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Monitoring Reference (pr. 55, Pr. 56) - Mitsubishi Electric FR-A520-0.4K -55K Instruction Manual

Transistorized inverter, high function & low acoustic noise.
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Monitoring reference (Pr. 55, Pr. 56)

Pr. 55 "frequency monitoring reference"
Pr. 56 "current monitoring reference"
Set the frequency or current which is referenced for display when the frequency or current is selected for the
FM and AM terminals and PU level meter display.
Parameter
Factory Setting
Number
60Hz 〈50Hz〉
55
Rated output
56
current
<Setting>
Referring to the above figures and following table, set Pr. 55 and Pr. 56:
Monitoring Reference
Monitored Data Selection
Setting Parameter
Output frequency (Hz))
Frequency monitoring
Frequency setting (Hz)
reference Pr. 55
Running speed (Pr. 37)
Output current (A)
Output current peak value
Current monitoring
(A)
reference Pr. 56
Load meter (%)
Motor exciting current (A)
Setting using Pr. 55, Pr. 56
Note: 1. The maximum pulse train output of terminal FM is 2400 pulses/second. If Pr. 55 is not adjusted,
the output of terminal FM will be filled to capacity. Therefore, adjust Pr. 55.
2. The maximum output voltage of terminal AM is 10VDC.
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Setting Range
0 to 400Hz
0 to 500A
1440 pulses/second. (terminal FM)
1440 pulses/second. (terminal FM)
10VDC (terminal AM)
10VDC (terminal AM)
Full scale (PU level monitor)
Full scale (PU level monitor)
Output frequency
Pr.55
Output current
Frequency setting
Output current peak value
Running speed
Load meter
PU Level Display
Selection
Pr. 53 Setting
1
5
6
2
11
17
18
Set to make the PU
level meter indication
to be in full-scale.
84
PARAMETERS
Related parameters
Pr. 37 "speed display"
Pr. 53 "PU level display data selection"
Pr. 54 "FM terminal function selection"
Pr. 158 "AM terminal function selection"
Pr. 900 "FM terminal calibration"
Pr. 901 "AM terminal calibration"
Pr.56
FM Terminal Function
AM Terminal Function
Selection
Selection
Pr. 54 Setting
Pr. 158 Setting
1
1
5
5
6
6
2
2
11
11
17
17
18
18
Set to make the
Set to make the
terminal FM pulse train
terminal AM output
output to be 1440
voltage to be 10V.
pulses/second.

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