28
Control circuit specifications
(2) Output signals
(3) Communication
Ty
p
e Terminal
Symbol
Terminal
Name
Description
Rated
Specifications
Refer to
Re
la
y
A1,
B1,
C1
Relay output 1
(Fault output)
1 changeover contact output indicates that the inverter
protective function has activated and the output stopped.
Fault: No conduction across B-C (Across A-C Continuity),
Normal: Across B-C Continuity (No conduction across A-C)
Contact capacity:
230VAC 0.3A
(Power
factor=0.4)
30VDC 0.3A
A2,
B2,
C2
Relay output 2
1 changeover contact output
O
p
en
c
ol
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 (27VDC
maximum) 0.1A
(A voltage drop is
3.4V maximum
when the signal is
on.)
Low is when the
open collector
output transistor
is on (conducts).
High is when the
transistor is off
(does not
conduct).
SU
Up to
frequency
Switched low when the output
frequency reaches within the range of
±10% (initial value) of the set frequency.
Switched high during acceleration/
deceleration and at a stop.
Alarm code (4bit)
output
OL
Overload
warning
Switched low when stall prevention is
activated by the stall prevention
function. Switched high when stall
prevention is cancelled.
IPF
Instantaneous
power failure
Switched low when an instantaneous
power failure and under voltage
protections are activated.
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 for terminals RUN, SU, OL, IPF, FU
--------------------
-----
Pulse
FM
For meter
Select one e.g. output frequency from
monitor items. (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 2mA
1440 pulses/s at
60Hz
AM
Analog signal
output
Output item:
Output frequency
(initial setting)
Output signal 0 to
10VDC
Permissible load
current 1mA
(load impedance
10k
Ω
or more)
Resolution 8 bit
Ty
p
e
Terminal
Symbol
Terminal
Name
Description
Refer to
RS-4
8
5
—
PU
connector
With the PU connector, communication can be made through RS-485.
(for connection on a 1:1 basis only)
Conforming standard
: EIA-485 (RS-485)
Transmission format
: Multidrop link
Communication speed : 4800 to 38400bps
Overall length
: 500m
R
S
-4
85
te
rm
inal
s
TXD+
Inverter
transmission
terminal
With the RS-485 terminals, communication can be made through RS-485.
Conforming standard
: EIA-485 (RS-485)
Transmission format
: Multidrop link
Communication speed : 300 to 38400bps
Overall length
: 500m
TXD-
RXD+
Inverter
reception
terminal
RXD-
SG
Earth (Ground)
