ABB AC500-S Safety User Manual page 195

DiagCode
1000_0000_0000_0001
8001
hex
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 Dia-
gCode number will be assigned for subsequent states.
4.6.4.2 SF_Equivalent
Standards Requirements
EN 954-1:1996 6.2 General safety principles, Idle current
6.2 Error detection for category 3 and 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 FBs.
2020/06/19
Description
An activation has been detected by the FB and the FB is now activated, but
bin
the S_Out safety output is set to FALSE. This code represents the Init state
of the operational mode. For a generic example, the I/O setting could be:
Activate = TRUE
S_In = FALSE or TRUE
Ready = TRUE
Error = FALSE
S_Out = FALSE
The activated FB detects a safety demand, e.g., S_In = FALSE. The safety
bin
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 The safety demand is now withdrawn, but the safety output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 operational
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
3ADR025091M0208, 12, en_US
Configuration and programming
AC500-S libraries > SafetyBlocks_PLCopen_AC500_v22.lib
195