Glossary Of Terms - Panasonic ST4 Instruction Manual

Control output (OSSD)
Output Signal Switching Device. A component of the light curtain that turns off when light of the
light curtain is blocked.
EMC Directive
On the one hand, the directive relating to electromagnetic compatibility (EMC) governs the
electromagnetic emissions of this equipment in order to ensure that, when used as intended,
such equipment does not disturb radio, telecommunication or other equipment. On the other
hand, the directive also governs the immunity of such equipment to ensure that this equipment
is not disturbed by radio emissions normally present when used as intended.
Emission Halt Function
This function enables receiver operation to be checked by turning OFF light emission. Light
emission can be halted by keeping the emission halt input terminals between T1 and T2 of the
controller open.
EN 55011
This standard specifies the limits and methods of measurement of radio disturbance
characteristics of industrial, scientific and medical (ISM) radio-frequency equipment.
EN 61496-1, IEC 61496-1/2, UL61496-1/2, JIS B 9704-1/2
These standards pertain to machine safety, especially electro-sensitive protective equipment
(ESPE). EN 61496-1, IEC 61496-1, UL 61496-1 or JIS B 9704-1 define general requirements,
examinations and effect analysis, EMC requirements, etc. IEC 61496-2, UL 61496-2 or JIS B
9704-2 specifies effective aperture angle, protection against extraneous light sources, etc, for
Active Opto-electronic Protective Devices (AOPDs).
FSD
Final Switching Device. Additional relays between the outputs of the controller and the
machinery.
ISO-13849-1 (JIS B 9705-1)
This standard specifies the safety-related matters of machine safety (control system).
Lockout
Lockout is one of the safe states of this device. Operation is stopped if the self-diagnosis
function determines that an irrecoverable failure (OSSDs do not operate normally, etc.) has
occurred. If an emitter is in the lockout condition, it will stop emitting light. If a receiver is in the
lockout condition, the OSSDs are turned OFF.
Machinery Directive
"Machinery" means an assembly of linked parts or components, at least one of which moves,
energized by electricity, compressed air, oil pressure, etc. The latest amendment to the
directive introduces safety components, placed on the market separately, into its scope.
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Glossary of Terms

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