Amada ML-2350A-CE, Operation Manual, Page: 224 / 235

224
ML-2350A/2351A
Explanation of Terminology
L
L
Line terminal. This is a terminal to be connected to a line conductor of the external circuit.
Abbreviation of Live. → P.47
Laser
LASER is an abbreviation of Light Amplification by Stimulated Emission of Radiation, which is
light artificially generated by laser oscillator. Laser is classified into solid laser, liquid laser, and
gas laser by medium. YAG Laser is typical solid laser.
Laser chamber
This is a laser oscillation vessel. It includes a flashlamp and a YAG rod. The laser chamber is a
part of the laser oscillator. → P.35
Laser light
Light artificially generated by laser oscillator. This laser light is widely used for electronic devices,
optical communication, medial treatment, metal working, and other fields. As a matter of feature,
laser light goes straight, its wavelength is fixed and the phase (wave peak and hollow) is the
same, so high energy can be obtained by concentrating light to one point.
Laser power feedback
Control function that is adopted for this laser. The measured value and average power of output
laser energy is returned to the input side so that they can be checked immediately after a laser
output.
Laser safety supervisor
Person who is responsible for laser safety management, having an enough knowledge to execute
laser hazard assessment and safety management. Regarding the facilities or place in which the
laser product exceeding class 3B of JIS C 6802 "Safety Standard for Laser Products" is operated,
it is necessary to appoint the laser safety supervisor and prepare a management area. Since
most laser welder comes under class 4 of the highest hazard, the laser safety supervisor must be
appointed. → P.10
Leakage breaker
Safety device to shut off the circuit at detection of a leakage current that flows from the power
supply to the ground.
N
NAK
Control code that is used for communication between computers. Negative response that is
sent from computer of the transmission destination to the transmission source. Abbreviation of
Negative Acknowledgement. → P.157
Nd: YAG laser
Name of laser that is generated by adding neodymium (Nd) to Yttrium-Aluminum-Garnet crystals.
Laser light with a wavelength of 1064 nm that is generally called YAG laser is oscillated. YAG is
an abbreviation of Yttrium-Aluminum-Garnet.
O
Optical fiber
Cable to transmit light that is made of quarts glass or thin plastic fiber. This cable consists of
a core of the center and a clad covering the surroundings, and light is propagated in the core.
The mode is classified into 2 types, namely, multi mode and single mode by the number of light
propagation modes, and the multi-mode optical fiber is divided into step index (SI) and graded
index (GI) by refractive index distribution of the core.
Oscillator
In the laser welder, the oscillator means a unit to amplify and oscillate laser light. This unit
consists of a laser medium, excitation source, amplifier, etc. Laser is amplified and oscillated
when the laser medium is excited by excitation source.
Output unit
Unit to output the laser light transmitted by optical fiber to the workpiece. The optical fiber
connected to the input unit is connected. → P.22 and P.53
P
Parity
Method to check whether data is correctly transmitted or received in data communication. A data
error is detected by using bit information or parity bit that is added to the data. Parity means Odd
and Even.
Parity bit
Data that is added to the source data to detect an error in data communication. The receiving
side collates with the parity bit by checking whether the number of 0s or 1s in the obtained bit
train is odd or even. When an error is found, data is retransmitted or processing is interrupted. →
P.153