Hitachi SJ300-037HFE 사용자 설명서

SJ300 Inverter

Oper

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ons

and Monitor

ing

The inverter can store up to 16 different fixed target frequencies (speeds) in parameters A020 
to A035. Binary inputs select the speed through four of the intelligent terminals configured as 
binary-encoded inputs CF1 to CF4 per the table. These can be any of the eight inputs, and in 
any order. You can use fewer inputs if you need eight or fewer speeds.

NOTE: When choosing a subset of speeds to use, always start at the top of the table, and with 
the least-significant bit: CF1, CF2, etc.

The example with eight speeds in the figure below shows how input switches configured for 
CF1 – CF3 functions can change the motor speed in real time. 

Multi-speed Override Feature - The multi-speed function can selectively override the 
external analog speed reference input. When the Frequency Source Setting parameter 
A001=01, the control terminal inputs determine the output frequency. At the same time, the 
inverter can use multi-speed select for output frequency if one or more intelligent inputs are 
configured as a CF type (CF1 to CF4). When all CF input(s) are OFF, the control terminal input 
determines the output frequency normally. When one or more CF input(s) are ON, then the 
corresponding multi-speed setting (see the table above) overrides and becomes the output 
frequency.  

Speed  0

0

0

0

0

Speed  8

1

0

0

0

Speed  1

0

0

0

1

Speed  9

1

0

0

1

Speed 2

0

0

1

0

Speed 10

1

0

1

0

Speed 3

0

0

1

1

Speed 11

1

0

1

1

Speed 4

0

1

0

0

Speed 12

1

1

0

0

Speed 5

0

1

0

1

Speed 13

1

1

0

1

Speed 6

0

1

1

0

Speed 14

1

1

1

0

Speed 7

0

1

1

1

Speed 15

1

1

1

1

0th

CF1

CF2

CF3

1st

2nd

6th

5th

4th

3rd

7th

Speed

Switches

Fwd Run

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