Omron RX Series User Manual page 425

Parameter
No.
b088 Free-run Stop Selection
b003 Restart Standby Time
Frequency Matching Lower
b007
Limit Frequency
Frequency Pull-in Restart
b028
Level
Frequency Pull-in Restart
b029
Parameter
Starting Frequency Selection
b030
at Frequency Pull-in Restart
(Example 1) 0-Hz restart (b088 = 00)
FW
FRS
Free
running
Motor rpm
0
• The inverter restarts at 0 Hz independent of the
motor rotation speed.
The Restart Standby Time setting will be ignored
during 0-Hz restart.
• If the inverter starts at 0 Hz at a high motor rotation
speed, an overcurrent trip may occur.
High-function General-purpose Inverter 3G3RX-V1 User's Manual (I578-E1)
Function name
00: 0-Hz restart
01: Frequency matching restart
02: Frequency pull-in restart
0.3 to 100.0
0.00 to 99.99
100.0 to 400.0
Heavy
load (CT)
Light load
(VT)
0.10 to 30.00
00: Frequency at shutoff
0 Hz start
7 Detailed Functions
Data
0.20 x Rated current to
2.00 x Rated current
(0.4 to 55 kW)
0.20 x Rated current to
1.80 x Rated current
(75 to 132 kW)
0.20 x Rated current to
1.50 x Rated current
(Example 2) Frequency matching restart (b088 = 01)
FW
FRS
Motor rpm
0
b003
• When the restart standby time elapses after the
FRS terminal is turned OFF, the inverter pulls in the
motor frequency to execute the frequency matching
restart function without stopping the motor rotation.
If an overcurrent trip occurs during a frequency
matching restart, increase the restart standby time.
• Even when the Free-run Stop Selection is set to 01
(Frequency matching start), the inverter may restart
at 0 Hz in the following cases.
• The output frequency is equal to or lower than 1/2
of the base frequency.
• The motor induction voltage decreases quickly.
• The inverter recognizes that the detected
frequency is equal to or less than the value set in
the Frequency Matching Lower Limit Frequency
(b007).
Default data Unit
00 –
1.0 Hz
0.00 s
Rated current
value
A
Rated current
value
0.50 s
00 –
Free running
Frequency
matching start
7 - 99
7