H2W Technologies LCAM 5/15 Operation & Service Manual - Application Note
H2W Technologies, Inc., 26470 Ruether Ave. #102, Santa Clarita, CA 91350, U.S.A. (888) 702-0540
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APPLICATION NOTE
POWER DISSIPATION CONSIDERATIONS AND CALCULATIONS WHEN USING
LINEAR DC SERVO AMPLIFIERS:
When selecting a linear amplifier, the following ratings of the amplifier should be known in order to
properly size the amplifier to your system requirements:
1– The total wattage, peak current, and voltage rating of all the semiconductors installed on the
heat sink of the output power stage of the amplifier.
Output transistor ratings for the LCAM 5/15 series are:
Voltage: 250 Volts
Peak current: 60 A; Continuous current: 30 A (Normally shipped with 12-20A limit)
Total wattage @25 deg C.:1200 Watts
The LCAM 5/15 series amplifier is a module style amplifier requiring an external unregulated sin-
gle polarity DC power supply. H2W Technologies offers various unregulated power supplies for
the LCAM 5/15 series amplifiers.
The LCAM 5/15series amplifier is also available in multi-axis configurations. That is, there are
two basic baseplate assemblies namely 2-axis and 4-axis baseplate assemblies that have built-in
AC to DC power supplies (un-regulated) and cooling fans. The 2-axis baseplate assembly con-
tains one AC to DC power supply, one fan, and up to two LCAM 5/15 amplifier modules. The 4-
axis baseplate assembly contains one AC to DC power supply, two fan, and up to four LCAM 5/15
amplifier modules. For multi-axis applications, it is always recommended to use three phases
power transformers for minimizing ripple voltage during high current demand scenarios where all
axis motors are running at full load simultaneously. H2W Technologies offers various isolated
three phases power transformers.
2– Typical continuous internal rating of the amplifiers running at normal room conditions is:
LCAM 5/15 series; 250 Watts continuous
For most applications, the above heat sinking is adequate. However, if you have a usage mode
where the heat sink temperature becomes excessive, please contact H2W Technologies and we
can furnish a larger heat sink with greater air flow for your application.