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Control circuit specifications
(2) Output signals
(3) Communication
Type
Terminal
Symbol
Terminal
Name
Description Rated Specifications
Refer
to
Page
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 between B and C (conduction
between A and C)
Normal: Conduction between B and C (No conduction
between A and C)
Contact capacity: 230VAC 0.3A
(Power factor=0.4)
30VDC 0.3A
140
A2,
B2,
C2
Relay output 2 1 changeover contact output 140
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).
140
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
140
OL
Overload
warning
Switched low when stall prevention is
activated by the stall prevention
function. Switched high when stall
prevention is cancelled.
140
IPF
Instantaneous
power failure
Switched low when an instantaneous
power failure and under voltage
protections are activated.
140
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.
140
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 -------------------- -----
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.
To set a full-scale value for
monitoring the output frequency and
the output current, set Pr.56 and
Pr.158.
Output item:
Output
frequency
(initial setting)
Permissible load current 2mA
1440 pulse/s at 60Hz (general-
purpose motor control)
1440 pulse/s at 90Hz (IPM motor
control with 30K or lower)
1440 pulse/s at 120Hz (IPM
motor control with 37K or higher)
157
Analog
AM
Analog signal
output
Output item:
Output
frequency
(initial setting)
Output signal 0 to 10VDC
Permissible load current 1mA
(load impedance 10kΩ or
more) Resolution 8 bit
157
Type
Terminal
Symbol
Terminal
Name
Description
Refer to
Page
RS-485
—
PU
connector
With the PU connector, communication can be established 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
224
RS-485 terminals
TXD+
Inverter
transmission
terminal
With the RS-485 terminals, communication can be established through RS-485.
Conforming standard : EIA-485 (RS-485)
Transmission format : Multidrop link
Communication speed : 300 to 38400bps
Overall length : 500m
226
TXD-
RXD+
Inverter
reception
terminal
RXD-
SG
Earth (Ground)