Mitsubishi Electric FR-A820-00046 Instruction Manual page 86

Control circuit
Safety stop function operation
Input
power
OFF
ON
Tab. 2-22:
ON: Transistor used for an open collector output is conducted.
OFF: Transistor used for an open collector output 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 turns
OFF.
Fault record
Option fault
Communication option fault
Parameter storage device fault
Retry count excess
Parameter storage device fault
Operation panel power supply
short circuit/
RS-485 terminal power supply
short circuit
24 V DC power fault
Safety circuit fault
Overspeed occurrence
Tab. 2-23:
If the internal safety circuit is operated normally, the terminal SO remains ON until E.SAF is
displayed, and the terminal SO turns 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.
For more details, refer to the Safety stop function instruction manual (BCN-A23228-001).
(Find a PDF copy of this manual in the CD-ROM enclosed with the product.
2 - 56
Internal
Input terminal
safety
circuit
S1
status
— —
Normal ON ON
Normal ON OFF
Normal OFF ON
Normal OFF OFF
Fault ON ON
Fault ON OFF
Fault OFF ON
Fault OFF OFF
Description of Safety stop function operation
Operation panel
indication
E.OPT
E.OP1
E.PE
E.RET
E.PE2
E.CTE
E.P24
E.SAF
E.OS
Indication of internal safety circuit failures
Output
,
terminal Inverter operation
enable signal
S2 SO
Output shutoff
— OFF
(Safe state)
Drive enabled
ON
Output shutoff
OFF
(Safe state)
Output shutoff
OFF
(Safe state)
Output shutoff
ON
(Safe state)
Output shutoff
OFF
(Safe state)
Output shutoff
OFF
(Safe state)
Output shutoff
OFF
(Safe state)
Output shutoff
OFF
(Safe state)
Fault record
Speed deviation excess detection E.OSD
Signal loss detection
Excessive position fault
Brake sequence fault
Encoder phase fault
CPU fault
Internal circuit fault
Installation and wiring
Operation panel
indication
E.SAF SA
Not Not
displayed displayed
Not Not
displayed displayed
Displayed Displayed
Displayed Displayed
Not
Displayed
displayed
Not
Displayed
displayed
Displayed Displayed
Displayed Displayed
Displayed Displayed
Operation panel
indication
E.ECT
E.OD
E.MB1 to E.MB7
E.EP
E.CPU
E.5 to E.7
E.13