Mitsubishi FR-A800

Control circuit
48
INSTALLATION AND WIRING
Communication
Safety stop signal
Type
Terminal
Symbol
Terminal name Terminal function description
Refer
to
page
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 link
Communication speed: 4800 to 115200 bps
Wiring length: 500 m
555
RS-485 terminals
TXD+
Inverter transmission terminal
The RS-485 terminals enables the communication by RS-485.
Conforming standard: EIA-485 (RS-485)
Transmission format: Multidrop link
Communication speed: 300 to 115200 bps
Overall length: 500 m
557
TXD-
RXD+
Inverter reception terminal
RXD-
SG Earthing (grounding)
USB
—
USB A connector
A connector (receptacle)
A USB memory device enables parameter
copies and the trace function.
Interface: Conforms to
USB1.1 (USB2.0 full-speed
compatible)
Transmission speed: 12
Mbps
60
USB B connector
Mini B connector (receptacle)
Connected to a personal computer via USB to
enable setting, monitoring, test operations of
the inverter by FR Configurator2.
60
Terminal
Symbol
Terminal name Terminal function description
Rated
specification
Refer
to
page
S1
Safety stop input
(Channel 1)
The terminals S1 and S2 are used for the safety stop input signal
for the safety relay module. The terminals S1 and S2 are used at
the same time (dual channel).
Inverter output is shutoff by shortening/opening between
terminals S1 and SIC, or between S2 and SIC.
In the initial status, terminals S1 and S2 are shorted with the
terminal PC by shorting wires. The terminal SIC is shorted with
the terminal SD. Remove the shorting wires and connect the
safety relay module when using the safety stop function.
Input resistance 4.7
k
Input current 4 to 6
mADC (with 24 VDC
input)
57
S2
Safety stop input
(Channel 2)
SIC
Safety stop input
terminal common
Common terminal for terminals S1 and S2. —
SO
Safety monitor output
(open collector output)
Indicates the safety stop input signal status.
Switched to LOW when the status is other than the internal
safety circuit failure. Switched to HIGH during the internal safety
circuit failure status.
(LOW is when the open collector output transistor is ON
(conducted). HIGH is when the transistor is OFF (not
conducted).)
Refer to the Safety stop function instruction manual (BCN-
A23228-001) when the signal is switched to HIGH while both
terminals S1 and S2 are open. (Please contact your sales
representative for the manual.)
Permissible load
D24 VDC (27 VDC at
maximum), 0.1 A (The
voltage drop is 3.4 V
at maximum while the
signal is ON.)
(The voltage drop is
3.4 V at maximum
while the signal is
ON.)
SOC
Safety monitor output
terminal common
Common terminal for terminal SO. —