3–14

“A” Group: Standard Functions

Analog Input Settings

The inverter has the capability to accept an external analog input that can command the output frequency to the motor. Voltage input (0 –10V) and current input (4–20mA) are available on separate terminals ([O] and [OI], respectively). Terminal [L] serves as signal ground for the two analog inputs. The analog input settings adjust the curve characteristics between the analog input and the frequency output.

Configuring

Drive Parameters

 

 

Adjusting [O–L] characteristics – In the graph to the right, A013 and A014 select the active portion of the input voltage range. Parameters A011 and A012 select the start and end frequency of the converted output frequency range, respectively. Together, these four parameters define the major line segment as shown. When the line does not begin at the origin (A011 and A013 > 0), then A015 defines whether the inverter outputs 0Hz or the A011-specified frequency when the analog input value is less than the A013 setting. When the input voltage is greater than the A014 ending value, the inverter outputs the ending frequency specified by A012.

Adjusting [OI–L] characteristics – In the graph to the right, A103 and A104 select the active portion of the input current range.

Parameters A101 and A102 select the start and end frequency of the converted output frequency range, respectively. Together, these four parameters define the major line segment as shown. When the line does not begin at the origin (A101 and A103 > 0), then A105 defines whether the inverter outputs 0Hz or the A101-specified frequency when the analog input value is less than the A103 setting. When the input voltage is greater than the A104 ending value, the inverter outputs the ending frequency specified by A102.

f

max frequency

A012

A015=00

A011

 

 

 

 

 

A015=01

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

%

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0%

 

 

 

 

 

 

 

100%

A013

 

 

A014

 

0V

Input scale

10V

 

 

 

 

 

 

 

f

max frequency

A102

A105=00

A101

 

 

 

A105=01

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

%

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0% A103 A104 100%

4mA20mA Input scale

NOTE: For L2002 series inverters, parameters A011 to A015 affect only the O–L input range. For the original L200 series inverters, the both the O–L analog input and the keypad potentiometer are affected.