON: Speed Search starts from the frequency reference
immediately before you input the Speed Search
command.
•
Do Speed Search with Each Auto Restart
Set
L5-01 [Number of Auto-Restart Attempts] = 1
or more. After an Auto Restart fault, the drive automatically does
Speed Search.
•
Do Speed Search after Momentary Power Loss
Set
L2-01 =1, 2 [Power Loss Ride Through Select = Enabled for L2-02 Time, Enabled while CPU Power Active]
.
•
Do Speed Search after You Clear the External Baseblock Command
When there is an active Run command and the output frequency is higher than the minimum frequency, you must
clear the external baseblock command to do Speed Search.
■
b3-01: Speed Search at Start Selection
No.
(Hex.)
Name
Description
Default
(Range)
b3-01
(0191)
Speed Search at Start
Selection
Sets the Speed Search at Start function where the drive will perform Speed Search with each Run
command.
0
(0, 1)
0 : Disable
Enter a Run command to start to operate the drive at the minimum output frequency.
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Страница 454: ...5 14 Z Bypass Parameters 454 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
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