What Is A Muting Sensor; Installation Of The Muting Sensor - Panasonic ST4 Instruction Manual

Functions
ANSI/RIA R15.06-1999: 'for Industrial Robots and Robot Systems - Safety
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Requirements, 10.4.5 Muting'
The muting function is active when all the conditions listed as follows are satisfied:
•
The control output (OSSD 1/2) is ON.
•
The incandescent lamp with 1 to 10W is connected to the muting lamp output.
•
The muting inputs between S-A and S-B (between S-C and S-D, or between S-E and
S-F) switch from OFF (open) to ON in a time range of 0 to 3 seconds.
However, if the time limit of 180sec is exceeded, the muting function will become inactive even if
the preceding conditions are still satisfied.

3.6.1 What Is a Muting Sensor

As muting sensors you can use photoelectric sensors with a semiconductor output, inductive
proximity sensors or position switches with NO (Normally Open) contacts.
The muting sensors have to turn on if an object is sensed. For NPN output this means 0V, for
PNP output +V.
DANGER!
Only use a device that satisfies these criteria for muting sensors.
!
If you use a device that does not meet these requirements, the
muting function may operate with a different timing than
expected, which could result in serious injury or death.
Always connect a muting lamp and use the preset muting lamp
diagnosis function (see page 74).
NOTE
The muting function can be used continuously even if the muting lamp
diagnosis function (see page 74) is not active. However, if the muting lamp
diagnosis function is not activated, perform the risk assessment by yourself
according to the standards or regulations applicable for the respective region or
country before using the muting function.

3.6.2 Installation of the Muting Sensor

In the following installation example, the muting sensors A and A' are PNP output type sensors.
The muting sensors B and B' are NPN output type sensors.
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