Parker EY Series - Rated Data According to Rated Voltage Variation

33 – Pvd3675_Gb_Ey_Septembre_2017
3.2.9. Rated data according to rated voltage variation
The nominal characteristics and especially the rated speed, maximal speed, rated
power, rated torque, depend on the nominal voltage supplying the motor considered as
the rated voltage. The rated data mentioned in the data sheet are given for each
association of motor and drive. Therefore, if the supply voltage changes, the rated
values will also change. As long as the variation of the rated voltage remains limited, for
instance to
±
10% of the nominal value, it is possible to correctly evaluate the new rated
values as illustrated below.
Example:
Extract of EY630EAK datasheet
If we suppose that the rated voltage U
n
=400 V
rms
decreases of 10% ; this means that
the new rated voltage becomes U
n2
=360 V
rms
.
Rated speed:
The former rated speed N
n
=4800 rpm obtained with a rated voltage U
n
=400 V
rms
and an
efficiency η=92% leads to the new rated speed N
n2
given as follows:
η
η
+−
=
1
*
2
2
n
n
nn
U
U
NN
Pn
Mn
Cooling type :
Nn Natural Air cooling
In Flange 400*400*12mm(ALU)
Un
UR
U
M
o
Environment :
I
o
Ambient temperature : 40°C MAX
M
p Altitude : < 1000 m
I
p
Thermal class : F
N
p
(according to IEC 60034-1)
J
Number of poles :
10
Ke
Kt
Efficiency :
Rb
at rated torque : 92.9 %
L
at 75% of rated torque :
91.5 %
All data are given in typical values under standard conditions. * Phase to Phase
Characteristics are given for an optimal drive of the motor. ** General tolerances ±7.5 %, rotor at 25°C
Winding resistance(25°C) *
Winding inductance *
7.26
1.17
0.674
Nm/A
r ms
Ω
mH
BRUSHLESS MOTOR
ELECTRONIC DRIVE
EY630EAK
DRIVE 11 / 40 Arms
Preliminary
Max. current
Max. speed
Rotor inertia
Low speed torque **
Permanent current at low speed
Max. torque **
DC voltage supply when motor is loaded
Voltage of the mains
3.14
6.25
Rated power **
Rated torque **
Rated speed
Rated current
Rated voltage *
Vrms
12
10.3
40
Torque sensitivity (25°C)
kW
Nm
Back emf constant at 1000 rpm (25°C)*
4800
0.00147
73
39
rpm
A
r ms
V
Nm
4800
5.56
354
kg.m²
N.m
A
r ms
V
r ms
400
540
V
r ms
A
r ms
rpm
No UL certification
rpmN
n
4278
92.0
92.01
400
360
*4800
2
=
+−
=