Mitsubishi Electric FR-E720-0.1K(SC) Instruction Manual page 41

Control circuit specifications
(3) Safety stop function operation
Input Input signal
S1-PC
power
OFF —
Short
ON Open
Short
Open
∗1
At an internal safety circuit failure, one of E.SAF, E.6, E.7, and E.CPU is displayed on the operation panel.
∗2
SA is displayed when both of the S1 and S2 signals are in open status and no internal safety circuit failure exists.
∗3
ON: Transistor used for an open collector output is conducted.
OFF: Transistor used for an open collector output is not conducted.
For more details, refer to the Safety stop function instruction manual (BCN-A211508-004). (Please contact your sales
representative for the manual.)
32
Internal safety circuit
S2-PC
— —
No failure
Short
Failure
No failure
Open
Failure
Open Failure
Short Failure
Output signal
∗1
SAFE SAFE2
∗3
OFF OFF
OFF ON
OFF OFF
ON ON
∗2
OFF OFF
OFF OFF
OFF OFF
Inverter operation enable signal
∗3
Output shutoff (Safe state)
Drive enabled
Output shutoff (Safe state)
Output shutoff (Safe state)
Output shutoff (Safe state)
Output shutoff (Safe state)
Output shutoff (Safe state)