4-156
07-19
Speed Direction Search Operation Current
Range
【
0~100
】
%
07-20
Speed Search Operating Current
Range
【
0~100
】
%
07-21
Integral time of speed searching
Range
【
0.1~10.0
】
Sec
07-22
Delay time of speed searching
Range
【
0.0~20.0
】
Sec
07-23
Voltage recovery time
Range
【
0.1~5.0
】
Sec
07-24
Direction-Detection Speed Search Selection
Range
【
0
】
: Disable
【
1
】
: Enable
07-33
Start Frequency of Speed Search Selection
Range
【
0
】
: Maximum Output Frequency of Motor
【
1
】
: Frequency Command
Speed search function is used to find the speed of a coasting motor and continue operation from that point. The
speed search function is active after a momentary power loss.
Speed Search from Multi-function digital inputs
Set the multi-function digital input to external speed search command 1 or 2. External speed search command 1
(value = 19) and 2 (value = 34) cannot be set at the same time, otherwise "SE02" (digital input terminal error)
warning occurs.
Speed search function must be enabled before applying the run command to ensure proper operation. See relay
logic in figure 4.3.64.
Ry1
Ry2
Rv1
Speed search command
Run command
Figure 4.3.64 Speed search and operation commands
Notes: Speed Search Operation
- The speed search cannot be used when the motor rated power is greater than the inverter rated power.
- The speed search cannot be used when the motor rated power is two inverter sizes smaller than the inverter
currently used.
- The speed search cannot be used in combination with a high-speed motor.
- In V/F mode, it is necessary to perform a static auto-tune.
- In SLV mode, it is necessary to perform a rotational auto-tune. Perform a static auto-tune when using long
motor leads.