Speed Search - Omron SYSDRIVE RV Series User Manual

Name
Param-
eter
Number
Display
Sets the time required to
Voltage
return the Inverter output
recovery
voltage to normal voltage at
time
the completion of a speed
L2-04 search, in units of one sec-
ond.
PwrL V/F
Sets the time required to
Ramp t
recover from 0 V to the max-
imum voltage.
Sets the main circuit under-
Undervolt-
voltage (UV) detection level
age detec-
(main circuit DC voltage) in
tion level
V units.
Usually setting is not neces-
L2-05
sary.
Insert an AC reactor in the
PUV Det
Inverter input side to lower
Level
the main circuit undervolt-
age detection level.
* 1. The factory settings depend on the Inverter capacity. The values for a 200 V Class Inverter of 0.4 kW are given.
* 2. These are values for a 200 V Class Inverter. Values for a 400 V Class Inverter are double.
Setting Precautions
Error output signals are not output during momentary power loss recovery.
•
To continue Inverter operation after power has been restored, make settings so that Run Commands from
•
the control main circuit terminal are stored even while power is suspended.
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.

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 the fan that is rotating using inertia.
Setting
Description
Range
0.0 to
5.0
150 to
210
*2
Control Methods
Change
Factory during
V/f Open
Setting Opera-
V/f with Loop
tion
PG Vector
0.3 s
No A A
*1
190 V
No A A
*2
Continuing Operation
Regis-
Flux
ter
Vec-
tor
A A 488H
A A 489H
6-
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