Mitsubishi Electric 800 Series Instruction Manual page 33

 Diagnosis using the Brake feedback (SBCFB) signal
• The brake status can be checked by the Brake feedback (SBCFB) signal. This function is always active while the SBC
function is enabled.
• The status of the SBC signal and the SBCFB signal are monitored, and "E.SAF" (fault detail code 76) is displayed when
the signal status is different from the one shown in the following table for the time longer than the time set in Pr.S027.
SBC signal
Pr.S026 = "0 (initial value)"
OFF OFF
ON ON
NOTE
• When functions are assigned to terminals SY1 and SY2, set Pr.S070 SY1/SY2 terminal test pulse diagnosis execution
selection and Pr.S071 SY1/SY2 terminal test pulse off time to perform fault diagnosis with test pulse signals. (Refer to
page 21.)
SBCFB signal
Pr.S026 = "1"
ON
OFF
Brake status
Operating
Released
3
4
5
5
5
6
7
8
9
10
33
5. Safety Sub-Functions
5.5 SBC function