Chapter 6 - Parameter Description [I/O]
6-40
EX) To give 60Hz (1800 rpm) command from
1000 Pulse encoder
I/O-15 [Max Freq of P Pulse Input]=Rated rpm/60
sec * Number of Encoder Pulse
= 1800 [rpm]/60[sec]*1000=3000Hz,
Therefore, set I/O-15 to 3.0KHz
I/O-17, 18, 19: Criteria for Analog Input Signal Loss
This is to set the criteria for analog input signal loss
when DRV-04 [Frequency Mode] is set to ‘V1’,
‘V1S’ ‘I’, ‘V1+I’ or ‘Pulse’. However, for “V1+I”,
main speed is V1 so inverter does not respond when I
signal is missing. Following table shows the setting
value.
Setting Range Description
None Disabled.
half of x1
The inverter determines that the
frequency reference is lost when the
analog input signal is less than half of
the minimum set value (I/O-02, I/O-
07, I/O-13).
below x1
The inverter determines that the
frequency reference is lost when the
analog input signal is less than the
minimum set value (I/O-02 or I/O-07,
I/O-13).
I/O-18 [Operating method after loss of analog freq.
command] selects the operation after determining the
loss of frequency reference.
The following table shows the selection in I/O-18.
Setting Range Description
None
Continuous operating after loss of
frequency reference.
FreeRun
Inverter cuts off its output after
determining loss of frequency
reference.
Stop
Inverter stops by its Decel pattern and
Decel time after determining loss of
frequency reference.
When the analog input signal is lost, inverter displays
the following table.
Setting Range Description
LOV Loss of analog input signal, V1
LOI Loss of analog input signal, I
LOA Loss of pulse reference frequency
I/O-19 [Time out] sets the waiting time before
determining the loss of reference signal. Inverter
waits to determine the loss of a reference signal until
time-out.
Reference frequency can be viewed as Rpm when
DRV-16 [Hz/Rpm Display] is set to “rpm”.
I/O►
Wire broken
17 None
0 17
Factory Default: None 0
I/O-13 I/O-15
I/O-16
I/O-14
Pulse input
(0~10kHz)
Set freq. (target value)
Pulse Min.
Freq
Pulse Max.
Freq.
I/O
►
Lost command
18 None
0 18
Factory Default: None 0
I/O
►
Time out
19 1.0 sec
1.0 19
Factory Default: 1.0 sec 1.0