28
Control circuit specifications
*2 Low indicates that the open collector output transistor is on (conducts).
High indicates that the transistor is off (does not conduct).
*3 Not output during inverter reset.
(3) Communication
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.
*2
Permissible load
24VDC 0.1A
(A voltage drop is
3.4V maximum
when the signal is
on.)
107
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.
*2
Alarm code (4bit)
output
107
OL
Overload
warning
Switched low when stall prevention is
activated by the stall prevention
function. Switched high when stall
prevention is cancelled.
*2
107
IPF
Instantaneous
power failure
Switched low when an instantaneous
power failure and under voltage
protections are activated.
*2
107
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.
*2
107
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.
*3
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
121
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
121
Type
Terminal
Symbol
Terminal
Name
Description Refer to
RS-485
—
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
. Communication speed : 4800 to 38400bps
. Overall length : 500m
172
RS-485 terminals
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
174
TXD-
RXD+
Inverter
reception
terminal
RXD-
SG
Earth (Ground)
Type
Terminal
Symbol
Terminal
Name
Description
Rated
Specifications
Refer to
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