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Wiring

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ASDA -A3

3

3.10.7 Validation test

When installing, maintaining, or changing the servo drive, ensure to perform the following

validation tests. (It is suggested that you keep a record of the test results.)

 With EDM diagnosis (SIL3 system)

(1) When either SF1 or SF2 signal is off, the servo motor cannot be operated.

(2) When you switch the SF1 and SF2 signals to ON or OFF, the input / output logic has to

be in accordance with the following table.

Signal

STO

SF1+

SF1-

SF2+

SF2-

Diagnostic output

(EDM)

ON

ON

OFF

Status of opto-isolator

ON

OFF

OFF

ON

OFF

OFF

OFF

OFF

ON

 Without EDM diagnosis (SIL2 system)

(1) When either SF1 or SF2 signal is off, the servo motor cannot be operated.

(2) When SF1 and SF2 signals are both ON or OFF, neither AL501 nor AL502 is triggered.

Note:

1. Ensure to perform the validation tests once every 3 months even if you do not install, maintain, or

change the servo drive.

2. If an error or danger is diagnosed, switch the safety input signals to OFF to have the servo drive enter

the safe state.

3-132

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