Mitsubishi Electric FR-A802-P Instruction Manual page 55

Control circuit
Safety stop function operation
Input Internal safety
power circuit status
OFF ―
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 faults shown in the following table occurs, terminal So (SO) and the SAFE signal turn OFF. When a fault occurs in parallel operated
inverters, only the inverters in which the protective function is activated stop the output of the SAFE signal.
Fault
Overcurrent trip
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 /
RS-485 terminals power supply short circuit
24 VDC power fault

When the internal safety circuit is operated normally, the terminal So (SO) and the SAFE signal remain ON until E.SAF is displayed, and the
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.

The table shows the signal status in positive logic. In negative logic, the signal status is opposite.

For SAFE signal, refer to the following table and assign the function by 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 information on the safety stop function, refer to the FR-A802-P Safety Stop Function Instruction Manual. The
manual in PDF format is contained in the supplied CD-ROM.
54
INSTALLATION AND WIRING
Input terminal
Output
, terminal
 
S1 S2 So (SO)
― ― OFF
ON ON ON

ON OFF OFF

OFF ON OFF

OFF OFF ON

ON ON OFF
ON OFF OFF
OFF ON OFF
OFF OFF OFF
Operation panel
indication
E.OPT
E.OP1 to E.OP3
E.PE
E.RET
E.PE2
E.CTE
E.P24
Pr.190 to Pr.196 settings
Positive logic Negative logic
80 180
Output
Inverter running
signal
status
, ,
  
SAFE
OFF Output shutoff (Safe state) Not displayed Not displayed
OFF Drive enabled
OFF Output shutoff (Safe state) Displayed

OFF Output shutoff (Safe state) Displayed

ON Output shutoff (Safe state) Not displayed Displayed

OFF Output shutoff (Safe state) Displayed
OFF Output shutoff (Safe state) Displayed
OFF Output shutoff (Safe state) Displayed
OFF Output shutoff (Safe state) Displayed
Fault
Safety circuit fault
Overspeed occurrence
Speed deviation excess detection
Signal loss detection
Excessive position fault
Brake sequence fault
Encoder phase fault
CPU fault
Internal circuit fault
Operation panel
indication
E.SAF SA
 
Not displayed Not displayed
Displayed
Displayed
Not displayed
Displayed
Displayed
Displayed
Operation panel
indication
E.SAF
E.OS
E.OSD
E.ECT
E.OD
E.MB1 to E.MB7
E.EP
E.CPU
E.5 to E.7
E.13
