Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 72

 Communication
Terminal
Type Terminal name
symbol
— PU connector
TXD+
Inverter transmission
terminal
TXD-
RXD+
Inverter reception
terminal
RXD-
GND
Earthing (grounding)
(SG)
USB A connector
—
USB B connector
 CC-Link IE Field Network (FR-A800-GF)
Terminal
Type
name
PORT 1
Communication can be made via the CC-Link IE Field Network.
PORT 2
 Safety stop signal
Terminal
Terminal name
symbol
Safety stop input
S1
(channel 1)
Safety stop input
S2
(channel 2)
Safety stop input
SIC
terminal common
Safety monitor
output
So (SO)
(open collector
output)
Safety monitor
SOC output
terminal common
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.
Terminal function description
Terminal function description
Use terminals S1 and S2 to receive the safety stop signal input
from the safety relay module. Terminals S1 and S2 can be used
at a time (dual channel).
The Inverter judges the condition of the internal safety circuit from
the status (shorted/opened) between terminals S1 and SIC, or
between S2 and SIC. When the status is opened, the inverter
output is shut off.
In the initial status, terminal S1 and S2 are shorted with terminal
PC by shorting wires. Terminal SIC is shorted with terminal SD.
Remove the shorting wires and connect the safety relay module
when using the safety stop function.
Common terminal for terminals S1 and S2.
The data of the inverter output status is output to the safety relay
module.
The output is in HIGH state during occurrence of the internal
safety circuit fault. The output is in LOW state otherwise.
(The open collector transistor is ON (conductive) in LOW state.
The transistor is OFF (not conductive) in HIGH state.)
Refer to the Safety Stop Function Instruction Manual if the output
becomes in HIGH state even though both terminals S1 and S2
are open. (Contact your sales representative for this manual.)
Common terminal for terminal So (SO).
Terminal function description
Interface: conforms to
USB1.1 (USB2.0 full-speed
compatible)
Transmission speed: 12
Mbps
Rated specification
Input resistance: 4.7 kΩ,
input current: 4 to 6
mADC (with 24 VDC
input)
—
Permissible load:
24 VDC
(27 VDC at maximum),
0.1 A
(The voltage drop is 3.4
V at maximum while the
signal is ON.)
—
2. INSTALLATION AND WIRING
1
Refer
to
page
2
625
3
4
627
5
84
6
84
7
Refer
8
to
page
9
107
10
Refer to
page
80
71
2.6 Control circuit