24
Control circuit specifications
(2) Output signals
(3) Communication
Type
Terminal
Symbol
Terminal
Name
Description
Rated
Specifications
Refer to
Relay
A1,
B1,
C1
Relay output 1
(Fault output)
1 changeover contact output indicates that the inverter’s
protective function has activated and the output stopped.
Fault: No conduction across B and C (Across A and C Continuity),
Normal: Across B and C Continuity (No conduction across A and C)
Contact capacity:
230VAC 0.3A
(Power
factor=0.4)
30VDC 0.3A
123
A2,
B2,
C2
Relay output 2 1 changeover contact output 123
Open collector
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).
123
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
123
OL
Overload
warning
Switched low when stall prevention is
activated by the stall prevention
function. Switched high when stall
prevention is cancelled.
123
IPF
Instantaneous
power failure
Switched low when an instantaneous
power failure and under voltage
protections are activated.
123
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.
123
SE
Open collector
output common
C o m m o n t e r m i n a l f o r t e r m i n a l s R U N , S U , O L , I P F, F U -------------------- -----
Analog
CA
Analog current
output
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.
To set a full-scale value for monitoring
the output frequency and the output
current, set Pr. 55 and Pr. 56.
(Refer to page 142)
Output item:
Output frequency
(initial setting)
Load impedance
200 to 450
Output signal 0 to
20mADC
142
AM
Analog voltage
output
Output signal 0 to
10VDC
Permissible load
current 1mA
(load impedance
10k or more)
Resolution 8 bit
142
Type
Terminal
Symbol
Terminal
Name
Description Refer to
RS-485
—
PU
connector
With the PU connector, communication is available 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
204
RS-485 terminals
TXD+
Inverter
transmission
terminal
With the RS-485 terminals, communication is available through RS-485.
Conforming standard : EIA-485 (RS-485)
Transmission format : Multidrop link
Communication speed : 300 to 38400bps
Overall length : 500m
206
TXD-
RXD+
Inverter
reception
terminal
RXD-
SG
Earth (Ground)
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