Fagor SPM, Руководство пользователя

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Fagor Automation S.Coop
SPM motor manual
11
Operating modes
Next, the motor operating modes are described showing the different zones in the di-
agram below [ power-torque / speed ]. The motor behavior characteristics are different
in each of them.
For spindle motors it is crucial to have an ample constant power zone. Three operating
zones are established in order to analyze this characteristics.
The following graph shows each zone and the motor operating mode in each if them.
Operating zones:
• Zone 1:
This zone is established from the resting state [zero speed (0 rpm)] to the rated
operation point [rated or base speed].
The torque supplied by the motor is the same as the rated or nominal [ M
N
] and
it is constant in the whole zone. Its value is obtained by multiplying the power
generated by the motor [which is directly proportional to the current running through
its rotor until the rated operation point is reached] and its corresponding turning
speed.
The power generated by the motor is directly proportional to the speed up to the
rated operation point where it reaches the rated or nominal power [ P
N
].
fig.3 Power and torque characteristics depending on speed n.
M
rated
M , P
n
rated
P
max
Power S6 - 40% -
Power S1
n
1
n
P
rated
ZONE 1 ZONE 2 ZONE 3
M
max
Torque
S6 - 40%-
Torque
S1
n
max