Mitsubishi Electric FR-A820-00046 Instruction Manual page 78

Control circuit
Safety stop signal
Terminal
Symbol
S1
S2
SIC
SO
SOC
Tab. 2-17:
2 - 48
Terminal name Terminal function description
The terminals S1 and S2 are used for the safety stop
input signal for the safety relay module. The terminals S1
Safety stop input
and S2 are used at the same time (dual channel).
(Channel 1)
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
Safety stop input
shorted with the terminal SD. Remove the shorting wires
(Channel 2)
and connect the safety relay module when using the
safety stop function.
Safety stop input
Common terminal for terminals S1 and S2.
terminal common
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.
Safety monitor output
(LOW is when the open collector output transistor is ON
(open collector
(conducted). HIGH is when the transistor is OFF (not
output) 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.)
Safety monitor output
Common terminal for terminal SO.
common
Safety stop signal
Installation and wiring
Refer
Rated
to
specification
page
Input resistance
4.7 kΩ
Input current
4 to 6 mA DC
(with 24 V DC
input)
⎯
2-63
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.)
⎯