Safety Stop Function Operation; Internal Safety Circuit Failure - Mitsubishi Electric FR-A800 Installation Manuallines

3.5.3 Safety stop function operation

Input power
S1-SIC
—
OFF
Short
Open
ON
Short
Open
*1
At an internal safety circuit failure, the operation panel displays one of the faults shown below.
*2
SA is displayed on the operation panel when both of the S1 and S2 signals are in the open status and no internal safety circuit failure
exists.
*3
ON: Transistor used for an open collector output is conducted.
OFF: Transistor used for an open collector output is not conducted.
*4
N/A denotes a condition where circuit fault does not apply.

3.5.4 Internal safety circuit failure

At an internal safety circuit failure, the terminal SO turns OFF.
The following faults can cause the internal safety circuit failure (terminal SO = 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 terminal power supply
short circuit
24 VDC power fault
Safety circuit fault
Overspeed occurrence
Speed deviation excess detection
For more details, refer to the Safety stop function instruction manual (BCN-A23228-001).
(Find a PDF copy of this manual in the enclosed CD-ROM.)
Input signal
Internal safety
circuit failure
S2-SIC
—
Short
Open
Open
Short
Operation panel
indication
E.OPT
E.OP1
E.PE
E.RET
E.PE2
E.CTE
E.P24
E.SAF
E.OS
E.OSD
Output signal
*1
*3
SO
— OFF
No failure ON
Failure OFF
*2
ON
No failure
Failure OFF
*4
OFF
N/A
*4
OFF
N/A
Error Definition
Signal loss detection
Excessive position fault
Brake sequence fault
Encoder phase fault
CPU fault
Internal circuit fault
WIRING
Inverter operation enable signal
Output shutoff (Safe state)
Drive enabled
Output shutoff (Safe state)
Output shutoff (Safe state)
Output shutoff (Safe state)
Output shutoff (Safe state)
Output shutoff (Safe state)
Operation panel
indication
E.ECT
E.OD
E.MB1 to E.MB7
E.EP
E.CPU
E.5
E.6
E.7
E.13
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