Continuing Operation
6-39
* 1. The factory setting will change when the control method is changed. The open-loop vector control factory settings are given.
* 2. The factory setting depends on the Inverter capacity.
Multi-function Contact Inputs (H1-03 to H1-16)
Setting Precautions
• When both external search commands 1 and 2 are set for the multi-function contact terminals, an OPE03
(invalid multi-function input selection) operation error may occur. Set either external search command 1 or
external search command 2.
• If performing speed search using external search commands, add an external sequence so that the period
when the Run Command and external search command are both on is at the very least the Minimum Base-
block Time (L2-03).
• If the Inverter output is equipped with a contact, set the contact operation delay time in the Speed Search
Wait Time (b3-05). The factory setting is 0.2 s. When not using the contact, you can reduce the search time
by making the setting 0.0 s. After waiting for the speed search wait time, the Inverter starts the speed
search.
• Constant b3-02 is a current detection speed search (current detection level for search completion). When
the current falls below the detection level, the speed search is viewed as completed, and the motor acceler-
ates or decelerates to the set frequency. If the motor cannot restart, lower the set value.
• If an overcurrent (IOC) is detected when using speed search after recovery following a power loss,
lengthen the Minimum Baseblock Time (L2-03).
Application Precautions for Speed Searches Using Estimated Speed
• When using vector control, always perform rotational or stationary autotuning (not stationary autotuning
for line-to-line resistance only) before using speed searches based on estimated speeds.
• If the cable length between the motor and Inverter is changed after autotuning has been performed, per-
form stationary autotuning for line-to-line resistance only again.
L2-04
Voltage recovery time Sets the time required to return
the Inverter output voltage to
normal voltage at the comple-
tion of a speed search, in units
of one second.
Sets the time required to
recover from 0 V to the maxi-
mum voltage.
0.0 to
10.0
1.5 s
*2
No A A 4F3H
PwrL V/F Ramp t
Setting
Value
Function
Control Methods
Open-
loop
Vector
Flux
Vector
61 External search command 1 (on: Speed search from maximum output frequency) Yes No
62 External search command 2 (on: Speed search from set frequency) Yes No
Constant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control
Methods
MEMOBUS
Register
Open-
loop
Vector
Flux
Vector
Display
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