Chapter 1. Installation
35
Size 42 Frame, T Series
Motor Temperature & Cooling
The motor’s face flange is used not only for mounting; it is also a heatsink. Mount the face flange to a large thermal mass,
such as a thick steel plate. This is the best way to cool the motor. Heat will be conducted from inside the motor, through the
face flange, and dissipated in the thermal mass. You can also use a fan to blow air across the motor for increased cooling, if
you do not get enough cooling by conduction through the face flange.
In addition, the ZETA6xxx has an automatic standby current feature that reduces motor current by 50% if no step pulses
have been commanded for a period of 1 second or more. (WARNING: torque is also reduced.) Full current is restored
upon the first step pulse. To enable this feature, change DIP switch SW2-1 (see page 8) to the ON position (enabled)
(default is disabled, OFF).
Coupling the Motor
To ensure maximum performance, align the motor shaft and load as accurately as possible (although some
misalignment may be unavoidable. The type of misalignment will affect your choice of coupler.
Single-Flex Coupling: Use for angular misalignment only. One (only) one of the shafts must be free to
move in the radial direction without constraint. Do not use a single-flex coupling with parallel
misalignment—this will bend the shafts, causing excessive bearing loads and premature failure.
Double-Flex Coupling: Use whenever two shafts are joined with parallel misalignment, or a combination of angular and parallel
misalignment. Single-flex and double-flex couplings may or may not accept end pla, depending on their design.
Rigid Coupling: Not recommended, because they cannot compensate for any misalignment. Use only if the motor or load is on some
form of floating mounts that allow for alignment compensation. Rigid couplings can also be used when the load is supported entirely by
the motor’s bearings. A small mirror connected to a motor shaft is an example of such an application.
Coupling Manufacturers:
HUCO, 70 Mitchell Blvd, Suite 201, San Rafael, CA 94903, (415) 492-0278
ROCOM CORP., 5957 Engineer Drive, Huntington Beach, CA 92649, (714) 891-9922
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com