Mitsubishi Electric FR-A700 Series Installation Manuallines page 31

7.5 Reference of the terminal CA (analog current output) and
AM (analog voltage output) (Pr. 55, Pr. 56, Pr. 866, Pr. 867,
Pr. 869)
Two types of monitor output, analog current output from the terminal CA and analog voltage output from the
terminal AM, are available.
Set the reference of the signal output from terminal CA and AM.
Parameter
Name
Number
Frequency monitoring
55
*
reference
Current monitoring
56
*
reference
Torque monitoring
866
*
reference
867 AM output filter
869 Current output filter
* The above parameters allow its setting to be changed during operation in any operation mode even if "0" (initial value) is set in
Pr. 77 Parameter write selection.
(1) Frequency monitoring reference (Pr. 55)
(10VDC) (20mADC)
1Hz 60Hz
(initial value)
Setting range of Pr. 55
(2) Current monitoring reference (Pr. 56)
(10VDC) (20mADC)
Rated current
(initial value)
Setting range of Pr. 56
Initial Setting
Value Range
60Hz 0 to 400Hz
Rated
inverter 0 to 3600A
current
150% 0 to 400%
0.01s 0 to 5s
0.02s 0 to 5s
• Set the full scale value when outputting the frequency monitor from
terminal CA or AM.
• For the calibration of terminal CA, set the full-scale value of the
connected meter when output current of terminal CA is 20mADC.
Set the frequency to be indicated as the full scale value on the meter
(20mADC ammeter) connected between terminal CA and 5. (For
example, 60Hz or 120Hz)
Output current is proportional to the frequency. (Maximum output
400Hz
current is 20mADC.)
• For the calibration of terminal AM, set the full-scale value of the
connected meter when output voltage of terminal AM is 10VDC.
Set the frequency to be indicated as the full scale value on the meter
(10VDC voltmeter) connected between terminal AM and 5.
(For example, 60Hz or 120Hz)
Output voltage is proportional to the frequency. (Maximum output
voltage is 10VDC.)
• Set the full scale value when outputting the current monitor from
terminal CA or AM.
• For the calibration of terminal CA, set the full-scale value of the
connected current meter when the output current of terminal CA is
20mADC.
Set the current to be indicated as the full scale value on the meter
(20mADC ammeter) connected between terminal CA and 5.
Output current is proportional to the monitored value of output
current. (Maximum output current is 20mADC.)
3600A
• For the calibration of terminal AM, set the full-scale value of the
connected current meter when the output voltage of terminal AM is
10VDC.
Set the current to be indicated as the full scale value on the meter
(10VDC voltmeter) connected between terminal AM and 5.
Output voltage is proportional to the monitored value of output
current. (Maximum output voltage is 10VDC.)
FR-A770 DEDICATED SPECIFICATIONS
Description
Set the full-scale value to output the output frequency
monitor value to terminal CA and AM.
Set the full-scale value to output the output current monitor
value to terminal CA and AM.
Set the full-scale value to output the torque monitor value
to terminal CA and AM.
Set the output filter of terminal AM.
Adjust response level of current output.
28