Omron SYSDRIVE 3G3RV Series User Manual

C
ontinuing Operation
6
-
5
3
• If the momentary power loss operation selection is set to 0 (Disabled), when the momentary power loss
exceeds 15 ms during operation, alarm UV1 (main circuit undervoltage) will be detected.
K
KK
K Speed Search
The speed search function finds the actual speed of the motor that is rotating using inertia, and then starts
smoothly from that speed. When restoring power after a temporary power loss, the speed search function
switches connection from the commercial power supply, and then restarts, for example, a fan that is rotating
due to the mechanical inertia.
nRelated Parameters
*1.The factory setting will change when the control method is changed. (V/f control factory settings are given.)
* 2. Factory settings depend on Inverter capacity. (The values shown are for a 200 V Class Inverter for 0.4 kW.)
Param-
eter
Num-
ber
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
V/f
V/f
with
PG
Open
Loop
Vec-
tor
LCD Dis-
play
b3-01
Speed search
selection (cur-
rent detection
or speed cal-
culation)
Enables/disables the speed search function for the run com-
mand 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.
0 to 3
2
*1
No A A A
Slip Comp
Gain
b3-02
Speed search
operating cur-
rent (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 No A
Spd Srch Cur-
rent
b3-03
Speed search
deceleration
time (current
detection)
Sets the output frequency deceleration time during speed
search in 1-second units.
Set the time for deceleration from the maximum output fre-
quency to the minimum output frequency.
0.1 to
10.0
2.0 sNoANoA
SpdSrch Dec
time
b3-05
Speed search
wait time
(current
detection or
speed calcula-
tion)
Sets the contactor operating delay time when there is a contac-
tor on the output side of the Inverter. When a speed search is
performed after recovering from a momentary power loss, the
search operation is delayed by the time set here.
0.0 to
20.0
0.2 sNoAAA
Search Delay
L2-03
Min. base-
block time
Sets the Inverter’s minimum baseblock time in units of one sec-
ond, when the inverter is restarted after power loss ridethrough.
Sets the time to approximately 0.7 times the motor secondary
circuit time constant.
If an overcurrent or undercurrent occurs when starting a speed
search or DC injection braking, increase the set values.
0.1 to 5.0
0.1 s
*2
No A A A
PwrL Base-
block t
L2-04
Vo l tag e
recovery time
Sets the time required to return the Inverter output voltage to
normal voltage at the completion of a speed search, in units of
one second.
Sets the time required to recover from 0 V to the maximum
voltage.
0.0 to
5.0
0.3 s
*2
No A A A
PwrL V/F
Ramp t

Omron SYSDRIVE 3G3RV Series Specifications

General

Brand	Omron
Model	SYSDRIVE 3G3RV Series
Category	Inverter
Language	English