Speed Search - Omron VARISPEED E7 User Manual

Speed Search

The speed search function finds the actual speed of a motor that is coasting and then starts smoothly from that
speed. It is also activated after momentary power loss detection when L2-01 is set to 1 or 2.
Related Parameters
Parameter
Number
Speed search selection (current detection or speed
b3-01
calculation)
b3-02 Speed search operating current (current detection)
b3-03 Speed search deceleration time (current detection)
Speed search wait time (current detection or speed
b3-05
calculation)
b3-14 Bi-directional speed search selection
L2-03 Min. baseblock time
L2-04 Voltage recovery time
*1. The factory setting depends on the Inverter capacity. The value for a 200 V class Inverter of 0.4kW is given.
Multi-function Digital Inputs
Set Value
External speed search command 1
OFF: Speed search disabled (Acceleration starts from FMIN)
61
ON: Speed calculation (Calculates the motor speed and starts search from the calculated speed)
Current detection (Starts speed search from maximum output frequency)
External speed search command 2
OFF: Speed search disabled (Acceleration starts from FMIN)
ON: Speed calculation (Calculates the motor speed and starts search from the calculated speed)
62
(Same operation as external speed search command 1)
Current detection: Starts speed search from set frequency
(reference frequency when speed search command was input).
External speed search command 3
64 OFF: Inverter is base blocked
ON: Inverter starts operation using speed search (same operation as speed search 2)
Name
Function
Change
Setting Factory
during
Range Setting
Operation
0 to 3 2 No
0 to
120% No
200
0.1 to
2.0 sec. No
10.0
0.0 to
0.2 sec. No
20.0
0 or 1 1 No
0.1 to 5.0 0.1 sec. No
0.0 to
*1
No
0.3 sec.
5.0
Automatic Restart
Access
Level
A
A
A
A
A
A
A
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