ABB AC500-S Safety User Manual page 269

DiagCode
1000_0000_0000_0010
8002
hex
1000_0000_0000_0011
8003
hex
Note: If there are more operational states where safety output = TRUE, the next available DiagCode number
will be assigned for subsequent states.
4.6.6.2 SF_Equivalent
Standards Requirements
EN 954-1: 1996 6.2 General safety principles, Idle current
6.2 Error detection for category 3 und 4
This function block converts two equivalent BOOL inputs (both NO or NC) to one BOOL output, including
discrepancy time monitoring. This FB should not be used stand-alone since it has no restart interlock. It is
required to connect the output to other safety related functionalities.
30.03.2017
Description
The activated FB detects a safety demand ("Sicherheitsanforderung" in
bin
German), e.g., S_In = FALSE. The safety output is disabled. This is an
operational state where the S_Out safety output = FALSE. For a
generic example, the I/O setting could be:
Activate = TRUE
S_In = FALSE
Ready = TRUE
Error = FALSE
S_Out = FALSE
The safety output of the activated FB has been disabled by a safety
bin
demand. The safety demand is now withdrawn, but the safety output
remains FALSE until a reset condition is detected. This is an opera-
tional state where the S_Out safety output = FALSE. For a generic
example, the I/O setting could be:
Activate = TRUE
S_In = FALSE => TRUE (continuing with static TRUE)
Ready = TRUE
Error = FALSE
S_Out = FALSE
Configuration and programming
AC500-S Libraries > SafetyBlocks_PLCopen_AC500_v22.lib
AC500-S 269