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

3-8 Override Function

The override function forcibly turns the safety function into invalid. This function is used for the
following cases: when the customer who uses the muting function needs to start the device with
the control output (OSSD 1 / 2) be OFF status, when the device is required to continue operat-
ing even though the muting sensor becomes valid after the muting sensor is turned ON at the
starting of line.
The override function becomes valid when all the conditions listed below are satisfied:
● The incandescent lamp with 3 to 10W shall be connected to the muting lamp output. (Note 1)
● The signal shall be input to either muting input A or B, or to both of the inputs.
● The override input shall be short-circuited to 0V or +V, and the emission halt input / reset in-
put shall be opened. (3 sec. continuously)
If one of the three conditions above becomes invalid or timing exceeds 60 sec. (Note 2), the
override function becomes invalid.
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) By using the handy controller Ver. 2.1 (SFB-HC) (optional), the timing can be changed in the range of
60 to 600 sec. in units of 10 sec.
3) The override function operates only when the auto-reset is ON (the interlock is invalid).
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● 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.)
● Make sure manually to operate system for starting override function. Further-
more, the system shall be placed in area where all over the dangerous zone
shall be comprehend and out side of the dangerous zone.
● Using override function, make sure that there exist no operator in the danger-
ous zone, which may result in death or serious injury.
© Panasonic Industrial Devices SUNX Co., Ltd. 2017