ABB AC500-S Safety User Manual page 248

Configuration and programming
AC500-S libraries > SafetyBlocks_PLCopen_AC500_v22.lib
NOT MS_11 AND NOT MS_12 AND F_TRIG at MS_21 AND MS_22
Backward direction
Muting condition 11 (to state 8122) (MS_22 is the first actuated entry switch). Start timer
MaxMutingTime:
MutingEnable AND (NOT MS_11 AND NOT MS_12 AND NOT MS_21 AND R_TRIG at MS_22)
Muting condition 12 (from state 8122 to state 8112) (MS_21 is the second actuated entry
switch):
MutingEnable AND (NOT MS_11 AND NOT MS_12 AND R_TRIG at MS_21 AND MS_22)
Muting condition 13 (MS_12 is the first released exit switch). Stop timer MaxMutingTime:
MS_11 AND F_TRIG at MS_12 AND NOT MS_21 AND NOT MS_22
Specification of In state 8000 - (NOT MutingEnable AND R_TRIG at MS_11) OR (NOT MutingEnable AND
wrong muting
sequences:
In state 8011 - NOT MutingEnable OR NOT MS_11 OR MS_21 OR MS_22
In state 8012 - R_TRIG at MS_11 OR R_TRIG at MS_12 OR F_TRIG at MS_22
In state 8122 - NOT MutingEnable OR MS_11 OR MS_12 OR NOT MS_22
In state 8112 - F_TRIG at MS_11 OR R_TRIG at MS_21 OR R_TRIG at MS_22
Typical timing
diagram
Fig. 104: Timing diagram for SF_MutingSeq with S_StartReset = TRUE
The FB detects the following error conditions:
● Muting sensors MutingSwitch11, MutingSwitch12, MutingSwitch21, and MutingSwitch22 are
activated in the wrong order.
● Muting sequence starts without being enabled by MutingEnable.
● A faulty muting lamp is indicated by S_MutingLamp = FALSE.
248
R_TRIG at MS_22) OR (MS_12 OR MS_21) OR (MS_11 AND MS_22)
3ADR025091M0208, 12, en_US 2020/06/19