Hitachi J300U Series Instruction Manual page 60

Extension
function
code
Set the frequency for starting output for an external frequency command (0 to 10 V, 0 to 5 V,
4 to 20 mA) and the frequency for ending output. When 0 Hz is set, this function will be canceled.
External frequency
setting start
Setting method
External
frequency
setting
start
External frequency
setting end
External
Frequency
setting end
Set the inverter retry method when a power error occurs.
Select the set value of the retry method to be used.
Setting method
Instanta-
neous
restart
selection
Restart
selection
NOTE 1:
NOTE 2:
Initial value
.
2
1
FUNC
(400)
FUNC
Output
frequency
(Hz)
Same as A26
Start setting
command (20%)
2
1
FUNC
Initial value
When the base frequency is one of the following ones, frequency matching may restart at 0 Hz.
When the base frequency is 60 Hz: Driven at 40 Hz or less
When the base frequency is 50 Hz: Driven at 30 Hz or less
For other precautions, refer to Chapter 1, "Instantaneous stop restart" of Appendix 2.
Since the retry mode is selected, the equipment restarts for trips of overcurrent, overvoltage, or undervoltage.
For undervoltage, 16 retries (17th trip) are executed.
For overcurrent or overvoltage, 3 retries (fourth trip) are executed.
Do not use this function for a case that a fallen substance should be held by the machine brake when the motor
is in the free-run mode.


Contents and display
 

60
50


30
0 10 V
Frequency
 
0 5 V
command
4 20 mA
60
10 V
0 2 8 V
5V
0 1 4 V
20mA
4 7.2 16.8
End setting
command (80%)
Set value
0
Initial value
1
FUNC
2
3
7-20
NOTE 1: The standard setting is 0 Hz.
In this case, the selected V/f
pattern is used for running.
NOTE 2: When changing the V/f pattern
after A 26 (start) and A 27 (end)
are set, readjust A 26 (start) and
A 27 (end).
NOTE 3: When A 26 (start) > A 27 (end)
is set and the frequency command
value is minimized (0 V or 4 mA),
the output frequency may be
lowered than the value which is
set by A 26 by 0.1 to 0.3 Hz.
The reason is that it is judged that
there is some frequency due to
noise on the signal line and it is a
normal operation.
NOTE 4: The setting shown left is also
possible with F31 of the remote
operator.
Frequency
command
Function
Alarm output after tripped
Deceleration stop at the time
of restart
Frequency matching start at the time
of restart ( Note 1)
0 Hz start at the time of restart