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

Page: 78 / 1218

Control circuit Installation and wiring
2 - 48
Safety stop signal
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
Ω
Input current
4 to 6 mA DC
(with 24 V DC
input)
2-63
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
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
24 V DC (27 V DC at
maximum), 0.1 A
(The voltage drop
is 3.4 V at
maximum while
the signal is ON.)
SOC
Safety monitor output
common
Common terminal for terminal SO.
⎯
Tab. 2-17: Safety stop signal