98
APEX615n Installation Guide
SM Motor Specifications
Parameter Symbol Units SM231AR SM232AR SM233BR
Stall Torque Continuous
1
T
cs
lb.in.
oz. in.
Nm
3.5
56
0.40
6.7
107
0.76
10.2
163
1.15
Stall Current Continuous
1
I
cs
amperes - rms 2.0 2.0 3.9
Rated Speed w
r
rpm
rps
7500
125
4250
71
6000
100
Peak Torque
1, 6
T
pk
lb.in.
oz. in.
Nm
17.5
280
1.98
33.4
535
3.78
50.9
815
5.76
Peak Current, rms
1
I
pk
amperes 10 10 19.5
Torque @ Rated Speed
1
T
c
lb.in.
oz. in.
Nm
2.8
46
0.32
6.0
96
0.68
9.0
145
1.02
Rated Power -- Output Shaft
1
Po watts
hp
250
0.34
302
0.40
643
0.86
Voltage Constant
3,4,
K
b
volts/radian/sec 0.161 0.310 0.242
Voltage Constant
3,4,
K
e
volts/KRPM 16.86 32.45 25.33
Torque Constant
3,4, 7
K
t
oz. in./ amp rms
Nm/amp rms
27.82
0.20
53.54
0.38
41.76
0.29
Resistance
1,3
R ohms 5.22 7.5 2.58
Inductance
5
L millihenries 1.64 2.9 1.06
Thermal Resistance
1
R
th
°C/watt 2.23 1.58 1.26
Motor Constant Km oz.in./÷watt
Nm/÷watt
9.58
0.07
15.99
0.11
21.25
0.15
Viscous Damping B oz. in./Krpm
Nm/Krpm
1.24
8.76 x 10
-3
2.07
14.76 x 10
-3
2.86
20.20 x 10
-3
Torque - Static Friction T
f
oz. in.
Nm
1.2
8.47 x 10
-3
2.0
14.10 x 10
-3
2.25
15.90 x 10
-3
Thermal Time Constant t
th
minutes 30 35 40
Electrical Time Constant t
e
milliseconds 0.31 0.39 0.41
Mechanical Time Constant t
m
milliseconds 13.7 8.6 7.0
Rotor Inertia J
lb.in.sec
2
kgm
2
∗1E-6
0.00048
54.23
0.00084
94.91
0.00119
134.50
Weight # pounds
kg
2.6
1.18
3.5
1.59
4.4
2.00
Winding Class H H H
1
@ 25°C ambient w/ 10x10x0.25 inch mounting plate, 150°∞C winding temperature
For 40°C ambient operation, reduce values by 12%.
3
± 10%, line-to-line
4
peak value
5
± 30%, line-to-line, inductance bridge measurement method @ 1kHz
6
Peak current for 1 sec with initial winding temperature of 60°C or less.
7
Effective torque constant when applied with a sinusoidal amplifier.
All specifications are subject to engineering change
APEX and SM Resolver Specifications
Parameter Value
Input voltage @ 7000 Hz 4.25 volts
Input current, max. 55 ma
Input power, nominal 0.12 watts
Impedance ZSO (@90∞) 58 +j145 ohms
Impedance ZRO 53 +j72 ohms
Impedance ZRS 42 +j55 ohms
Transformation ratio 0.470 ±5%
Output voltage 2.0 ±5% volts
D.C. rotor resistance 23 ±10% ohms
D.C. stator resistance 19 ±10% ohms
Sensitivity 35 mV/Degree
Max. Error from EZ ±10 minutes
Phase shift, open circuit 5∞ leading ±3”
Null voltage (total) 20 mV rms
Impedance ZSS 50 +j128 ohms
Inertia included in motor specification
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