REXROTH MKD025A-144, Manual

Page: 42 / 184

6-2
MKD025 Synchronous Motors MKD
19.05.2004 Version7.0 DOK-MOTOR*-MKD*******-PR07-EN-P
Description Symbol Unit MKD025B-058
Cooling mode – Natural Natural Surface
Motor overtemperature 60K 100K 60K /100K
Electric parameters
Characteristic motor speed n
K
min
-1
9000
Continous torque at standstill M
dN
Nm 0,9 (0,8) 1,0 (0,9) ---
Continous current at standstill I
dN
A 2,3 (2,0) 2,6 (2,3) ---
Peak current I
max
A 10,4
Torque constant at 20°C
1
) K
m
Nm/A 0,43
Voltage constant at 20°C K
E(eff)
V/1000min
-1
37,1
Winding resistance at 20°C R
12
Ω
10,3
Winding inductace L
12
mH 14,4
Number of pole pairs p 3
Rated data
2
)
Rated speed n
N
min
-1
5000 5000 ---
Rated torque M
N
Nm 0,52 0,7 ---
Rated current I
N
A 0,94 1,3 ---
Rated power P
N
kW 0,32 0,44 ---
Rated voltage U
N
V 196 200 ---
Rated frequency f
N
Hz 250 250 ---
Mechanical parameters
Rotor inertia J
M
kgm² 0,3 x 10
-4
Theoretical maximum torque M
max
Nm 4,0
Minimum strand cross-sectíon
4
) S mm
2
1,0 1,0 ---
Thermal time constant T
th
min 15 15 ---
Maximum speed n
max
min
-1
9000
Motor mass
3
)
5
) m kg 1,5
Perm. storage and transport temp. T
L
°C -20 to +80
Permissible ambient temperature
6
) T
um
°C 0 to40
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
)
8
)
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.
Without 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
Use the declared value in bracket for motors with encoder type "K".
Fig. 6-2: Technical Data MKD025B-058