24
Control circuit specifications
(2) Output signal
(3) Communication
Type
Terminal
Symbol
Terminal Name
Description
Rated Specifications
Reference
Page
Rel
a
y
A, B, C
Relay output (fault
output)
1 changeover contact output indicates that the
inverter protective function has activated and the
output stopped.
Fault: discontinuity across B-C (continuity across A-
C),
Normal: continuity across B-C (discontinuity across
A-C)
Contact capacity:230VAC
0.3A
(power factor =0.4)
30VDC 0.3A
O
p
e
n
col
le
ct
or
RUN
Inverter running
Switched low when the inverter output frequency is
equal to or higher than the starting frequency (initial
value 0.5Hz). Switched high during stop or DC
injection brake operation.
∗
Permissible load 24VDC
(maximum 27VDC) 0.1A
(a voltage drop is 3.4V
maximum when the signal
is ON)
∗
Low indicates that the open
collector output transistor is
ON (conducts).
High indicates that the
transistor is OFF (does not
conduct).
FU
Frequency detection
Switched low when the inverter output frequency is
equal to or higher than the preset detected frequency
and high when less than the preset detected
frequency.
∗
SE
Open collector output
common
Common terminal of terminal RUN and FU.
—
—
Pu
lse
FM
For meter
Select one e.g. output frequency
from monitor items.
Not output during inverter reset.
Not output during inverter reset.
The output signal is proportional to
the magnitude of the
corresponding monitoring item.
Output item:
Output
frequency (initial
setting)
Permissible load current
1mA
1440 pulses/s at 60Hz
Type
Terminal
Symbol
Terminal Name
Description
Reference
Page
RS
-485
—
PU connector
With the PU connector, communication can be made through RS-485.
Conforming standard: EIA-485 (RS-485)
Transmission format: Multidrop link
Communication speed: 4800 to 38400bps
Overall length: 500m
US
B
—
USB connector
The FR Configurator can be operated by connecting the inverter to the personal
computer through USB.
Interface: conforms to USB1.1
Transmission speed: 12Mbps
Connector: USB mini B connector (receptacle mini B type)
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