Meech 977v3 User manual

Model 977v3
Operating
Manual
Pulsed DC
Controller

Products shown in this document may be covered by one or more patents, patents applied for
and/or registered designs and/or trade marks. For further information please refer to our Head
O󰀩ce or visit www.meech.com.
© Meech Static Eliminators Ltd., 02.08.17
Contents
Introduction 3
Unpacking and Inspection 4
How to use your 977v3 Controller 5
Control Adjustments 6
Alarm 7
LED Displays 7
Meech Pulsed DC Applications 8
Distance from Object 8
Polarity 8
Cleaning Instructions 9
Fault Finding 10
Repairs and Warranty 12
Technical Specication 13
CE Approval 14
Health and Safety 14

3
Introduction
The Meech Model 977v3 controller has been designed to power any of the Meech 900
Series range of DC products.

4
Unpacking and Inspection
The Model 977v3 controller was carefully packed at the factory in a container
designed to protect it from accidental damage. Nevertheless, we recommend careful
examination of the carton and contents for any damage. If damage is evident, do not
destroy the carton or packing material and immediately notify the carrier of a possible
damage claim. Shipping claims must be made by the consignee to the delivering
carrier.

5
How to Use Your 977v3 Controller
Model 977v3
1. Locate the 977v3 Controller in a convenient position near to the ionising product
to be powered from it.
2. Following the polarity indicators connect the grey HV plugs of the ionising product
into the grey HV output sockets of the 977v3 Controller.
3. Connect the mains input supply to the Controller and switch ON.
THIS APPLIANCE MUST BE GROUNDED/EARTHED THROUGH THE MAINS
ELECTRICAL SUPPLY.
4. The attached ioniser will now produce Pulsed DC ionisation from its emitter pins.
For Best Results
1. Keep target area clear and free from obstructions to ion ow.
2. Keep work area clear of all static generative materials.
3. Only use approved static control grounding methods and material
handling equipment.

6
Control Adjustments
There are three adjustments that can be made on the Power Supply; BALANCE,
RATE and POWER.
The BALANCE of positive and negative ion output can be adjusted to increase polarity
bias by simply turning the balance control towards either positive (right) or negative
(left).
When set to maximum +VE or -VE the split is 20/80 - ie at maximum positive 80% of
the ions are positive and 20% of the ions are negative (or vice versa).
The RATE of pulse frequency can be adjusted from 0.5 Hz to 20Hz. The lower the
frequency (RATE) the greater the range (ie distance over which the ionisation will
travel). A setting of 5 to 10Hz is recommended for most applications.
The POWER or output voltage of the unit may also be adjusted by turning the power
control knob. The output voltage may vary from a minimum of 4kV to a maximum of
8kV.
The purpose of these adjustments is to give total versatility to the positioning of the
ionising product attached to it.
Remember it is important to verify calibration after any adjustments and before using
your ioniser around sensitive electronics.

7
Alarm
The alarm feature detects faults in the operation of the ionising system, e.g. problems
caused by lack of product cleanliness. When a fault has been detected the alarm LED
will illuminate and the high voltage to the emitters will be automatically switched o󰀨. If
a single occurrence of a fault occurs, the controller will switch o󰀨 the HV for 1 second
and then automatically reset. However, if the unit detects 5 faults in 5 seconds the HV
will be permanently switched o󰀨. The fault must be removed (e.g. by cleaning of the
ionising product) and the controller reset by switching the mains supply to it OFF and
ON.
An 8 way DIN socket is provided to mirror the alarm function to a central control panel
- see specication for connection detail.
LED Displays
The 977v3 has four indicator lights
1. Power light (Red) - Illuminated when mains supply
is provided to the unit.
2. Alarm light (Yellow) - Illuminated when unit has detected a fault
and has shut down.
3. Positive balance light (Red) - indicates positive voltage and pulse rate
4. Negative balance light ( green) - indicates negative voltage and pulse rate

8
Meech Pulsed DC Applications
Distance From Object
Originally Pulsed DC technology was developed for the electronics industry. Bars were
placed in laminar ow cabinets or above test benches. The distance from the object
was typically 1m.
For industrial applications the distance from the object is less - typically 150mm to
300mm. The rule for setting the frequency is that the closer the bar is to the object,
the faster the frequency setting.
Polarity
The polarity adjustment allows the output of the unit to be custom tuned to attack the
actual problem. If the charge is always strongly negative it makes sense to bias the
output towards a positive polarity, thus achieving faster neutralisation.
This requires a more sophisticated approach from the user. A Meech Model 983 Static
Locator becomes indispensable.
If the charge varies the output should be balanced in polarity.

9
Cleaning Instructions
Your Meech Pulsed DC Controller was designed to be virtually maintenance free.
1. Be sure the unit is switched o󰀨 and disconnected from the mains supply.
2. The outside case may be wiped down with a soft damp cloth.
3. Let dry for a minute and turn back on.

10
Fault Finding
Tests must be completed by a qualied electrical engineer.
If in doubt contact Meech head o󰀩ce or your local distributor.
CAUTION: Whilst no danger to personnel exists, it is essential than any high
voltage ionising equipment, (exception Meech Model 910 Water Resistant
Ionising Bars), makes no contact with water or water based uids.
Should such an event occur, disconnect immediately and return equipment to the
manufacturer for water damage assessment. High voltage electrical equipment should
not make contact with water.
The Model 977v3 Power Supply and Ionising Bar form part of a system.
To verify where a fault may have occurred it is important to test each item of the
system individually. Should more than one ionising appliance be connected to the
power supply, these must be tested individually.
To check the Pulsed DC system follow the procedure detailed below:
1. Switch o󰀨 the electrical supply to the system.

11
2. Disconnect all ionising appliances from the controller.
3. Reconnect the supply and switch ON the unit.
4. Using a high voltage probe (RS type 610 281) and meter (RS type 610
950) measure the voltage on each of the output sockets. The reading
should be at minimum power 4kV at Max power 8 kV
5. If the controller is found to be functional, test each of the attached products
independently following the instructions detailed in the appropriate Operation
and Maintenance manual.
If the 977v3 controller is found to be faulty please contact your local distributor or
Meech Static Eliminators Ltd.

12
Repairs and Warranty
The ioniser is warranted by Meech Static Eliminators Ltd to the original purchaser
against defects in material and workmanship for one year after purchase. Should any
malfunction occur, please return the Ioniser directly to us. All products returned to the
factory MUST be accompanied by a return authorisation number and must be shipped
prepaid. For prompt service, ship the unit to the factory with the return authorisation
number shown clearly on the label. Be sure it is well packed in a sturdy carton with
shock absorbing material.
Include a note stating the nature of the problem as specically as possible, and also
include instructions for returning the Ioniser to you. We will pay one-way return surface
shipping costs on any repairs covered under the warranty.
Field repairs should not be undertaken during the warranty period. Repair attempts by
unqualied personnel will invalidate the warranty.

Technical Specication
Model 977v3 Power supply
Input voltage : 65 to 250V
Input frequency : 45 to 65Hz.
Output voltage : adjustable between 4kV D.C. and 8kV D.C.
Output current : 120 Micro amps.
Output balance : Adjustable between a ratio of positive and negative of 20/80
to 80/20.
Output frequency : Adjustable between 0.5 Hz and 20Hz.
Max temperature : 60 °C
Weight : 0.5Kg
Remote On / O󰀨 : 3.5mm Jack
Alarm relay : 8 pin DIN connector (U style)
Pin 1 relay normally closed contact
Pin 2 ground
Pin 3 +24V
Pin 4 normally open relay contact
Pin 5 not used
Pin 6 relay common contact
Pin 7 Feedback signal
Pin 8 not used
Note RL1 is only rated for 24V d.c 5 amp
Operating temp. : -10 Deg C to +65 Deg C
Short circuit
backup protection : Controller must be supplied from a switched outlet
incorporating a 1 amp fuse
Fuse rating : 0.250 Amp slow blow ( 5 x 20mm)
13

CE Approval
An EC declaration of conformity for this product exists in respect of Low Voltage
Directive:72/23/EEC (“LVD”) & Electromagnetic Compatibility Directive : 89/336/EEC
(“EMCD”).
Health and Safety
Emission of Ozone: Considerably below international standard of 0.1ppm.
14

15

©Meech Stac Eliminators Ltd 2017 www.meech.com
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Range Road, Witney
OX29 0YN, UK
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(Shanghai) Co. Ltd
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India
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Singapore
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