Desco 的 5066x,5067x 规格书

TB-6534 Page 1 of 9 © 2019 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website: Desco.com
Overhead Zero Volt Ionizer
Installation, Operation and Maintenance
Description
The EMIT Overhead Zero Volt Ionizer (ZVI) is a
steady-state DC auto-balancing ionizer with integrated
closed-loop feedback. It combines the effectiveness
of steady-state DC ionization with ease of adjustability,
communication capability and the flexibility of a
microcontroller-based design to produce a versatile and
stable ionization system. Its fans produce extended
ionization coverage and are ideal for areas where bench
space is limited.
The Overhead Zero Volt Ionizer uses steady-state
DC ionization. Steady State DC systems consist of
separate negative and positive ion emitters connected
by a pair of high-voltage cables to their respective
high-voltage power supplies. The spacing between
emitters varies depending on the design, and DC
power is constantly applied to the emitter points. The
ionizer utilizes feedback from the internal sensor grill to
continuously adjust the output to maintain balance.
“Necessary non-conductors in the environment cannot
lose their electrostatic charge by attachment to ground.
Ionization systems provide neutralization of charges on
these necessary non-conductive items (circuit board
materials and some device packages are examples of
May 2019
necessary non-conductors). Assessment of the ESD
hazard created by electrostatic charges on the
necessary nonconductors in the work place is required
to ensure that appropriate actions are implemented,
commensurate with risk to ESDS [ESD sensitive] items”.
(ANSI/ESD S20.20 Foreword)
“In order to mitigate field-induced CDM [Charged Device
Model] damage, the ESD program shall include a plan
for the handling of process-required insulators. If the
field exceeds 2,000 volts/inch, steps shall be taken to
either: A) Separate the insulator from the ESD-sensitive
device by a distance of 30 cm (12 inches); or B) Use
ionization or other charge mitigating techniques to
neutralize the charge.” (ANSI/ESD S20.20 section 8.3)
“The primary method of static charge control is direct
connection to ground for conductors, static dissipative
materials, and personnel. A complete static control
program must also deal with isolated conductors that
cannot be grounded, insulating materials (e.g., most
common plastics), and moving personnel who cannot
use wrist or heel straps or ESD control flooring and
footwear.
Air ionization is not a replacement for grounding
methods. It is one component of a complete static
control program. Ionizers are used when it is not
possible to properly ground everything and as backup
to other static control methods. In clean rooms, air
ionization may be one of the few methods of static
control available.” (ESD Handbook ESD TR20.20
Ionization, section 5.3.6.1)
“All ionization devices will require periodic maintenance
for proper operation. Maintenance intervals for ionizers
vary widely depending on the type of ionization
equipment and use environment. Critical clean room
uses will generally require more frequent attention. It
is important to set up a routine schedule for ionizer
service. Routine service is typically required to meet
quality audit requirements.” (ESD Handbook ESD
TR20.20 section 5.3.6.7 Maintenance / Cleaning)
The Overhead Zero Volt Ionizer is available in four
models:
Item
Fans
Voltage
Power Cord
50664 2 120 VAC North America
50665 3 120 VAC North America
50671 2 220 VAC None
50672 3 220 VAC None
TECHNICAL BULLETIN TB-6534
Figure 1. EMIT Overhead Zero Volt Ionizer, 2-Fan
Figure 2. EMIT Overhead Zero Volt Ionizer, 3-Fan
Made in the
United States of America
13-6534
TB-6534 Page 2 of 9 © 2019 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website: Desco.com
Packaging
1 Overhead Zero Volt Ionizer
1 Power Cord, North American Plug (50664, 50665)
2 Emitter Point Cleaner Pack (50664, 50671)
3 Emitter Point Cleaner Pack (50665, 50672)
1 Hanging Kit
2 Keys
1 Certificate of Calibration
Features and Components
F. LED Display: Displays the ionizer address, balance,
fan speed and maintenance codes.
G. Control Buttons: Use the buttons to modify the
ionizer’s settings.
Installation
Use the included hanging kit to install the unit at a
desired location where the airflow will not be restricted.
Verify that the key switch is set to the OFF (0) position.
Plug the power cord into the unit and then into the
appropriate AC power source.
Operation
1. Use the included keys to set the ionizer’s key switch
to the ON (I) position. The ionizer will conduct a
self-test. The audible alarm will sound, and the LED
display will turn on. The default address is “000”.
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B C D E
Figure 3. Overhead Zero Volt Ionizer left side view
Fan #1 Fan #2 Fan #3
F
G
Figure 4. Overhead Zero Volt Ionizer front side view
2. Press the ◄ and ► buttons
simultaneously to enter Setup Mode.
The ionizer will beep once and “Prog”
will momentarily appear on the display.
The display will then show the fan
speed setting.
3. Press the ▼ or ▲ button to adjust
the fan speed from “Spd1” (lowest) to
“Spd9” (fastest). Higher airflow will
result in faster neutralization rates.
Press the ► button to proceed to the
balance adjustment settings.
4. Use a charged plate analyzer to monitor
the balance of each fan. Place it
under fan #1 and press the ▼ button
to increase the negative output and ▲
button to increase the positive output.
Press the ► button to proceed to fan
#2.
5. Move the charged plate analyzer
underneath fan #2. Press the ▼ button
to increase the negative output and ▲
button to increase the positive output.
Press the ► button to proceed to fan
#3.
6. Move the charged plate analyzer
underneath fan #3. Press the ▼ button
to increase the negative output and ▲
button to increase the positive output.
Press the ► button to proceed to alarm
threshold settings.
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A. Mounting Bracket: Attach the included hanging kit
to these brackets to install the ionizer.
B. Power Cord Inlet: Connect the power cord here to
provide power to the ionizer.
C. Key Switch: Use the included keys to turn the
ionizer ON or OFF.
D. RS-485 OUT: For manufacturer use only.
E. RS-485 IN: For manufacturer use only.
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TB—6534
TB-6534 Page 3 of 9 © 2019 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website: Desco.com
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7. The alarm threshold controls the
sensitivity of the alarm circuit in the
ionizer. Press the ▼ or ▲ button to
adjust the sensitivity from from “AL 5”
(highest) to “AL25” (lowest). “ALno”
turns disables the alarm. Press the ►
button to proceed to save your settings
and exit Setup Mode.
8. “SAVE” will momentarily appear on the
display to confirm that all settings have
been saved to the ionizer. “On b” will
then briefly appear to indicate that the
buttons are enabled. The ionizer will
then display its address during normal
operation. Simultaneously press the ◄
and ► buttons at any time during Setup
Mode to save and exit the settings
menu.
ALARM CONDITIONS
The Overhead Zero Volt Ionizer is able to detect various
problems that may occur through normal use. The
ionizer will alarm when the input voltage is too high or
low. It will also alarm should failure occur with one of
its high voltage power modules. The buzzer sounds
continuously during all alarm conditions.
Input voltage is too low
Input voltage is too high
High voltage module or sensor failure. The
number represents the fan number that was
shut down.
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Maintenance
“All ionization devices will require periodic maintenance
for proper operation. Maintenance intervals for ionizers
vary widely depending on the type of ionization
equipment and use environment. Critical clean room
uses will generally require more frequent attention. It
is important to set up a routine schedule for ionizer
service. Routine service is typically required to meet
quality audit requirements.” (ESD Handbook TR20.20
section 5.3.6.7 Maintenance / Cleaning)
EIA-625, recommends checking ionizers every 6
months, but this may not be suitable for many programs
particularly since an out-of-balance may exist for months
before it is checked again. ANSI/ESD S20.20 section
6.1.3.1 Compliance Verification Plan Requirement
states: “Test equipment shall be selected to make
measurements of appropriate properties of the technical
requirements that are incorporated into the ESD
program plan.”
CLEANING THE EMITTER POINTS
Under normal conditions, the ionizer will attract dirt and
dust (especially on the emitter points). To maintain
optimum neutralization efficiency and operation,
cleaning should be performed on a regular basis.
The emitter points should be cleaned using the included
Emitter Point Cleaners or a swab dampened with
Isopropyl alcohol.
1. Turn the unit OFF and
unplug the power cord.
2. Open the top screen
by loosening the screw
and swinging the grill to
one side.
3. Clean the emitter points
using the included
Emitter Point Cleaners
or a swab dampened
with Isopropyl alcohol.
4. Reattach the top
screen.
5. Plug in the power cord
and turn the unit ON.
6. Verify the performance
of the ionizer by
using a charged plate
monitor, or ionization
test kit.
With normal handling, the emitter points should not
require replacement during the life of the unit with
normal handling. If necessary, item 60507 Replacement
Emitter Points are available for purchase.
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TB-6534
TB-6534 Page 4 of 9 © 2019 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website: Desco.com
BALANCE OFFSET VOLTAGE ADJUSTMENT
The Overhead Zero Volt Ionizer is an auto-balancing
unit. However, tuning or manual adjustment can be
accomplished by using the ionizer’s control buttons.
See “Operation” for more information.
INPUT VOLTAGE CONFIGURATION
WARNING - Risk of electric shock
These servicing instructions are for use by qualified
personnel only. Do not perform any servicing of
internal parts unless you are qualified to do so.
NOTE: The AC power cord MUST always be
disconnected before the unit is disassembled.
The input voltage may be verified or reset by opening
the ionizer’s enclosure. This can be accomplished by
removing the 10 screws that secure the cover to the
base.
The input voltage can be selected using the two internal
jumpers shown in Figures 5 and 6.
Figure 5. 110V jumper
setting
Figure 6. 220V jumper
setting
If the supply voltage drops from 110 Volts to below 85
Volts or from 200 Volts to below 170 Volts, the unit will
alarm and display “AC L”. The unit will automatically
reset when the minimum voltage is restored.
Calibration
Auto-balancing closed-loop feedback technology can
save money and extend the maintenance interval of
the ionizer. What the sensor detects is that the offset
voltage (balance) has shifted and the circuits will
attempt to compensate. In the case of corona ionizers,
one of the reasons for a shift in offset voltage is
frequently the particle buildup, commonly called a “fuzz
ball”, observed on the emitter points.
Compliance Verification should be per ESD TR53.
Offset voltage (balance) and both polarity’s discharge
time should be checked on every ionizer periodically
using an Ionization Test Kit or a Charged Plate
Analyzer. Measure offset voltage (balance) and both
polarity’s discharge times. Clean the emitter points
(with electrical power off), adjust offset voltage (balance)
to zero and then re-test for offset voltage (balance) and
discharge times recording the measurements.
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TB-6534 Page 5 of 9 © 2019 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website: Desco.com
Neutralization (Discharge) Times
All data was taken with the fan speed set to high. All time measurements are in seconds. The distance between
the overhead ionizer and charged plate is 18” per ANSI/ESD STM 3.1.
NOTE: Discharge times in seconds are representative only and are not a guarantee. Discharge times are actual
measurements recorded in a factory ambient environment.
Per ANSI/ESD S20.20, the test method for Product Qualification test is ANSI/ESD STM3.1, and for Compliance
Verification is ESD TR53 which advises “Measurements should be made at the location where ESD sensitive items
are to be ionized.” A larger area may require additional ionizers. Per S20.20 the required limit for ionizer discharge
time is user defined. Use Table to determine the number of ionizers to achieve ionization of area to be neutralized
to meet your company’s ESD control plan specified discharge times.
TP1
12.5 (+)
16.0 (-)
16" 16"
12"
12"
Charged Plate
16"
Figure 7. 50664 Neutralization (Discharge) Times at 100VAC, 50Hz input
TP4
4.3 (+)
5.7 (-)
TP7
4.2 (+)
5.3 (-)
TP10
14.5 (+)
19.0 (-)
TP2
9.0 (+)
12.2 (-)
TP5
1.7 (+)
2.3 (-)
TP8
2.3 (+)
3.5 (-)
TP11
7.0 (+)
10.0 (-)
TP3
13.0 (+)
21.0 (-)
TP6
4.2 (+)
5.5 (-)
TP9
4.0 (+)
5.2 (-)
TP12
12.0 (+)
22.0 (-)
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TB-6534 Page 6 of 9 © 2019 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website: Desco.com
TP1
9.7 (+)
12.5 (-)
16" 16"
12"
12"
Charged Plate
16"
Figure 9. 50665 Neutralization (Discharge) Times at 100VAC, 50Hz input
TP4
3.8 (+)
4.2 (-)
TP7
3.1 (+)
4.0 (-)
TP10
9.4 (+)
12.4 (-)
TP2
3.5 (+)
4.6 (-)
TP5
2.5 (+)
3.7 (-)
TP8
2.0 (+)
3.1 (-)
TP11
3.8 (+)
4.8 (-)
TP3
8.0 (+)
10.5 (-)
TP6
3.3 (+)
4.6 (-)
TP9
3.8 (+)
4.9 (-)
TP12
6.9 (+)
10.2 (-)
TP1
10.0 (+)
12.0 (-)
16" 16"
12"
12"
Charged Plate
16"
Figure 8. 50664 Neutralization (Discharge) Times at 120VAC, 60Hz input
TP4
4.0 (+)
5.0 (-)
TP7
4.0 (+)
5.0 (-)
TP10
11.0 (+)
17.5 (-)
TP2
7.5 (+)
10.0 (-)
TP5
1.5 (+)
2.0 (-)
TP8
2.0 (+)
2.5 (-)
TP11
6.5 (+)
9.5 (-)
TP3
11.5 (+)
19.0 (-)
TP6
4.0 (+)
5.0 (-)
TP9
4.0 (+)
5.0 (-)
TP12
12.0 (+)
19.5 (-)
ggéagéax
TB-6534 Page 7 of 9 © 2019 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website: Desco.com
TP1
8.9 (+)
11.8 (-)
16" 16"
12"
12"
Charged Plate
16"
Figure 11. 50671 Neutralization (Discharge) Times at 220VAC, 50Hz input
TP4
3.2 (+)
3.5 (-)
TP7
2.2 (+)
3.2 (-)
TP10
12.3 (+)
14.9 (-)
TP2
8.1 (+)
9.2 (-)
TP5
1.6 (+)
2.1 (-)
TP8
1.3 (+)
-1.8
TP11
10.3 (+)
14.4 (-)
TP3
10.7 (+)
11.3 (-)
TP6
3.1 (+)
3.6 (-)
TP9
3.1 (+)
4.3 (-)
TP12
10.8 (+)
12.8 (-)
TP1
8.5 (+)
11.3 (-)
16" 16"
12"
12"
Charged Plate
16"
Figure 10. 50665 Neutralization (Discharge) Times at 120VAC, 60Hz input
TP4
3.2 (+)
4.6 (-)
TP7
2.7 (+)
3.9 (-)
TP10
7.9 (+)
11.0 (-)
TP2
3.0 (+)
4.0 (-)
TP5
2.0 (+)
2.6 (-)
TP8
1.8 (+)
2.8 (-)
TP11
3.4 (+)
4.4 (-)
TP3
6.7 (+)
8.2 (-)
TP6
3.1 (+)
4.1 (-)
TP9
3.0 (+)
3.6 (-)
TP12
6.1 (+)
9.0 (-)
IIIIIIII %$&&x
TB-6534 Page 8 of 9 © 2019 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website: Desco.com
TP1
10.1 (+)
10.8 (-)
16" 16"
12"
12"
Charged Plate
16"
Figure 12. 50672 Neutralization (Discharge) Times at 220VAC, 50Hz input
TP4
3.2 (+)
3.4 (-)
TP7
2.7 (+)
3.0 (-)
TP10
7.5 (+)
8.4 (-)
TP2
3.1 (+)
3.2 (-)
TP5
2.0 (+)
2.1 (-)
TP8
1.9 (+)
2.0 (-)
TP11
3.4 (+)
4.2 (-)
TP3
5.2 (+)
5.4 (-)
TP6
2.4 (+)
2.6 (-)
TP9
2.6 (+)
3.0 (-)
TP12
6.7 (+)
7.5 (-)
TIE-6534
TB-6534 Page 9 of 9 © 2019 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website: Desco.com
Specifications
The comparative efficiency of overhead ionizers is
determined by a standard test published by the ESD
Association: ANSI/ESD STM 3.1. Typical positive and
negative discharge times (1000V - 100V) measured
using this standard are shown in the “Neutralization
(Discharge) Times” section. The performance of the
ionizer was measured with the unit positioned as shown,
with the fan speed on high and without a filter.
Airflow
(50664, 50671)
9-speed fan
130 to 200 CFM
Airflow
(50665, 50672)
9-speed fan
195 to 300 CFM
Balance (Offset
Voltage)
±3V typical
±5V maximum
(65 to 80°F, 15 to 65% RH)
Chassis Stainless Steel
Dimensions
(50664, 50671)
3.9" H x 6.6" W x 27.3" L
(9.9 cm x 16.8 cm x 69.3 cm)
Dimensions
(50665, 50672)
3.9" H x 6.6" W x 42.3" L
(9.9 cm x 16.8 cm x 107.4 cm)
Emitter Points 0.05" diameter, pure tungsten
Fuse 400 mA slow blow
High Voltage Power
Supply
5.5 kVDC nominal
Input Power AC line power
Ion Emission Steady-state DC with sense
feedback
Mounting May be rigid-mounted or
suspended from ceiling
Ozone <0.05 ppm
Weight
(50664, 50671)
7 lbs. (3.2 kg)
Weight
(50665, 50672)
10 lbs. (4.5 kg)
Country of Origin United States of America
Limited Warranty, Warranty Exclusions, Limit
of Liability and RMA Request Instructions
See the Desco Warranty -
Desco.com/Limited-Warranty.aspx