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NOTE
• The response time from safety stop signal input to drive shutoff (safe state) is faster than 8ms.
• Hold the ON or OFF status for 2 ms or longer to input signal to terminal S1 or S2.
Signal input shorter than 2 ms is not recognized.
Diagnostic
If a failure is detected, the FR-A800/F800 inverter outputs a fault signal and 'E.SAF' is indicated at the display.
When the FR-A800/F800 inverter outputs a fault signal, take following actions.
1) Check that the input signal logic is the same between S1-SIC and S2-SIC. If these are different, correct the
input signal and reset the FR-A800/F800 inverter.
2) Disconnect the wires from terminals S1, S2, and SIC, then reset or turn OFF and ON the power. If the 'SA' is
indicated on the operation panel, there is a failure in the system except for the FR-A800/F800 inverter. When
'E.SAF' is indicated and a fault signal is output, a fault may be occurring in the FR-A800/F800 inverter.
Self diagnostic test
The FR-A800/F800 inverter has the self-diagnostic test function at power-ON.
If the FR-A800/F800 inverter outputs a fault signal (SA, E.SAF) at power-ON, take the action described above.
Operation check procedure
Check the operation of the safety stop function as follows.
1) Change and check the I/O state between S1-SIC and S2-SIC shown in Table 6.
2) If the inverter operation differs from the one shown in Table 6, the FR-A800/F800 may have a fault.
3) If the inverter operates as described in Table 6, check the system performance. Press the emergency switch,
press the start/restart button while a failure is detected (So (SO) -SOC opened), and so on.
4) Finally clear the fault history of the FR-A800/F800 inverter (see the Instruction Manual for how to clear the fault
history).
5

SAFETY PARAMETERS OF FR-A800/F800

The safety parameters of the FR-A800/F800 inverter are depicted as follows.
PFD
PFH
PL
MTTF
DC
Table 7 Safety parameters of FR-A800/F800
Parameter
Safety Integrity Level
(SIL) 2
-4
6.10x10
AVG
-9
D
6.90x10
d
660 years
D
60%
AVG
Value
Safety Integrity Level
6.10x10
6.90x10
e
100 years
90%
SAFETY PARAMETERS OF FR-A800/F800
(SIL) 3
-4
-9
13

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