Chapter 4 Operating Instructions
M4000 Adv., Adv. A/P, Area
32 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8010797/YT72/2016-02-19
Subject to change without notice
Muting
4.2.4 Muting using two sensors, serial placement (one sensor pair in the hazardous
a
rea), with additional signal C1, exit monitoring with End of muting by ESPE
The Exit monitoring function is supported by M4000 systems with firmware V1.50.
In the case of the Exit monitoring function the muting sensors are at the side of the haz-
ardous area. The material moves out of the hazardous area. As soon as all muting sensors
(A1 and A2 and C1) are actuated, the protection provided by the protective device (ESPE)
is bypassed and this situation remains in force until the muting hold time configured
(0.5 s … 4 s) has elapsed or the protective device becomes clear. The muting hold time
starts as soon as one of the muting sensors becomes clear. The muting sensor (additional
signal C1) muss always be activated before the muting sensors A1 and A2 (see section
“Additional signal C1” on page 49).
The following requirements must be met:
Condition Description
C1 & A1 & A2 Muting starts as soon as this condition is met. C1 must always
be activated before A1 and A2.
A1 & ESPE or
A2 & ESPE
Muting applies as long as this condition is met. The muting
hold time counts down.
Note
Fig. 21: Muting with two
sensors, serial placement,
with additional signal C1
with two sensors, serial
placement, with additional
signal C1
1
2
3
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