HSD ES779, Перевод оригинальной инструкции, Страница: 19 / 200

1 Preliminary information
HSD S.p.A. © - h0101k01a.fm120718
19
Dynamic
balance quality
grade
The balance quality of a rotating object according to standard ISO 1940/1,
indicated by the letter G. Low G values indicate better balancing. G=0.4
indicates maximum balancing precision.
G assumes discrete values in multiples of 2.5 (G=0.4 G=1 G=2.5 …).
Rated voltage Maximum power supply voltage.
Rated
frequency
Minimum frequency at which the maximum power supply voltage is provided.
Rated
characteristics
The set of nominal values reached at rated frequency.
Service type S1
Operation at constant load with a duration sufficient to ensure that the motor
reaches thermal equilibrium.
Abbreviated to S1.
(
Standard CEI EN 60034-1 )
Service type S6
A sequence of identical operating cycles, each consisting of a period of
operation at constant load and a period of operation with no load, with
constant rpm and without any intermediate rest times.
Abbreviated to S6, followed by the percentage ratio between the period of
operation under load and the duration of one cycle.
For example: S6 40%
(40% operating time under load, 60% operating time without load)
(
standard CEI EN 60034-1 )
Torque and
power
T
= Torque
P
= Power
Ȧ
= Angular velocity
The precise definition of torque and power is beyond the scope of this
manual. Nevertheless, it can be said that torque is the force with which the
tool bites into the work piece being machined (and for the same torque, the
force increases as the diameter of the tool decreases). Power, instead, is
proportional to the torque and speed of rotation and, as such, determines the
maximum machining operation speed (in line with tool performance,
characteristics of the material being machined and the type of machining).
Coolant
Fluid, liquid or gas (including air) used to transfer heat from the spindle to the
environment.
Scheduled
maintenance
A series of activities required to maintain the condition and operation of the
product the same as that provided for by the manufacturer at the moment of
its introduction onto the market. The maintenance is carried out by means of
programmed adjustments, repairs, part replacements, etc..
T Nm
60
P W
˜
2
S Z
rpm
˜ ˜
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=