Status Monitor (Sm) Function; Multiple Operation Commands For Safety Sub-Functions - Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual

Status monitor (SM) function

This function outputs each status of SSM, SBC, SDI, SLI, SLT, STO, SOS, SS1, SS2, and SLS in signals. This is a function
designed specifically for the safety sub-functions and differs from the function defined in IEC/EN 61800-5-2. For details on the
devices, refer to the following.
Page 331 I/O function

Multiple operation commands for safety sub-functions

For operation commands for safety sub-functions, operation commands with the same function may be input simultaneously.
(For example, SS1C (SS1 command) input and SS1 input due to an alarm occurrence may occur simultaneously.)
When there are multiple operation triggers for a function, that function is activated when any one of them is valid. The
following shows the operation sequence when an alarm occurs while SS1 is activated by SS1C (SS1 command).
Servo motor speed
ON (disabled)
SS1C (SS1 command)
OFF (enabled)
ON (disabled)
ALM (malfunction)
OFF (enabled)
Disabled
SS1 operation
Enabled
ON (disabled)
STOS (STO output)
OFF (enabled)
There are two triggers for the SS1 function, namely SS1C (SS1 command) input and ALM (Malfunction), but the only timer
that counts the SS1/SS2 deceleration monitor time is the one that was counting from SS1C (SS1 command) that was input
first. When SS1C (SS1 command) returns to on, the SS1 function is enabled by ALM (Malfunction), and thus the SS1 function
continues the operation.
Normal operation SS1 in progress
SS1/SS2 operation time
0 r/min
STO state
6 FUNCTIONAL SAFETY
6.4 Safety sub-function
6
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