Rockwell Automation LDC Iron Core Linear Servo Motors - Manual (Page 63)

Rockwell Automation Publication LDC-UM001B-EN-P - March 2011 63
Specifications and Dimensions Appendix A
Performance Specifications
Motor performance specifications are with sinusoidal commutation. Cooling
options include NC (no cooling), AC (air cooling), and WC (water cooling).
Table 8 - LDC-Series Iron Core Linear Motors (30 mm frame size)
Attribute Units Symbol LDC-C030100-DxTxx LDC-C030200-DxTxx LDC-C030200-ExTxx
NC AC WC NC AC WC NC AC WC
Force, continuous
(1) (2) (3)
N
(lbf) F
c
74
(17) 93
(21) 111
(25) 148
(33) 185
(42) 222
(50) 148
(33) 185
(42) 222
(50)
Force, peak
(4)
N
(lbf) F
p
188
(42) 375
(84)
Thermal resistance °C/W R
th
2.24 1.43 1.00 1.12 0.72 0.50 1.12 0.72 0.50
Force constant (5) (6) (7) N/A
pk
(lbf/A
pk
)
K
f
18.2
(4.1) 18.2
(4.1) 36.4
(8.2)
Back EMF constant p-p (5) (6) (7) V
p
/m/s
(V
p
/in/s)
K
e
21.5
(0.55) 21.5
(0.55) 43.0
(1.09)
Current, peak (4) (6) A
pk
(A
rms
)
I
p
12.1
(8.6) 24.3
(17.1) 12.1
(8.6)
Current, continuous (1) (2) (3) (6) A
pk
(A
rms
)
I
c
4.1
(2.88) 5.1
(3.6) 6.1
(4.3) 8.1
(5.8) 10.2
(7.2) 12.2
(8.6) 4.1
(2.9) 5.1
(3.6) 6.1
(4.3)
Resistance p-p @ 20 °C (68 °F) (5) (7) Ohms R
20
2.256 1.128 4.51
Inductance p-p (5) (7) mH L 21.6 10.8 43.0
Magnetic attraction (8) N
(lbf) F
a
393
(88) 786
(177)
(1) Coils at maximum temperature, 130 °C (266 °F), mounted to an aluminium heat sink whose area is noted in table on page 69 , and at 40 °C (104 °F) ambient.
(2) Continuous force and current based on coil moving with all phases sharing the same load in sinusoidal commutation.
(3) For standstill conditions, multiply continuous force and continuous current by 0.9.
(4) Calculated at 20% duty cycle for 1.0 second max. Some applications may produce significantly higher peak forces. Call Applications Engineering (631.344.6600) for details.
(5) Winding parameters listed are measured line-to-line (phase-to-phase).
(6) Currents and voltages listed are measured 0-peak of the sine wave unless noted as rms.
(7) Specifications are ±10%. Phase-to-phase inductance is ±30%.
(8) All specifications are at the standard reference air gap as shown in the drawing on
page 73 and page 75 .