YASKAWA CIMR-F7A Instruction Manual page 265

Related Constants
Con-
stant
Number
Speed search
selection
(current
b3-01
detection or
speed calcu-
lation)
Speed search
operating cur-
b3-02
rent (current
detection)
Speed search
deceleration
b3-03
time (current
detection)
Speed search
wait time
(current
b3-05
detection or
speed calcu-
lation)
Sets the mag-
netic flux
compensa-
b3-10 tion as a per-
centage of the
no-load cur-
rent.
-68
6
Name Description
Enables/disables the speed
search function for the Run
Command and sets the speed
search method.
0: Disabled, speed calculation
1: Enabled, speed calculation
2: Disabled, current detection
3: Enabled, current detection
Speed Calculation:
When the search is started, the
motor speed is calculated and
acceleration/deceleration is
performed from the calculated
speed to the specified
frequency (motor direction is
also searched).
Current Detection:
The speed search is started
from the frequency when
power was momentarily lost
and the maximum frequency,
and the speed is detected at the
search current level.
Sets the speed search operation
current as a percentage, taking
the Inverter rated current as
100%.
Not usually necessary to set.
When restarting is not possible
with the factory settings, reduce
the value.
Sets the output frequency decel-
eration time during speed search
in 1-second units.
Set the time for deceleration
from the maximum output fre-
quency to the minimum output
frequency.
Sets the magnetic contactor
operating delay time when there
is a magnetic contactor on the
output side of the Inverter.
When a speed search is per-
formed after recovering from a
momentary power loss, the
search operation is delayed by
the time set here.
Operation restarts at a speed
obtained by multiplying the
speed from the speed search by
the compensation gain (excita-
tion search only.)
Increase this setting if overvolt-
ages occur when a speed search
is performed after a long base-
block, for example, in searches
at startup.
Control Methods
Change
Setting Factory during
Range Setting Opera-
V/f
tion
*1
0 to 3 No A
2
120%
*1 *3
0 to
No A
200
150%
*1 *3
0.1 to
2.0 s No A
10.0
0.0 to
0.2 s No A
20.0
1.00 to
1.10 No A
1.20
MEMO
Open
BUS
V/f Flux
Loop
Regis-
with Vec-
Vec-
ter
PG tor
tor
A A No 191H
No A No 192H
No A No 193H
A A A 195H
No A No 19AH