6 FUNCTIONAL SAFETY
6.3 Setting method
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[Pr. PSA23 Servo motor rated speed]
To execute speed monitoring, set the rated speed of the connected servo motor.
If the rated speed of the connected servo motor differs from the setting of this functional safety parameter, [AL. 537 Parameter
setting range error (safety sub-function)] occurs.
[Pr. PSC03 Functional safety - Rotation direction selection/travel direction selection]
Set the same value as [Pr. PA14 Travel direction selection] to [PSC03.0 Rotation direction selection/travel direction selection].
If a different value is set, [AL. 537 Parameter setting range error (safety sub-function)] occurs.
Hereinafter, [Pr. PA14] and [Pr. PSC03.0] are referred to as "POL".
When using this functional safety parameter, pay attention to the following safety sub-function.
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SDI function
The monitoring direction by the SDIP command is the address increasing direction (CCW or positive direction).
The monitoring direction when POL is set to "1" is the address increasing direction (CW or negative direction).
Note that when POL is set to "1", the monitoring direction and servo motor rotation/travel direction are different.
[Pr. PSL02 Functional safety - Linear encoder resolution setting - Numerator] [Pr. PSL03
Functional safety - Linear encoder resolution setting - Denominator]
When executing position monitoring or speed monitoring for a linear servo motor, set the same value as [Pr. PL02 Linear
encoder resolution setting - Numerator] and [Pr. PL03 Linear encoder resolution setting - Denominator]. If a different value is
set, [AL. 537 Parameter setting range error (safety sub-function)] occurs.
Test operation
Outline
It is possible to temporarily disable the safety sub-functions to perform the test operation. Set [Pr. PSA01.1 Input mode
selection] to "2". In test operation mode, some diagnosis functions and safety sub-functions are disabled. This mode can be
used for JOG operation, positioning operation, machine analyzer, etc., at the stage when the startup of safety devices has not
been completed. Note the following points regarding the test operation mode.
• Set the mode to the test operation mode.
• Input/output diagnosis is not performed.
• The safety sub-functions will be disabled, so perform the operation with caution.
• If the servo motor operates abnormally, stop the servo motor with EM2 (Forced stop 2).
For details regarding the test operation, refer to "Test operation" in the User's Manual (Introduction).
To terminate the test operation, set "0" or "1" in [Pr. PSA01.1 Input mode selection] in accordance with the system used.
DO forced output
This function forcibly switches the output signal of the CN8-6/CN8-7 pin on and off regardless of the servo status. Use this
function for purposes such as checking the signal output wiring. Operate this function on the DO Forced Output screen of MR
Configurator2.
This function can be used only when [Pr. PSA01 Input mode selection] is set to "2" (test operation mode).
• Clicking "ON" or "OFF" on the DO Forced Output screen will change the DO output. Deselecting "Switch the dual output at
the same time" can output the signals of the CN8-6/CN8-7 pin respectively.