Programming instructions

Misc. Components
Multisim Component Reference Guide 13-4 ni.com
13.2.2 DC Motor Parameters and Defaults
13.3 Optocoupler
An optocoupler is a device that uses light to couple a signal from its input (a photoemitter) to
its output (a photodetector).
A typical optocoupler can be found in a six-pin dual in-line package (DIP) containing both an
LED and a photodetector, and a transistor Darlington pair or SCR. The wavelength response
of each device is structured to be as identical as possible to permit the highest measure of
coupling possible.
Symbol Parameter Name Default Unit
Ra Armature resistance 1.1 Ω
La Armature inductance 0.001 H
Rf Field resistance 128 Ω
Lf Field inductance 0.001 H
Bf Shaft friction 0.01 N
m
*
s/rad
J Machine rotational inertia 0.01 N
*
m
*
s
2
/rad
nn Rated rotational speed 1800 RPM
Van Rated armature voltage 115 V
Ian Rated armature current 8.8 A
Vfn Rated field voltage 115 V
Tl Load torque 0.0 N
*
m
ComponentRef.book Page 4 Thursday, December 7, 2006 10:12 AM