Mitsubishi Electric FR-A862 Instruction Manual page 35

Control circuit
Terminal
Terminal name
symbol
RUN Inverter running
SU Up to frequency
OL Overload alarm
IPF Open collector output
FU Frequency detection
Open collector output
SE
common
For meter
FM
NPN open
collector output
AM Analog voltage output
Communication
Terminal Terminal
symbol name
— PU connector
Inverter
TXD+
transmission
TXD-
terminal
Inverter
RXD+
reception
RXD-
terminal
GND Earthing
(SG) (grounding)
USB A
connector
—
USB B
connector
34
INSTALLATION AND WIRING
Terminal function description
The output is in LOW state when the inverter output frequency is equal
to or higher than the starting frequency (initial value: 0.5 Hz). The output
is in HIGH state during stop or DC injection brake operation.
The output is in LOW state when the output
frequency is within the set frequency range
±10% (initial value). The output is in HIGH
state during acceleration/deceleration and at
a stop.
The output is in LOW state when stall
prevention is activated by the stall prevention
function. The output is in HIGH state when
stall prevention is canceled.
No function is assigned in the initial setting.
The function can be assigned by setting
Pr.192.
The output is in LOW state when the inverter
output frequency is equal to or higher than the
preset detection frequency, and is in HIGH
state when it is less than the preset detection
frequency.
Common terminal for terminals RUN, SU, OL, IPF, FU
Among several monitor items such as output
frequency, select one to output it via these
terminals. The signal is not output during an
inverter reset.
The size of 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.
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 link
Communication speed: 4800 to 115200 bps
Wiring length: 500 m
The RS-485 terminals support the RS-485 communication.
Conforming standard: EIA-485 (RS-485)
Transmission format: Multidrop link
Communication speed: 300 to 115200 bps
Overall length: 500 m
A connector (receptacle).
Plug a USB memory device into this connector to copy parameter
settings or use the trace function.
Mini B connector (receptacle).
By connecting an inverter to the personal computer through USB,
FR Configurator2 can be used for setting the inverter, monitoring,
and testing the operation.
Fault code (4 bits)
output.
Output item:
Output frequency (initial
setting)
This terminal can be
used for open collector
outputs by setting
Pr.291.
Output item:
Output frequency (initial
setting)
Terminal function description
Rated
specification
Permissible load:
24 VDC (maximum
27 VDC) 0.1 A
(The voltage drop is
2.8 V at maximum
while the signal is
ON.)
The open collector
transistor is ON
(conductive) in LOW
state.
The transistor is OFF
(not conductive) in
HIGH state.
———
Permissible load
current: 2 mA
For full scale:
1440 pulses/s
Maximum output
pulse: 50k pulses/s
Permissible load
current: 80 mA
Output signal 0 to 10
VDC, Permissible
load current: 1 mA
(load impedance 10
k or more)
Resolution: 8 bits
Interface: Conforms to USB 1.1
(USB 2.0 full speed compatible)
Transmission speed: 12 Mbps