Mitsubishi Electric FR-E700 Instruction Manual page 324

Frequency setting by analog input (terminal 2, 4)
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":
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
until completion of calibration.
Press the SET key to set.
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).
Fig. 6-95: 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 "AM terminal calibration". (Refer to
section 6.11.4).
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.
6 - 184
Operation
do not touch the digital dial
Display
PRM indication is lit.
The parameter number read
previously appears.
C1 to C7 setting is
enabled.
Voltage input Current input
Analog voltage (current) value (%)
across terminals 2-5 (across
terminals 4-5)
The value is nearly 100 (%) in
the maximum position of the
potentiometer.
The value is nearly 100 (%)
in the maximum position of
Voltage
the potentiometer.
input
Flicker ... Parameter setting complete!
(Adjustment completed)
).
Parameter
Current
input
I001886E