Mitsubishi Electric FR-E700 Instruction Manual page 338

Frequency setting by analog input (terminal 2, 4)
Change the frequency at maximum analog input (Pr. 125, Pr. 126)
Set a value to Pr. 125 (Pr. 126) when changing only the frequency setting (gain) of the maximum
analog input power (current). (C2 (Pr. 902) to C7 (Pr. 905) setting need not be changed.)
Analog input bias/gain calibration [C2 (Pr. 902) to C7 (Pr. 905)]
The parameters for input bias and gain can be used to configure the inverter for set point signals that
do not exactly match 5 V or 10 V or 20 mA. You can enter the exact output frequencies to be associated
with the minimum and maximum signal values separately for terminals 2 and 4. This feature can also
be used to configure an inverse control characteristic (i.e. high output frequency at minimum set
point signal, minimum output frequency at maximum set point signal).
Set the bias frequency of the terminal 2 input using C2 (Pr. 902). (Factory-set to the frequency at 0 V.)
Parameter C3 (Pr. 902) is the frequency setting bias for the input signal at terminal 2, i.e. the minimum
value of the analog signal. When signals are smaller than this value the frequency set point signal will
be limited to the value set with C2.
Parameter 125 sets the gain for the terminal 2 output frequency. This is the frequency set point value
that corresponds to the maximum analog signal defined with Pr. 73. (Pr. 125 is set to a default value
of 50Hz at the factory.)
Parameter C4 (Pr. 903) sets the gain for the input signal on terminal 2, i.e. the maximum value of the
analog signal connected to terminal 2. When signals exceed this value the frequency set point value
is limited to the value stored in Pr. 125.
Parameter C5 (Pr. 904) sets the frequency set point bias frequency for terminal 4. This is the frequency
corresponding to the minimum analog signal. (This parameter is set to a default value of 0 Hz at the
factory.)
Parameter C6 (Pr. 904) sets the bias of the input signal on terminal 4, i.e. the minimum value of the
analog signal connected to terminal 4. When the signal on this terminal is lower than this value the fre-
quency set point value is limited to the value set with C5. (This parameter is set to a default value of
20% at the factory, which corresponds to approx. 4 mA.)
Parameter 126 sets the gain for the terminal 4 output frequency. This is the frequency set point value
that corresponds to the maximum analog signal defined with Pr. 73. (Pr. 126 is set to a default value
of 50 Hz at the factory.)
Parameter C7 (Pr. 905) sets the gain of the input signal on terminal 4, i.e. the maximum value of the
analog signal connected to terminal 4. When the signal on this terminal is higher than this value the
frequency set point value is limited to the value set with Pr. 126.
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Parameter