Mitsubishi Electric FR-A800, Instruction Manual

Page: 524 / 1042

(M) Monitor display and monitor output signal Parameters
5 - 344
Frequency monitor reference (Pr. 55)
●
Set the full-scale value for outputting the monitored items of output frequency, frequency setting
value, and Dancer main speed setting to the terminals FM, CA and AM.
●
For the FM-type inverters, set the full-scale value of the connected meter when the pulse speed
of terminal FM is 1440 pulses/s (50k pulses/s). Set the frequency to be indicated as the full scale
value on the frequency meter (1 mA analog meter) connected between terminal FM and SD. (For
example, 60 Hz or 120 Hz.) Pulse speed is proportional to the output frequency of the inverter.
(Maximum pulse train output is 2400 pulses/s (55k pulses/s).)
●
For the CA-type inverters, set the full-scale value of the connected meter when output current of
terminal CA is 20 mA. Set the frequency to be indicated as the full scale value on the meter (20 mA
DC ammeter connected between terminal CA and 5; for example, 60 Hz or 120 Hz. Output current
is proportional to the frequency. (The maximum output current is 20 mA DC.)
●
For the calibration of terminal AM, set the full-scale value of the connected meter when output
voltage of terminal FM is 10 V DC. Set the frequency to be indicated as the full scale value on the
meter (10 V DC voltmeter) connected between terminal AM and 5. (For example, 60 Hz or 120 Hz)
Output voltage is proportional to the frequency. (The maximum output voltage is 10 V DC.)
FM type: 60 Hz; CA type: 50 Hz
Output with a negative sign available when Pr. 290 "Monitor negative output selection" = "1, 3"
Fig. 5-151:
Frequency monitoring reference for terminal FM
I002608E
Fig. 5-152:
Frequency monitoring reference for terminal CA
I002609E
Fig. 5-153:
Frequency monitoring reference for terminal AM
I002610E
Output frequency
Setting range of Pr. 55
60 Hz
(initial value)
P
ulse sp
eed (pulses/s)
1 Hz
400 Hz
2400
(55k)
1440
(50k)
Output Current
DC 20 mA
50 Hz
(initial value)
120 Hz
Setting range of Pr. 55
∗2
∗1
Setting range of Pr. 55
60 Hz
(initial value)
120 Hz
10 V DC
Output voltage
60 Hz
10 V DC