Mitsubishi Electric FR-D720 K Series Instruction Manual page 32

NOTE
Set Pr. 267 and a voltage/current input switch correctly, then input analog signals in accordance with the settings.
Applying a voltage with voltage/current input switch in "I" position (current input is selected) or a current with switch in
"V" position (voltage input is selected) could cause component damage of the inverter or analog circuit of output
devices. (Refer to page 153 for details.)
(2) Output signal
Terminal
Type Terminal Name
Symbol
Relay output (fault
A, B, C
output)
RUN Inverter running
Open collector
SE
output common
FM For meter
(3) Communication
Terminal
Type Terminal Name
Symbol
— PU connector
(4) Safety stop signal
Terminal
Terminal Name
Symbol
Safety stop input
S1
(Channel 1)
Safety stop input
S2
(Channel 2)
Safety monitor output
SO
(open collector output)
Safety stop input
SC
terminal common
Description
1 changeover contact output indicates that the inverter
protective function has activated and the output stopped.
Fault: discontinuity across B-C (continuity across A-C),
Normal: continuity across B-C (discontinuity across A-C)
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.
(Low is when the open collector output transistor is ON
(conducts). High is when the transistor is OFF (does not
conduct).)
Common terminal of terminal RUN.
Select one e.g. output
frequency from monitor items.
Not output during inverter reset.
Not output during inverter reset.
The output signal is proportional
to the magnitude of the
corresponding monitoring item.
With the PU connector, communication can be made through RS-485.
 Conforming standard: EIA-485 (RS-485)
 Transmission format: Multidrop link
 Communication speed: 4800 to 38400bps
 Overall length: 500m
Description
Terminals S1 and S2 are for safety stop input signals used
with the safety relay module. Terminals S1 and S2 are used
simultaneously (dual channel). Inverter output is shut off by
shortening/opening across terminals S1 and SC and across
S2 and SC. In the initial status, terminals S1 and S2 are
shorted with terminal SC by shortening wire.
Remove the shortening wire and connect the safety relay
module when using the safety stop function.
The signal indicates the status of safety stop input. Low
indicates safe state, and High indicates drive enabled or fault
detected.
(Low is when the open collector output transistor is ON
(conducts). High is when the transistor is OFF (does not
conduct).)
If High is output when both of terminals S1 and S2 are open,
refer to the Safety stop function instruction manual (BCN-A211508-
000) for the cause and countermeasure.
(Please contact your sales representative for the manual.)
Common terminal for terminals S1, S2 and SO. Connected to
terminal SD inside of the inverter.
Control circuit specifications
Rated Specifications
Contact capacity: 230VAC
0.3A
(power factor =0.4)
30VDC 0.3A
Permissible load 24VDC
(maximum 27VDC) 0.1A
(a voltage drop is 3.4V
maximum when the signal
is ON)
Output item: Permissible load current
Output frequency (initial 1mA
setting) 1440 pulses/s at 60Hz
Description
Rated Specifications
Input resistance 4.7k
Voltage when contacts
are open
21 to 26VDC
Current when contacts
are short-circuited
4 to 6mADC
Permissible load 24VDC
(maximum 27VDC) 0.1A
(a voltage drop is 3.4V
maximum when the
signal is ON)
Refer to
Page
122
122
— —
131
Refer to
Page
181
Refer to
Page
27
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