Mitsubishi Electric FR-D720S SC EC, Instruction Manual

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Parameter Frequency setting by analog input (terminal 2, 4)
FR-D700 SC EC 6 - 157
Frequency setting signal (current) bias/gain adjustment method
1. Method to adjust any point by application of voltage (current) to across the terminals 2-5 (4-5).
The following example illustrating the procedure assumes that Pr. 241 is set to "0":
I002084E
Fig. 6-85: Bias and gain adjustment by application of an reference signal
NOTES
If the frequency meter (display meter) connected across the terminals AM-5 does not indi-
cate just 50Hz, set the calibration parameter C1. (Refer to section 6.10.4).
Error code Er3 may be displayed when you save if the frequency values for gain and bias are
less than approx. 5% apart. If this happens correct the frequency settings and save again.
Confirmation of the RUN indication and
operation mode indication.
The inverter must be at a stop.
The inverter must be in the PU operation
mode (using the PU/EXT key).
Press the MODE key to choose the
parameter setting mode.
Turn the digital dial until "C..." appears.
Press the SET key until "C---" appears.
Turn the digital dial until "C 4 (C 7)"
appears. Set to C4 "Terminal 2 frequency
setting gain".
Press the SET key to display the analog
voltage (current) value (%).
Apply the maximum set value. (Turn the
external potentiometer to its maximum)
CAUTION:
After performing the operation in
step
do not touch the digital dial
until completion of calibration.
Press the SET key to set.
Operation Display
C1 to C7 setting is
enabled.
Analog voltage (current) value (%)
across terminals 2-5 (across
terminals 4-5)
The value is nearly 100 (%) in
the maximum position of the
potentiometer.
Flicker ... Parameter setting complete!
(Adjustment completed)
By turning the digital dial, you can read another parameter.
Press the SET key to return to the "C---" indication (step ).
Press the SET key twice to show the next parameter (Pr.CL).
Voltage input Current input
The value is nearly 100 (%)
in the maximum position of
the potentiometer.
PRM indication is lit.
The parameter number read
previously appears.
Voltage
input
Current
input
Voltage input Current input