REXROTH MKD025A-144, Manual

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Synchronous Motors MKD MKD071
8-1
DOK-MOTOR*-MKD*******-PR07-EN-P Version7.0 19.05.2004
8 MKD071
8.1 Technical Data
Description Symbol Unit MKD071B-024
Cooling mode – Natural Natural Surface
Motor overtemperature 60K 100K 60K /100K
Electric parameters
Characteristic motor speed n
K
min
-1
2000
Continous torque at standstill M
dN
Nm 8,0 9,0 12,0
Continous current at standstill I
dN
A 4,4 5,1 6,6
Peak current I
max
A 19,8
Torque constant at 20°C
1
) K
m
Nm/A 2,01
Voltage constant at 20°C K
E(eff)
V/1000min
-1
174,9
Winding resistance at 20°C R
12
Ω
8,4
Winding inductace L
12
mH 34,4
Number of pole pairs p 4
Rated data
2
)
Rated speed n
N
min
-1
2000 2000 2000
Rated torque M
N
Nm 5,8 6,8 10,5
Rated current I
N
A 2,2 2,7 4,1
Rated power P
N
kW 1,4 1,8 2,7
Rated voltage U
N
V 372 377 395
Rated frequency f
N
Hz 100 100 100
Mechanical parameters
Rotor inertia J
M
kgm² 8,7 x 10
-4
Theoretical maximum torque M
max
Nm 32
Minimum strand cross-sectíon
4
) S mm
2
1 1 1
Thermal time constant T
th
min 45 45 20
Maximum speed n
max
min
-1
4000
Motor mass
3
)
5
) m kg 8,8
Perm. storage and transport temp. T
L
°C -20 to +80
Permissible ambient temperature
6
) T
um
°C 0 to +40
Max. setup height
6
) h m 1000 above NN
Protection category
7
) IP65
Insulation class (according to DIN VDE 0530 Part 1) F
Housing coat Prime coat black in a/w RAL 9005
1
)
2
)
3
)
4
)
5
)
6
)
7
)
K
m
is to be used for calculations with crest values (I
dN
, I
max
). For calculations with root-mean-square values (rated data), the torque
constant K
m
must be multiplied by a factor of
2
.
Values determined according to EN 60034-1. Current and voltage specified as root-mean-square values.
Use the declared value in bracket for motors holding brake.
Applicable to REXROTH cables. Rated according to VDE0298-4 (1992) and installation type B2 according to EN 60204-1 (1993) at
an ambient temperature of 40 °C.
Without blower unit.
If the limits specified are exceeded, the performance data must be reduced if necessary. For reduction factors, refer to the chapter
entitled “Environmental Conditions”.
Provided the power and encoder cables are mounted properly
Fig. 8-1: Technical data MKD071B-024