Mitsubishi Electric 800 Series Manual page 77

 Connection diagram
To prevent automatic restart after a fault occurrence, connect the reset button of a safety relay module or a safety programmable controller across the terminals
So (SO) and SOC. The reset button acts as the feedback input for the safety relay module or the safety programmable controller.
RESET
Emergency
stop button
 Safety stop function operation
Input terminal
Input Internal safety
power circuit status
S1
OFF ― ―
Normal ON
Normal ON
Normal OFF
Normal OFF
ON
Fault ON
Fault ON
Fault OFF
Fault OFF

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 faults shown in the following table occurs, terminal So (SO) and the SAFE signal turn 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
Overspeed occurrence

If the internal safety circuit is operated normally, terminal So (SO) and the SAFE signal remain ON until E.SAF is displayed, and terminal So (SO) and the SAFE signal
turn OFF when E.SAF is displayed.

SA is displayed when 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.

For SAFE signal, refer to the following table and assign the function by Pr.190 to Pr.196 (output terminal function selection). The ON/OFF state of the output signal
is the one for the positive logic. The ON and OFF are reversed for the negative logic.
Output signal
SAFE

The use of SAFE signal has not been certified for compliance with safety standards.
For more details, refer to the Safety stop function instruction manual. (A PDF copy can be found in the enclosed CD-ROM. For how to use this CD-ROM, refer to
page 40.)
So (SO)
SOC
+24V
PC Fuse
24VDC
S2
S1
SIC
SD
Safety relay module
/ Safety programmable controller
Output terminal
,
 
S2 So (SO)
― OFF
ON ON

OFF OFF

ON OFF

OFF ON

ON OFF
OFF OFF
ON OFF
OFF OFF
Operation panel indication
E.OPT
E.OP1 to E.OP3
E.PE
E.RET
E.PE2
E.CTE
E.P24
E.SAF
E.OS
Pr.190 to Pr.196 setting
Positive logic Negative logic
80 180
Inverter
Logic
Gate
ASIC
Driver
CPU
G
Output signal ,
 
Inverter running status
SAFE
OFF Output shutoff (Safe state)
OFF Drive enabled
OFF Output shutoff (Safe state)

OFF Output shutoff (Safe state)

ON Output shutoff (Safe state)

OFF Output shutoff (Safe state)
OFF Output shutoff (Safe state)
OFF Output shutoff (Safe state)
OFF Output shutoff (Safe state)
Error definition
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
Safety stop function
R/L1 S/L2 T/L3
IGBTs
Gate
Driver
G
U V W
M
Operation panel indication
E.SAF SA
 
Not displayed Not displayed
Not displayed Not displayed
Displayed Displayed
Displayed Displayed
Not displayed Displayed
Displayed Not displayed
Displayed Displayed
Displayed Displayed
Displayed Displayed
Operation panel indication
E.OSD
E.ECT
E.OD
E.MB1 to E.MB7
E.EP
E.MP
E.CPU
E.5 to E.7
E.13
WIRING

15