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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-LC inverter outputs a fault signal and 'E.SAF' is indicated at the display.
When the FR-A800-LC 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-LC 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-LC inverter. When
'E.SAF' is indicated and a fault signal is output, a fault may be occurring in the FR-A800-LC inverter.
Self diagnostic test
The FR-A800-LC inverter has the self-diagnostic test function at power-ON.
If the FR-A800-LC 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 5.
2) If the inverter operation differs from the one shown in Table 5, the FR-A800-LC may have a fault.
3) If the inverter operates as described in Table 5, 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-LC inverter (see the Instruction Manual for how to clear the fault
history).
5
SAFETY PARAMETERS OF FR-A800-LC
The safety parameters of the FR-A800-LC inverter are depicted as follows.
14
SAFETY PARAMETERS OF FR-A800-LC
Table 8 Safety parameters of FR-A800-LC
Parameter
Safety Integrity Level
PFD
6.10x10
AVG
PFH
D
6.90x10
PL
d
MTTF
639 years
D
DC
60%
AVG
Value
Safety Integrity Level
(SIL) 2
-4
6.10x10
-9
6.90x10
e
100 years
90%
(SIL) 3
-4
-9
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