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2. Installation and Wiring
2.6 Control circuit
Safety stop signal
Communication
*1
USB bus power connection is available. The maximum SCCR is 500 mA. A PU connector cannot be used during USB bus power connection.
Terminal
symbol
Terminal name
Terminal function description
Rated specification
Refer to
page
S1
Safety stop input
(channel 1)
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 PC, or between S2 and PC. 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. Remove the shorting wires and connect the
safety relay module when using the safety stop function.
Input resistance: 4.7 k
Ω
,
voltage when contacts
are open:
21 to 26 VDC,
current when contacts
are short-circuited:
4 to 6 mADC
S2
Safety stop input
(channel 2)
SO
Safety monitor
output (open
collector output)
The output status varies depending on the input status of the
safety stop signals.
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 FR-
E800 Instruction Manual (Functional Safety) (BCN-A23488-000)
when the signal is switched to HIGH while both terminals S1 and
S2 are open. (Contact your sales representative for this manual.)
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.)
SOC
Safety monitor
output terminal
common
Common terminal for terminal SO.
—
Type
Terminal
symbol
Terminal name
Terminal function description
Refer
to page
RS-4
85
—
PU connector
RS-485 communication can be made through the PU connector
Conforming standard: EIA-485 (RS-485)
Transmission format: Multidrop link
Communication speed: 300 to 115200 bps
Wiring length: 500 m
USB
—
Mini B connector (receptacle).
By connecting the inverter to a personal
computer via this connector, FR Configurator2
installed on the computer can be used for
setting the inverter, or monitoring or testing the
inverter operation.
Interface: conforms to USB
1.1 (USB 2.0 full-speed
compatible)
Transmission speed: 12
Mbps