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Monitor display and monitor output signal
4
PARAMETERS
4.12.3 FM, AM terminal function selection (Pr.55, Pr.56, Pr.867)
(1) Frequency monitoring reference (Pr.55)
• Set the full scale value when outputting the frequency monitor from terminal FM or AM.
• For the calibration of terminal FM, set the full-scale value of the connected meter when the pulse speed of terminal
FM is 1440 pulse/s.
Set the frequency to be indicated as the full scale value on the frequency meter (1mA analog meter) connected
between terminal FM and SD. (For example, 60Hz or 120Hz.)
Pulse speed is proportional to the output frequency of the inverter. (Maximum pulse train output is 2400 pulse/s.
• 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.)
For signal output, two different output terminals are available: pulse train output terminal FM and analog
output terminal AM.
You can select the signals output to the terminals FM, AM.
Parameter
Number
Name Initial Value Setting Range Description
55 *1
Frequency monitoring
reference
60Hz
*2 0 to 400Hz
Full-scale value when frequency
monitor value is output to terminal FM
and AM.
56
*1
Current monitoring
reference
Rated inverter
current
*2
55K or
lower
0 to 500A
Full-scale value when current monitor
value is output to terminal FM and AM.
75K or
more
0 to
3600A
867 AM output filter 0.01s 0 to 5s Set the output filter of terminal AM.
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 201)
*1 This parameter allows its setting to be changed during operation in any operation mode even if "0" (initial value) is set in Pr. 77 Parameter
write selection.
*2 Performing IPM parameter initialization changes the settings. (Refer to page 80)
2400
1440
1Hz Output frequency 400Hz
Setting range of Pr. 55
Pulse speed (pulses/s)
60Hz
(initial value)
Setting range of Pr. 55
1Hz 400Hz60Hz
(initial value)
Output voltage
10VDC