Frequency Setting Signal (Current) Bias/Gain Adjustment Method - Mitsubishi Electric FR-F700PJ Instruction Manual

Air-conditioning inverter
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Frequency setting by analog input (terminal 2, 4)

4.17.5 Frequency setting signal (current) bias/gain adjustment method

Follow the following procedure to adjust the bias and gain of the frequency setting voltage (current) using the operation
panel. Refer to page 188 for the details of parameters.
(a) Method to adjust any point by application of a voltage (current) across terminals 2 and 5 (4 and 5).
Operation
1.
Confirm the operation status indicator and
operation mode indicator
 The inverter should be at a stop.
 The inverter should be in the PU operation
mode.
(Using
)
2.
Press
to choose the parameter setting
mode.
3.
Turn
until
4.
Press
to display
5.
Turn
until
Set to C4 Terminal 2 frequency setting gain.
6.
Press
to display the analog voltage
(current) value (%).
7.
Apply a 5V (20mA) voltage (current).
(Turn the external potentiometer connected
across terminals 2 and 5 (across terminals 4
and 5) to maximum (any position).)
NOTE
After performing operation in step 6, do not touch
8.
Press
to set.
Turn
Press
Press
REMARKS
 If the frequency meter (display meter) connected across the terminals FM and SD does not indicate exactly 60Hz, set the
calibration parameter C0 FM terminal calibration. (Refer to page 158)
 If the gain and bias of frequency setting voltage (current) are too close, an error (
190
appears.
.
(
) appears.
to read another parameter.
to return to the
indication (step 4).
twice to show the next parameter (
Display
PRM indicator is lit.
(The parameter number read previously appears.)
C0 to C25 settings
are enabled.
Terminal 2 input is
Terminal 4 input is
selected
selected
Analog voltage (current)
value (%) across terminals 2
Hz
and 5 (across terminals 4
A
and 5)
Hz
A
* The value is nearly 100 (%) in the maximum position of
the potentiometer.
until completion of calibration.
Terminal 2 input is
selected
Hz
A
Flicker...Parameter setting complete!!
* The value is nearly 100 (%) in the maximum position of
the potentiometer.
).
Terminal 4 input is
selected
) may be displayed at setting.

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