5
-10
Speed Search: b3
Param-
eter-
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
level
RS-
422A/
485 Reg-
ister
Page
LCD Display
b3-01
Speed
search
selection
(current
detection or
speed calcu-
lation)
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 sear-
ched).
Current Detection:
The speed search is started from
the frequency when power was
momentarily lost and the maxi-
mum frequency and the speed is
detected at the search current
level.
0 to 3
2
No
A
191H
6-38
SPDSrch at
Start
b3-02
Speed
search oper-
ating current
(current
detection)
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.
0 to
200
120%
No
A
192H
6-38
SPDSrch
Current
b3-03
Speed
search
deceleration
time (cur-
rent detec-
tion)
Sets the output frequency decel-
eration time during speed search
in 1-second units.
Set the time for deceleration from
the maximum output frequency to
the minimum output frequency.
0.1 to
10.0
2.0 s
No
A
193H
6-38
SPDScrh
Dec Time
b3-05
Speed
search wait
time (cur-
rent detec-
tion or speed
calculation)
Sets the contactor operating delay
time when there is a 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.
0.0 to
20.0
0.2 s
No
A
195H
6-38
Search
Delay