Specifications

40
Operate Coasting Motor without Trip
Speed Search Reference “61”，“62”，“64”
Multi-function input H1-01 to 10
Zero speed level (DC injection braking start frequency)
b2-01
DC injection braking current b2-02
DC injection braking time at start b2-03
Speed search reference or DC injection braking (at start)
can be used to continue operation without tripping the
motor during coasting.
（1）Speed search reference
This function is used to restart the motor during coasting without
stopping the motor. This allows smooth switching of the motor
from commercial power operation to inverter operation. Set
(search reference from max. output frequency) or (search
command from preset frequency) in the multi-function input
terminal (H1-01 to H1-10).
Arrange the sequence so that the forward (reverse) run command
is input at the same time or after the search reference.
If the run command enters before the search reference, the search
reference is disabled.
（2）DC injection braking at start
This function is used to restart the motor after applying
DC injection braking current to the coasting motor.
The time for direct current injection braking at start
can be set unit of 0.1 sec in b2-03.
The DC injection braking is set in b2-02. When setting
of b2-03 is 0, direct current injection braking is not
performed, and acceleration is performed from the
minimum frequency.
Forward (Reverse)
Run Command
Speed Search
Reference
Frequency Reference
When Max. Output
Frequency or Operation
Command is Input
Output Frequency
Min. Baseblock Time Speed Search
Operation
Synchronous Speed Detection
0.5 s or more
ON
ON
Time Chart at Search Reference Input
Minimum
Frequency
DC Injection Braking Time at Start
b2-01
b2-03
Automatic Restart after Momentary Power Loss
Momentary power loss detection L2-01
Momentary power loss ridethru time L2-02
Momentary power loss detection
If momentary power loss occurs, the operation can be
restarted automatically.
L2-01 Setting
0
Operation not continued (Factory setting)
Operation continued after power recovery (no fault signal).
(However, restarts only within the time established by the control power.)
Operation continued after power recovery within
momentary power loss ridethru time (L2-02).
1
2
Description
＊1
＊2
＊1 Hold the run command to continue the operation after recovery from
momentary power loss.
＊2 When 2 is selected, the operation restarts if power supply voltage reaches
its normal level. No fault signal is indicated.
Momentary power loss ridethru time
Set the ridethru time to L2-02 when L2-01 is set to 1. The
initial values depend on the inverter capacities as follows.
Inverter Model
CIMR-G7A _
L2-02 Initial Value
20P4 to 27P5
2011 to 2110
40P4 to 47P5
4011 to 4300
0.1 to 1.0 s
2.0 s
0.1 to 1.0 s
2.0 s
Continue Operation at Constant Speed
when Frequency Reference Missing
Operation when frequency reference is missing
L4-05
Detection of missing frequency reference continues
operation at 80 ％ speed of the frequency reference before
the frequency reference missed if the frequency reference
by analog input is reduced by 90 ％ or more in 400 ms.
Setting Value Description
0
1
Stop (Operation following with the frequency reference.)
Operation continued at 80 ％ speed of frequency
reference before it missed