Mitsubishi Electric FR-A740-00023 Instruction Manual page 35

Terminal Terminal
Symbol Name
Inverter
RUN
running
Up to
SU
frequency
Overload
OL
warning
Instantaneous
IPF
power failure
Frequency
FU
detection
Open collector
SE
output common
Analog current
CA
output
Analog voltage
AM
output
*1 Low indicates that the open collector output transistor is on (conducts).
High indicates that the transistor is off (does not conduct).
*2 Not output during inverter reset.
(3) Communication
Terminal Terminal
Symbol Name
PU
-- -- -- - -- -- - -- -- -- - -
connector
Inverter
TXD+
transmission
TXD-
terminal
Inverter
RXD+
reception
RXD-
terminal
SG Earth (Ground)
USB
-- -- -- - -- -- - -- -- -- - -
connector
Description
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.
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.
*1
Switched low when stall prevention is
activated by the stall prevention
function. Switched high when stall
prevention is cancelled.
*1
Switched low when an instantaneous
power failure and under voltage
protections are activated.
*1
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.
Common terminal for terminals RUN, SU, OL, IPF, FU
Select one e.g. output frequency from
monitor items.
*2
The output signal is proportional to the
magnitude of the corresponding
monitoring item.
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
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
The FR-Configurator can be performed by connecting the inverter to the personnel
computer through USB.
Interfase:Conforms to USB1.1
Transmission speed:12Mbps
Connector:USB B connector (B receptacle)
Control circuit specifications
Specifications
*1
Permissible load
24VDC (27VDC
maximum) 0.1A
(A voltage drop is
Alarm code (4bit)
2.8V maximum
output (Refer to page
when the signal is
263)
on.)
*1
Load impedance
200Ω to 450Ω
Output signal 0 to
20mADC
Output item:
Output signal 0 to
Output frequency
10VDC
(initial setting)
Permissible load
current 1mA
(load impedance
10kΩ or more)
Resolution 8 bit
Description
Rated Refer to
page
230
230
230
230
230
-- -- -- - -- -- - -- -- -- - - -- -- -
251
251
Refer to
page
315
317
347
25
2