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SMI - SmartMotor Interface
for Windows

SmartMotor™
Product Line
Comparison Chart

 DESCRIPTION

 UNITS

 SM1720D85C 

  Power

Input

VDC

20 - 48 (max)

 Environment

Operating Temperature

°F (°C)

32 to 185 (0 to 85)

Enclosure Rating (approximate)

IP30

Storage Temperature

°F (°C)

-4 to 185 (-20 to 85)

Vibration (peak/continuous)

G

NA/NA

Humidity (non-condensing)

%

0 to 80

 Performance

Peak Torque (Tp)

oz-in (N-m)

86 (0.60)

Continuous Torque (Tc)

oz-in (N-m)

32 (0.22)

No Load Speed

RPM

7300

Nominal Power

HP (kW)

0.15 (0.11)

Servo Update

Hz

4069

PWM Frequency

kHz

33.3

Encoder

Type

Incremental

VDC

Resolution

ppr (post-quad)

2000

Memory

Volatile

kRAM

32

Non-volatile

kRAM

32

 Motor

Commutation

6-step Trapezoidal

Voltage Constant (Kv)

V/kRPM

5.50

Torque Constant (Kt)

oz-in/Amp(N-m/Amp)

7.6 (0.05)

Rotor Inertia (Jm)

oz-in-s2(10-5kg-m2)

0.00026 (0.18)

Insulation

Class B

Number of Poles (Np)

4

Winding Resistance (R)

Ohms

1.8

 Input/
 Output

Type

7(5VDC TTL)

Input

Digital

+5V TTL sinking input

Analog

sinking input, 10 bit

Output

Sourcing

mA

5

Sinking

mA

10

Encoder/Step

Input Freq.

MHz

1

 Communi-
 cations

Primary

Type

RS232; Serial (ASCII)

Speed

KBaud

2.4 to 38.4

Secondary

Type

RS485; Serial (ASCII)

 Physical

Radial Load

lbs (kg)

7 (3.18)

Axial Thrust Load

lbs (kg)

3 (1.36)

Width

in (mm)

1.65 (41.9)

Length

in (mm)

3.7 (94)

Weight (Wt)

lbs (kg)

1.2 (0.55)

Shaft Diameter**

in (mm)

0.197 (5)

Pilot Diameter**

in (mm)

0.865 (22)

Bolt Circle Diameter

in (mm)

1.725 (43.8)

* Performance spec based on PS42V20A-OF

Notes:
*  tested at RMS acceleration for 20 minutes
** check tolerance in drawings