Omron VARISPEED F7 User Manual

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 Speed Search
The speed search function detect the actual speed of a motor that is coasting without control and restart it
smoothly from that speed. It is also activated after momentary power loss detection when L2-01 is set to
enabled.
Related Parameters
Multi-function Digital Inputs
Parameter
No.
Name
Factory
Setting
Change
during
Opera-
tion
Control Methods
V/f
V/f with
PG
Open
Loop
Vector
Closed
Loop
Vector
b3-01 Speed search selection (current detection or speed calculation)
2
* 1
* 1. The factory setting will cahnge when the control mode is changed (V/f control factory settings are given).
No A A A No
b3-02 Speed search operating current (current detection) 120% *1 No A No A No
b3-03 Speed search deceleration time (current detection) 2.0 sec No A No A No
b3-05 Speed search wait time (current detection or speed calculation) 0.2 sec No A A A A
b3-14 Speed search rotation selection direction 1 No A A A No
b3-17 Speed search retrial detection level
150%
* 2
* 2. The given factory setting is valid if Heavy Duty is selected (C6-01=0, default setting). If Normal Duty 1 or 2 is selected (C6-01=1 or 2) the factory setting
will be 120%.
No A No A No
b3-18 Speed search retrial detection time 0.01 sec No A No A No
b3-19 Number of speed search retrials 0 No A No A No
L2-03 Min. baseblock time
0.1 sec
* 3
* 3. The factory setting depeds on the Inverter capacity. The value for a 200 V class Inverter of 0.4 kW is given.
NoAAAA
L2-04 Voltage recovery time
0.3 sec
*3
NoAAAA
Set
Value
Function
Control Methods
V/f
V/f with
PG
Open
Loop
Vector
Closed
Loop
Vector
61
External search command 1
OFF: Speed search disabled (Start from lowest output frequency)
ON:
Yes N o Yes N o
Speed calculation:
Calculates the motor speed, and starts search
from calculated speed
Current detection:
Starts speed search from maximum output fre-
quency
62
External search command 2
OFF: Speed search disabled (Start from lowest output frequency)
ON:
Yes N o Yes N o
Speed calculation:
Calculates the motor speed, and starts search
from calculated speed, same operation as exter-
nal search command 1
Current detection:
Starts speed search from set frequency (refer-
ence frequency when search command was
input).
64
External search command 3
OFF: Inverter is base blocked
ON: Inverter starts operation using speed search (same operation as speed search 2)
Yes Ye s Ye s Yes

Omron VARISPEED F7 Specifications

General

Brand	Omron
Model	VARISPEED F7
Category	Inverter
Language	English