Mitsubishi Electric FR-A720-00030-NA Instruction Manual page 39

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Control circuit specifications
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
For meter
FM
NPN open
collector output
Analog signal
AM
output
(3) Communication
Terminal
Terminal
Symbol
Name
PU
- - -- -- - -- -- -- - -- -- - -
connector
Inverter
TXD+
transmission
TXD-
terminal
Inverter
RXD+
reception
RXD-
terminal
SG
Earth (Ground)
USB
- - -- -- - -- -- -- - -- -- - -
connector
28
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.
Switched low when stall prevention is
activated by the stall prevention
function. Switched high when stall
prevention is cancelled.
Switched low when an instantaneous
power failure and under voltage
protections are activated.
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. Not output during
inverter reset.
The output signal is proportional to the
magnitude of the corresponding
monitoring item.
Use Pr. 55, Pr. 56, and Pr. 866 to set full
scales for the monitored output
frequency, output current, and torque.
(Refer to page 263)
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 (1640.42feet)
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 (1640.42feet)
FR Configurator can be used by connecting the inverter to the personal computer
through USB.
Interface: Conforms to USB1.1
Transmission speed: 12Mbps
Connector: USB B connector (B receptacle)
*
Fault code (4bit)
output (Refer to page
279)
Output item:
Output frequency
(initial setting)
signals can be output
from the open
collector terminals by
setting Pr. 291.
Output item:
Output frequency
(initial setting)
Description
Rated
Refer to
Specifications
page
243
Permissible load
24VDC (27VDC
243
maximum) 0.1A
(A voltage drop is
2.8V maximum
when the signal is
ON.)
243
Low is when the
open collector
output transistor is
ON (conducts).
243
High is when the
transistor is OFF
(does not conduct)
243
- - -- -- - -- -- -- - -- -- --
-- -- -
Permissible load
current 2mA
257
1440pulses/s at
60Hz
Maximum output
pulse: 50kpulses/s
386
Permissible load
current : 80mA
Output signal 0 to
10VDC
Permissible load
current 1mA
257
(load impedance
10k or more)
Resolution 8 bit
Refer to
page
335
337
368

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