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Page 18
iQ Series, Ultrasonic Generator/Power Supply LS User’s Manual
Dukane Manual Part No. 403-574-01
RFI Grounding
In addition to the safety considerations previously men-
tioned, proper grounding at the generator power cord is
essential for the effective suppression of electrical noise
or RFI (Radio Frequency Interference). Every ultrason-
ic generator contains a RFI lter which blocks noise on
the AC power line from entering the system control cir-
cuitry. This lter also prevents ultrasonic frequency noise
from being fed back into the AC power line. In order for
the RFI lter to operate properly, it is necessary to cor-
rectly ground the system. Run a grounding wire from the
grounding stud connection to the nearest grounded met-
al pipe or equivalent earth ground, and secure it with a
ground clamp.
See Figure 3-6 on Page 20.
CAUTION
To minimize elect ri -
cal noise and eliminate
ground currents, ground
the chassis as shown. Use
a STAR conguration (il-
lustrated below). Do not
DAISY CHAIN the grounds.
Earth
Ground
#14 Gauge
Stranded or
Solid Wire
Fixed Probe Mount
or 2nd Chassis
Grounding Stud
3rd Chassis
Grounding
Stud
Chassis Grounding
Stud
Recommended protective
earth ground connection
wire color: green or green
with yellow stripe.
Continent of Use Power Cord
Part Number
Power
North America
200 - 1110 240V, 15A
200 - 1541 240V, 10A
Continental Europe
200 - 1111 240V, 16A
200 - 1542 240V, 10A