Exlar Tritex, Руководство по установке

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Tritex 1 Installation and Setup
40
09/27/12
PN: 27666 Exlar Corporation
Rev. M 952-500-6200M
Regulated vs Unregulated Power Supplies
Either regulated or unregulated power supplies can be used for the bus and logic power,
however, in many cases the unregulated supplies are better suited for drive applications.
The over current and over voltage protection usually provided with a regulated supply can cause
the power supply to momentarily shut off and then recover during normal acceleration and
deceleration of the load. Declaration or lowering of a load can easily cause a regulated supply to
go into over voltage protection mode and shut down or be permanently damaged. If a regulated
supply is used a diode must be added to prevent motor and load energy from being generated
onto the power supply during deceleration, see diagrams next page.
Unregulated supplies have the advantage of being able to supply peak currents without
overloading and will not trip on high voltage. Unregulated supplies have a larger capacitance at
the output, especially when compared to switching regulated supplies, providing greater energy
absorption during deceleration of the load. For installations that require even more energy to be
absorbed such as lowering of a load or applications that back drive the actuator, a shunt
regulator must be used.
During deceleration of the load the energy generated from the motor and the
load will increase the bus voltage and could possibly damage the output of a
regulated power supply. If a regulated power supply is used for bus power, a
blocking diode should be installed to protect the power supply. See Power
Supply Wiring Diagrams section below
CAUTION