BDS4 C
HAPTER
4 - M
AINTENANC
4-1
C
HAPTER 4
M
AINTENANCE
4.1 INTRODUCTION
The information in this chapter will enable you to
maintain the systems components ensuring smooth,
efficient operation of the motor. Adjustments to the
system are broken in three (3) categories: Set-Up,
Response and Application Dependent, and Design
Tolerance. These adjustments allow the user to tailor
the BDS4 to their specific applications.
4.2 PREVENTATIVE MAINTENANCE
CAUTION
Preventative maintenance to
this equipment must be
performed by qualified
personnel familiar with the
construction, operation, and
hazards involved with the
application.
CAUTION
Electronic components in this
amplifier are static sensitive.
Use proper procedures when
handling component boards.
Preventative maintenance should be performed with
the BDS4 system out of operation and disconnected
from all sources of power.
4.2.1 Transient Voltages
NOTE
All transient-producing
devices must be properly
suppressed.
Solid state controls of the BDS4 may be affected by
transient voltages. These voltages are in excess of the
specified voltage for any given circuit. When these
peak voltages occur, even for less than a second,
permanent damage to the BDS4 can occur.
In order to help avoid transient voltages that may
interfere with electronic circuit functions within the
PSR4/5 and BDS4, all switched inductive devices or
their wiring (solenoids, relay coils, starter coils, etc.)
must be suppressed. A 220 ohm, 1/2 watt resistor in
series with a 0.5 micro farad, 600 volt capacitor or
equivalent is suggested.
4.2.2 Surge Current
Excessive current greater than that of the specified
limits of the PSR4/5 and BDS4 can cause permanent
damage to the system. Current limiting means are
recommended to protect from these currents.
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