|
 |
|
The new, revolutionary Torque
range of rare earth, brushless servo motors is base
on a novel, multi polar magnetic design, resulting in
a high torque, ultra short servo motor particularly
suitable for direct drive applications.
The Ultract T motor is mechanically compatible (flange
and shaft) with equivalent torque servo motors but the
overall lenght and mass is about 1/3rd of that required
with a conventional design.
The shaft and front flange are particularly accurate
and robust for direct load coupling. The motors are
IP 65 protected (except the shaft) and are supplied
with MS connectors. |
|
|
The lamination free winding is shielded and double isolated
fot EMC control; the winding capacitance is not coupled to
the frame.
Built-in feedback sensor choice:
|
- Multiturn, absolute magnetic encoder with 17 bit resolution
+ 4096 turns with serial ENDAT interface
- resolver for low cost and basic performance applications.
|
| ENDAT based
units are supplied with electronic nameplate for auto setting
with all Phase Motion Control drives. The thermal sensing system
is based on 3 PTCs for protection and a KTY 85 linear sensor
for thermal monitoring. |
| |
| Technical
Data Summary Ultract T |
| Reference
data (winding independent) |
Symbol |
UL-T
503403 |
Units |
| Nominal
torque, S1,0 speed, suspended in free
air 1) |
Tnc |
2,15 |
Nmrms |
| Nominal
torque, S1,0 speed, flange mount 2) |
Tnw |
3,44 |
Nmrms |
| Peak
torque, S6 10% 1) |
Tpk |
6,12 |
Nmrms |
| Maximum
torque 3) |
Tul |
14 |
Nm |
| Maximum
structural speed |
Pn |
600 |
rad/sec |
| Critical
flux control torque 4) |
Pf |
15 |
Nm |
| Motor
constant |
Tw |
0,75 |
Nm/sqrt(W) |
| Pole
number |
PN |
20 |
|
| Connection |
|
Y |
|
| Physical
data (winding independent) |
|
|
|
| Rotor inertia |
Jm |
0,27 |
mkgm2 |
| Acceleration
at maximum torque |
apk |
22663 |
rad/s2 |
| Mass |
Msta |
1,65 |
kg |
| Insulation |
|
Class
H - F |
|
| Protection |
|
IP 65 |
|
| Thermal
data (winding independent) |
|
|
|
| Thermal imp.
in free air 1) |
Rthc |
3,000 |
K/W |
| Thermal
impedance, motor to flange 2) |
Rth |
0,990 |
K/W |
| Thermal capacity |
Cth |
693 |
J/K |
| Thermal
time constant susp. in air 1) |
Tc |
2.079 |
sec |
| Thermal time
constant flanged 2) |
Tw |
686 |
sec |
| Loss
at Tnc |
L0c |
36 |
W |
| Loss at Tnw |
Low |
84 |
W |
| Treshold
of built-in PTC |
PTCt |
130 |
oC |
| Electrical
data (winding dependent) |
|
|
|
| Nominal speed
flanged 4) |
wn |
419 |
rad/sec |
| Nominal
power, flanged 4) |
Pnw |
0,80 |
kW |
| Back E.M.F. between
phases |
Ke |
0,70 |
Vs |
| Torque
constant |
Kt |
1,21 |
Nm/Arms |
| Temp. coeff.
of E.M.F. and Kt |
dKe/dT |
-0,09 |
%/oC |
| Winding
resistance, 20oC |
Rw |
3,90O |
hm |
| Winding inductance |
Lw |
6,40 |
mH |
| Nominal
current, zero speed 1) |
In0 |
1,77 |
Arms |
| Nominal current,
zero speed 2) |
In |
2,99 |
Arms |
| Maximum
current 3) |
lpk |
14,43 |
Arms |
| Frequency |
fn |
667 |
Hz |
| Efficiency
at rated power 4) |
n |
0,90 |
|
|
|
Definitions: |
1) Motor suspended
horizontal in free air (worst case), ambient
temperature = 40 C, copper temperature = 130
C, case temperature = 105 C
2) Flange mount on solid steel flange, flange
temperature <= 80 C
3) Torque at which magnetic saturation prevents
further overloading with any duty factor
4) Speed sustained only with flange mount |
|
|
|
|
|
|
