Chapter 4 - Parameter Description [I/O]

This is the filtering time constant for ‘I’ signal input. If the ‘I’ signal is affected by noise causing unstable operation of the inverter, increase this value. Increasing this value makes response time slower.

This is the minimum current of the ‘I’ input at which inverter outputs minimum frequency.

This is the inverter output minimum frequency when there is minimum current (I/O-07) on the ‘I’ terminal.

This is the maximum current of the ‘I’ input at which inverter outputs maximum frequency.

This is the inverter output maximum frequency when there is the maximum current (I/O-09) on the ‘I’ terminal.

I/O-11: 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’, ‘I’ or ‘V1+I’. Following table shows the setting value.

Setting Range

Description

Select

Display

 

None

0

Does not check the analog input

signal.

 

 

 

 

The inverter determines that the

half of x1

1

frequency reference is lost when the

analog input signal is less than half of

 

 

 

 

the minimum value (I/O-02 or I/O-07).

 

 

The inverter determines that the

below x1

2

frequency reference is lost when the

analog input signal is less than the

 

 

 

 

minimum value (I/O-02 or I/O-07).

When the analog input signal is lost, inverter displays the following.

Related Functions: I/O-48 [Lost command] selects the operation after determining the loss of frequency reference.

Reference Frequency

I/O-10

 

I/O-08

 

I/O-07

I/O-09

Analog Voltage Input (V1)

The following table shows the selection in I/O-48.

Setting Range

Description

Select

Display

 

None

0

Continuous operating after loss of

frequency reference.

 

 

FreeRun

1

Inverter cuts off its output after

determining loss of frequency reference.

 

 

 

 

Inverter stops by its Decel pattern and

Stop

2

Decel time after determining loss of

 

 

frequency reference.

[Reference Frequency vs. Analog Current Input, I (4 to 20mA)]

Related Functions: DRV-04 [Frequency Mode] FU1-20 [Maximum Frequency]

I/O-49 [Time out] sets the waiting time before determining the loss of reference signal. Inverter

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Cleveland Range inverter manual Criteria for Analog Input Signal Loss, Following table shows the selection in I/O-48

inverter specifications

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