Muting Function - Panasonic SF4B-F31G(V2) Instruction Manual

3-7 Muting Function

This function turns the safety function into invalid temporarily.
When the control output (OSSD 1 / 2) is ON, this function is available for passing the workpiece
through the sensing area of the device without stopping the device.
The muting function becomes valid when all the conditions listed below are satisfied:
● The control output (OSSD 1 / 2) shall be ON.
● The incandescent lamp with 3 to 10W shall be connected to the muting lamp output. (Note 1)
● Muting input A and B shall be changed from OFF (open) to ON. At this time, the time differ-
ence occurred by changing the muting input A and B into ON status shall be 0.03 to 3 sec.
(Note 2)
The following devices, photoelectric sensor with semiconductor output, inductive proximity sen-
sor, position switch on NO (Normally Open) contacting point, etc. are available for applying to
the muting sensor.
Notes: 1) The muting lamp diagnosis function can be set with the handy controller Ver. 2 or later (SFB-HC) (optional).
If the muting lamp diagnosis function is set to be invalid, the muting function is maintained even if a
lamp blows or a lamp is not connected.
2) 0 to 3 sec. is allowable by using the handy controller Ver. 2.1 (SFB-HC) (optional) and connecting NO
(Normally Open) type muting sensor to the input A, as well as connecting NC (Normally Closed) type
muting sensor to the input B.
© Panasonic Industrial Devices SUNX Co., Ltd. 2017
● Incorrect using of the muting control may cause any accident. Please under-
stand the muting control fully, and use it. As for the muting control, the following
international standards define the requirements
ISO 13849-1 (EN ISO 13849-1 / JIS B 9705-1):
"Safety of machinery - Safety-related parts of control systems - Part 1: General
principles for design, Article 5.9 Muting"
IEC 61496-1 (ANSI/UL 61496, JIS B 9704-1):
"Safety of machinery - Electro sensitive protective equipment - Part 1: General
requirements and tests, Annex A, A.7 Muting"
IEC 60204-1 (JIS B 9960-1):
"Safety of machinery - Electrical equipment of machines - Part 1: General re-
quirements, 9.2.4 Overriding safeguards"
EN 415-4:
"Safety of packaging machines - Part 4: Palletizers and depalletizers, Annex A,
A2.2 Muting"
ANSI B11.19-1990:
"for Machine Tools-Safeguarding When Referenced by the Other B11 Machine
Tool Safety Standards-Performance Criteria for the Design, Construction, Care,
and Operation" 4.2.3 Presence-Sensing Devices: Electro-Optical and Radio
Frequency (R.F.)
ANSI/RIA R15.06-1999:
"For Industrial Robots and Robot Systems - Safety Requirements, 10.4.5 Muting"
● Use the muting control while the machine cycle is not in danger mode. Maintain
safety with the other measure while the muting control is activated.
● For the application that the muting control is activated when a workpiece pass-
es through the sensor, place the muting sensor so that the conditions for the
muting control cannot be satisfied by intrusion of personnel when the workpiece
is passing through the sensor or the workpiece is not passing through it.
● The muting lamp should be installed in a position where it can always be seen
by operators who set or adjust the machine.
● Be sure to check the operation of the muting function before its use. Further-
more, check the state of the muting lamp (cleanliness or brightness, etc.)
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