Chapter 4 - Parameter Description [I/O]

This code sets the communication speed. This is used in communication between inverter and communication board.

I/O-48: Operating at Loss of Freq. Reference

I/O-49: Waiting Time after Loss of Freq. Reference

There are two kinds of loss of frequency reference. One is the loss of digital frequency reference and the other is of analog frequency reference.

Loss of digital frequency reference is applied when DRV-04 [Frequency Mode] is set to ‘Keypad-1’ or ‘Kepad-2’. At this time, the ‘Loss’ means the communication error between inverter and keypad or communication board during the time set in I/O-49.

Loss of analog frequency reference is applied when DRV-04 [Frequency Mode] is set to other than ‘Keypad-1’ or ‘Kepad-2’. At this time, the ‘Loss’ is determined by the criteria set in I/O-11 [Criteria for Analog Input Signal Loss].

Setting Range

Description

Select

Display

 

None

0

Inverter keeps on operating at the

previous frequency.

 

 

FreeRun

1

Inverter cuts off its output.

(Coast to stop)

 

 

Stop

2

Inverter stops with Decel time (DRV-

02) and Decel pattern (FU1-26).

 

 

This is the time inverter determines whether there is a frequency reference or not. If there is no frequency reference satisfying I/O-11 during this time, inverter determines that it has lost of frequency reference.

Related Functions: DRV-04 [Frequency Mode]

I/O-11 [Criteria for Analog Signal Loss]

I/O-50: Communication Protocol Selection

This code selects the RS485 protocol between inverter and computer.

Setting Range

 

Description

Select

Display

 

CMC-Bus

 

0

8 bit Data, No Parity, 1 Stop

ASCII

 

 

 

 

 

Modbus RTU

 

7

8 bit Data, No Parity, 2 Stop

I/O-99: Return Code (7-Segment Keypad)

This code is used to exit a group. Press [FUNC] key to exit.

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Cleveland Range inverter manual Communication Protocol Selection, Return Code 7-Segment Keypad

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