Kollmorgen
Maintenance
SILVER
LINE
®
Product Family
6-2
Preventative maintenance should be performed with the S/O system out of operation and disconnected from all
sources of power.
Preventative maintenance to
this equipment must be
performed by qualified
personnel familiar with the
construction, operation, and
hazards involved with the
application.
Always take equipment out of
operation and disconnect it
from all power sources before
performing maintenance.
6.3.1 Transient Voltages
All
transient-producing
devices must be properly
suppressed.
Solid state controls of the S/O may be affected by transient voltages. These voltages may exceed the specified
voltage for any given circuit. When these peak voltages occur, even for less than a second, permanent damage can
occur.
To help avoid transient voltages that may interfere with electronic circuit functions within the SPS/R and S/O, 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.
6.3.2 Electrical Noise
The low levels of energy in the S/O control circuits may cause them to be vulnerable to electrical noise. Sources of
electrical noise include equipment having large, fast changing voltages and currents when they switch on and off.
These devices have the capability of inducing current and voltage transients on their respective power lines.
Accommodation must be made for these transients using noise immunity provisions.
Electrical noise is prevented with the same methods as surge current and transient voltages. However, there are other
methods of preventing electrical noise, such as:
•
Maintain physical separation between electrical noise sources and the S/O amplifier.
•
Maintain physical separation between electrical noise sources and the S/O control wiring. This can be
accomplished by using separate conduits or wiring trays for control wiring and power wiring.
•
Follow good grounding practices when wiring the SPS/R and S/O. Be careful not to create a grounding loop
with multiple ground paths. Follow the NEC's provisions on grounding.
6.3.3 Radio Frequency Energy
This equipment is susceptible to, and can radiate, radio frequency energy. It must be installed and used in accordance
with this installation manual to prevent possible interference with radio communications or other electronic
equipment.
CAUTION
NOTE
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