ABB AC500-S Safety User Manual page 232
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Also See for AC500-S:
- Safety user manual (452 pages) ,
- Application note (24 pages) ,
- System manual (119 pages)
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Configuration and programming
AC500-S libraries > SafetyBlocks_PLCopen_AC500_v22.lib
The function controls the guard lock and monitors the position of the guard and the lock. This
function block can be used with a mechanical locked switch.
The operator requests to get access to the hazardous area. The guard can only be unlocked
when the hazardous area is in a safe state. The guard can be locked if the guard is closed. The
machine can be started when the guard is closed and the guard is locked. An open guard or
unlocked guard will be detected in the event of a safety-critical situation.
The S_StartReset and S_AutoReset inputs shall only be activated if it is ensured that no haz-
ardous situation can occur when the PES is started.
Table 45: FB name: SF_GuardLocking
Name
Data type
VAR_INPUT
Activate
BOOL
S_GuardMonitoring BOOL
S_SafetyActive
BOOL
S_GuardLock
BOOL
UnlockRequest
BOOL
S_StartReset
BOOL
S_AutoReset
BOOL
Reset
BOOL
VAR_OUTPUT
Ready
BOOL
S_GuardLocked
BOOL
S_UnlockGuard
BOOL
232
Initial value
Description, parameter values
Ä Table 16 "General input parameters" on page 192
FALSE
FALSE
Variable.
Monitors the guard interlocking.
FALSE: Guard open.
TRUE: Guard closed.
FALSE
Variable.
Status of the hazardous area (EDM), e.g., based on
speed monitoring or safe time off delay.
FALSE: Machine in "non-safe" state.
TRUE: Machine in safe state.
FALSE
Variable.
Status of the mechanical guard locking.
FALSE: Guard is not locked.
TRUE: Guard is locked.
FALSE
Variable.
Operator intervention - request to unlock the guard.
FALSE: No request.
TRUE: Request made.
Ä Table 16 "General input parameters" on page 192
FALSE
Ä Table 16 "General input parameters" on page 192
FALSE
Ä Table 16 "General input parameters" on page 192
FALSE
Also used to request the guard to be locked again.
The quality of the signal must conform to a manual
reset device (EN 954-1 Ch. 5.4)
Ä Table 17 "General output parameters"
FALSE
on page 193
FALSE
Interface to hazardous area which must be stopped.
FALSE: No safe state.
TRUE: Safe state.
FALSE
Signal to unlock the guard.
FALSE: Close guard.
TRUE: Unlock guard.
3ADR025091M0208, 12, en_US
2020/06/19
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