MITSUBISHI ELECTRIC FR-S520 - Manual (Page 93)

84
2
.6.3 Monitoring reference
Set the frequency or
current which is
referenced when the
output frequency or
output current is selected
for the FM (AM) terminal.
•
The Japanese
version has the FM
terminal feature, and
the NA and EC
versions have the AM
terminal feature.
1440 pulses/s (terminal FM)
Output
frequency
Pr.55
1440 pulses/s (terminal FM)
Output
frequency
Pr.56
Ou
tp
ut
o
r
di
s
p
la
y
Ou
tp
ut
o
r
di
s
p
la
y
(5VDC (terminal AM)) (5VDC (terminal AM))
Parameter Name
Factory
Setting
Setting
Range
Remarks
55
Frequency monitoring
reference 60Hz
<50Hz>
0 to 120Hz
56
Current monitoring
reference Rated output
current
0 to 50A
Setting is enabled
when Pr. 30 = "1"
Refer to the above diagrams and set the frequency monitoring reference value in
Pr. 55 and the current monitoring reference value in Pr. 56.
Pr. 55 is set when Pr. 54 "FM (AM) terminal function selection" = "0" and Pr. 56 is set
when Pr. 54 = "1".
Set the Pr. 55 and Pr. 56 values so that the output pulse train output of terminal FM is
1440 pulses/s (the output voltage of terminal AM is 5V).
CAUTION
•
The maximum pulse train output of terminal FM is 2400pulses/s. If Pr. 55 is not
adjusted, the output of terminal FM will be filled to capacity. Therefore, adjust Pr. 55.
•
The maximum output voltage of terminal AM is 5VDC.
2
.7 Restart Operation Parameters
2
.7.1 Restart setting
At power restoration after an instantaneous power failure, you can restart the
inverter without stopping the motor (with the motor coasting).
Parameter Name
Factory
Setting
Setting
Range
Remarks
57
Restart
coasting time
- - -
0 to 5s,
- - -
58
Restart cushion
time
1s 0 to 60s
Setting is enabled when Pr. 30 = "1"