Mitsubishi Electric 800 Series Instruction Manual page 46

Safety stop function operation
Internal
Input terminal
Input
safety
circuit
power
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 turns OFF.
Fault type
Option fault
Communication option fault
Parameter storage device fault
(control circuit board)
Retry count excess
Parameter storage device fault
(main circuit board)
Operation panel power supply
short circuit
24 VDC power fault
Safety circuit fault

When the internal safety circuit is operated normally (no faults occurs), terminal So (SO) and the SAFE signal remain ON until "E.SAF" is
displayed. Terminal So (SO) and the SAFE 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.

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.

To assign the function of the SAFE signal to an output terminal, set either value shown in the following table in any parameter from Pr.190 to
Pr.196 (Output terminal function selection).
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
Output
terminal
,
 

S2 So (SO)
― OFF OFF
ON ON OFF

OFF OFF OFF

ON OFF OFF

OFF ON ON

ON OFF OFF
OFF OFF OFF
ON OFF OFF
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
Pr.190 to Pr.196 setting
Positive logic Negative logic
80 180
page 146.)
Output
signal
Inverter running
, ,
  status
SAFE
Output shutoff (Safe state) Not displayed
Drive enabled
Output shutoff (Safe state) Displayed

Output shutoff (Safe state) Displayed

Output shutoff (Safe state) Not displayed

Output shutoff (Safe state) Displayed
Output shutoff (Safe state) Displayed
Output shutoff (Safe state) Displayed
Output shutoff (Safe state) Displayed
Fault type
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
INSTALLATION AND WIRING
Control circuit
Operation panel indication
E.SAF SA
 
Not displayed
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

2
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