Mitsubishi Electric 800 Series Installation Manualline page 15

Matrix of safety related signals
Input Internal safety
power circuit status
OFF
ー
Normal
Normal
Normal
Normal
ON
Fault
Fault
Fault
Fault

ON: The transistor is conducted. OFF: The transistor is not conducted.

When not using the safety stop function, short across terminals S1 and PC, S2 and PC, and SIC
and SD to use the inverter. (In the initial status, terminals S1 and PC, S2 and PC, and SIC and
SD are respectively shorted with shorting wires.)

If any of the protective functions shown in the following table is activated, the terminal So(SO)
and the SAFE output signal turns OFF
Error definition
Option fault
Communication option fault
Parameter storage device fault
Retry count excess
Parameter storage device fault
Operation panel power supply
short circuit/
RS-485 terminals power supply
short circuit
24 VDC power fault
Safety circuit fault

If the internal safety circuit is operated normally, the terminal So(SO) and the SAFE output
signal remain ON until E.SAF is displayed, and the terminal So(SO) and the SAFE output signal
turn OFF when E.SAF is displayed.

SA is displayed when the terminals S1 and S2 are identified as OFF due to the internal safety
circuit failure.

If another fault occurs at the same time as E.SAF, the other fault can be displayed.

If another warning occurs at the same time as SA, the other warning can be displayed.
NOTE
• The response time from safety stop signal input to drive shutoff (safe state) is faster
than 8ms.
• Hold the ON or OFF status for 2 ms or longer to input signal to terminal S1 or S2.
Signal input shorter than 2 ms is not recognized.
Input
terminal ,

S1 S2
ー ー
ON ON
ON OFF
OFF ON
OFF OFF
ON ON
ON OFF
OFF ON
OFF OFF
Operation
panel indication
E.OPT
E.OP1 to E.OP3
E.PE
E.RET
E.PE2
E.CTE
E.P24
E.SAF
Operation check for the safety stop function
Output
terminal

So(SO)
OFF Not displayed
Not displayed

ON
Displayed

OFF
Displayed

OFF
Not displayed

ON
OFF Displayed
OFF Displayed
OFF Displayed
OFF Displayed
Error definition
Overspeed occurrence
Speed deviation excess detection
Signal loss detection
Excessive position fault
Brake sequence fault
Encoder phase fault
Magnetic pole position unknown
CPU fault
Internal circuit fault
Operation panel indication
E.SAF

Not displayed
Not displayed
Displayed
Displayed
Displayed
Not displayed
Displayed
Displayed
Displayed
Operation
panel indication
E.OS
E.OSD
E.ECT
E.OD
E.MB1 to E.MB7
E.EP
E.MP
E.CPU
E.5 to E.7
E.13
SA


15