29
Control circuit specifications
2
WIRING
(2) Output signals
(3) Communication
Type
Termin al
Symbol
Termi nal
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
128
A2,
B2,
C2
Relay output 2 1 changeover contact output 128
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).
128
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
128
OL Overload
warning
Switched low when stall prevention is
activated by the stall prevention
function. Switched high when stall
prevention is cancelled.
128
IPF Instantaneous
power failure
Switched low when an instantaneous
power failure and under voltage
protections are activated.
128
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.
128
SE Open collector
output common Common terminal for terminals RUN, SU, OL, IPF, FU -------------------- -----
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. 56 and Pr. 158.
(Refer to page 147)
Output item:
Output frequency
(initial setting)
Load impedance
200Ω to 450Ω
Output signal 0 to
20mADC
147
AM Analog voltage
output
Output signal 0 to
10VDC
Permissible load
current 1mA
(load impedance
10kΩ or more)
Resolution 8 bit
147
Type
Termin al
Symbol
Termin al
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 (1640.42feet)
209
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 (1640.42feet)
211
TXD-
RXD+ Inverter
reception
terminal
RXD-
SG
Earth (Ground)