Dukane ULTRASONIC GENERATOR/POWER SUPPLY 403-573-02 - Manual (Page 22)

Page 
iQ Series,
Auto User’s Manual
Dukane Manual Part No. 403-573-02
Power Grounding
For safety, the iQ Auto chassis must be properly ground-
ed. The power line ground connection is located on the
center screw terminal on the AC Power Inlet pluggable
screw terminal connector.
This system ground connection must be attached to an
earth ground potential at the electrical box that supplies
power to the enclosure or cabinet in which the iQ Auto
system is installed.
The ground connection should comply with all of the re-
quirements specified by the National Electrical code and
any other local codes or ordinances that are applicable.
Chassis Grounding Stud
Proper grounding for the generator chassis is essential for
the effective suppression of electrical noise or RFI (Ra-
dio Frequency Interference). Every ultrasonic generator
contains a RFI filter that blocks noise on the AC power
line from entering the system control circuitry. This filter
also prevents ultrasonic frequency noise from being fed
back into the AC power line. For the RFI filter to operate
effectively, it is necessary to correctly ground the system.
The power line ground previously mentioned is manda-
tory.
Additionally, the included grounding wire must be con-
nected from the grounding stud connection (see Figure 3-
1) to the nearest grounded metal pipe or equivalent earth
ground.
This will improve the chassis ground connection and may
be needed in noisy industrial environments.
CAUTION
To minimize electrical noise
and eliminate ground cur-
rents, ground the chassis as
shown. Use a STAR configu-
ration (shown below).Do not
DAISY CHAIN the grounds.
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Earth
Ground
#14 Gauge
Stranded or
Solid Wire
Fixed Probe Mount
or 2nd Chassis
Grounding Stud
3rd Chassis
Grounding
Stud
Chassis Grounding
Stud
Protective earth ground
connection wire color:
green or green with yellow
stripe.
NOTE
Chassis Grounding Stud
The chassis grounding stud is used to
attach a protective earth ground to the
generator. This helps suppress electrical
interference or radio frequency interfer-
ence (RFI) that is common in an industrial
environment. Stud location is shown in
Figure 3-1 on the following page.
CAUTION
If you have any questions
about the grounding of your
equipment and/or the electri-
cal box, contact a qualified
electrician.
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