Omron VARISPEED F7

5-12
5
Speed Search: b3
Param-
eter
Num-
ber
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO-
BUS
Register
Page
V/f
V/f
with
PG
Open
Loop
Vector
Closed
Loop
Vector
Display
b3-01
Speed
search
selection
(current
detection or
speed cal-
culation)
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 per-
formed 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 or the maxi-
mum frequency. The speed is
detected by observing the cur-
rent.
0 to 3
2
* 1
No A A A No 191H 6-56
SpdSrch at
Start
b3-02
Speed
search
operating
current
(current
detection)
Sets the speed search operation
current as a percentage, taking
the Inverter rated current as
100%.
Usually not necessary to set.
When restarting is not possible
with the factory settings, reduce
the value.
0 to
200
100%
* 2
No A No A No 192H 6-56
SpdSrch
Current
b3-03
Speed
search
decelera-
tion time
(current
detection)
Sets the output frequency decel-
eration time during speed search
in 1-second units.
Sets the time for deceleration
from the maximum output fre-
quency to the minimum output
frequency.
0.1 to
10.0
2.0 s No A No A No 193H 6-56
SpdSrch
Dec Time
b3-05
Speed
search wait
time (cur-
rent detec-
tion or
speed cal-
culation)
When a speed search is per-
formed after recovering from a
momentary power loss, the
search operation is delayed for
the time set here.
If e.g. a contactor is used at the
output side of the inverter set
this parameter to the contactor
delay time or more.
0.0 to
20.0
0.2 s No A A A A 195H 6-56
Search
Delay
b3-10
Speed
Search
Compensa-
tion Gain
(speed cal-
culation
only)
Sets the gain, which is applied to
the estimated speed before the
motor is restarted.
1.00 to
1.20
1.10 No A No No No 19AH 6-56
Srch Detect
Comp