ESA Ex22PB User manual

SEQUENCER FOR DEDUSTING PLANTS
DOCUMENTATION INDEX
1.1 Description
2.1 Standard features (List)
2.2 Standard features (Details)
3.1 Installation rules and security
4.1 Technical features
5.1 Enter data in set mode
6.1 Display indications in operation
7.1 Display indications with alarm
8.1 Information and guide on the display
9.1 Wiring Diagram
10.1 Electronic board size and voltage settings
11.1 Enclosure dimensions
12.1 Problems solutions
13.1 Warranty
14.1 Certificates
1.1 DESCRIPTION
Sequencer for dedusting plant cleaning cycle control without digital dP.
2.1 STANDARD FEATURES
B10b Manual activation of every single output from keyboard
B1b Select Number of outputs
B2x Activation time from 0.05 to 5.00 sec.
B3x Interval time from 1 to 999 sec.
B8b Short-circuit protection of every single output
C0 Input activation from external contacts
C6 ON/OFF cleaning cycle from external pressure switch
D1a Additional cycles after fan stop
D6 ON/OFF Cleaning cycle from external contact.
G1 Maximum load power 25W per output
HV Input / Output voltage selection.
Code: Ex22PB : ATEX - Zone 22
Voltage IN / OUT: 115 VAC - 230 VAC (24 VAC - 24 VDC On Request)
Max Nr. Output: 16
GENERIC DOCUMENTATION. THE SPECIFIC DOCUMENTATION IS ATTACHED TO THE SEQUENCER
II 3D Ex tc IIIC IP65 T100°C

2.2 STANDARD FEATURES
The presence of options on request could nullify or modify the operating of standard features.
Code Description
B10b Manual activation of every single output from keyboard
By keyboard, it is possible to activate manually and individually every single output for an operation test.
Press key C to select the desired output to be activated. Press key A to activate the output.
The output is holded active for all the time that key A is pressed. It allows to measure the output voltage by using a
tester.
In case of anomalous operating, do this test with electrovalves disconnected.
B1b Select Number of outputs
The selection of the number of outputs to be control led is connected by keyboard in SET MODE. If you set 0 or AUTO
in this function the sequencer will automatically select the connected loads by skipping the non connected ones.
Minimum load 5W ÷ 12 W depending on the output voltage. If the load is below of the minimum, the autoselection does
not work correctly, set the number of outputs in set up.
B2x Activation time from 0.05 to 5.00 sec.
B3x Interval time from 1 to 999 sec.
If the pulse time is lower than 1 sec. it is possible to set any interval time value in the range indicated.
If the activation time is higher than 1 sec. the minimum settable interval time is:
Minumum interval time = 5 times pulse time (B2x)
B8b Short-circuit protection of every single output
In case of short-circuit, the corresponding output is automatically skipped. Relay K2 will signal the alarm condition and
display will show the alarm situation code E1 (See the alarm description).
Press key E to reset the alarm.
C0 Input activation from external contacts
In Set up you can activate or deactivate the control of all the inputs of the device.
If inputs are deactivated, they are considered as always closed and no jumper is required on the terminal board.
Use a jumper for unused inputs if you activate them.
NOTE: all inputs of the device have to be connected to external contact without voltage.
C6 ON/OFF cleaning cycle from external pressure switch
If contact C6 is open, the cleaning cycle stops at the end of the whole cleaning cycle and the display shows 'P', which
means stop for low dP.
If contact C6 is closed, the cleaning cycle restarts from the beginning.
NOTE C6: Use a jumper for C6 if it is not used with active inputs (see F01).
D1a Additional cycles after fan stop
By connecting an auxiliary volt-free contact of the fan circuit with the sequencer, it is possible to add a well-defined
number of cleaning cycles after the stop of the fan. Their number is selectable from 0 to 99 from the keyboard.
The activation of post-cleaning cycles starts even if C6 contact is open.
If contact D1a is open, the display shows '-0-' to indicate cycle stop for fan Off.
During the cycles after the fan stop, the decimal points blink on the display.
NOTE D1a: Link D1a clamps if it is not used with active inputs (see F01).
D6 ON/OFF Cleaning cycle from external contact.
If contact D6 is open, the cleaning cycle is not enabled and the display shows 'OFF'.
With sequencer with digital dP control the display shows 'OFF' and the dP reading alternatively.
By closing D6, the cleaning cycle can start from the first electrovalve
NOTE D6: Link D6 clamps if it is not used with inputs from external contact active. (see 5.1 : SETUP F01).
G1 Maximum load power 25W per output
HV Input / Output voltage selection.
Use the jumpers on the board to select the supply voltage and the output voltage on the electrovalves. (See the board
layout).
JP1: Supply voltage selection between 115VAC and 230VAC.
JP2: Output voltage selection between 24, 115, 230 V (Only with 115VAC or 230VAC power supply).
JP3: Output voltage selection between AC and DC only with JP2 set to 24V.
WARNING: set F08 (PB/BB) or F16 (PC/BC) to the same output voltage that has been selected by means of the
jumpers to adjust the shortcircuit threshold. Otherwise, this might cause any malfunction or damage to the sequencer.

3.1 INSTALLATION RULES AND SECURITY
3.2 Protect the device against the direct exposure to the sun.
3.3 Avoid arranging the device in the proximity of or in direct contact with any source of heat and electromagnetic field. Connect
the device on supply lines different from those used for motor drives or other devices that may cause some noise on the
net.
Not security equipment.
3.4 Fix the device on the wall at minimum 60 cm from the floor.
3.5 The access to the device to adjust operating parameters have to be done by person with appropriate skills.
3.6 Before acting on the device for any operation, check for safe conditions. For electrical operations never forget to disconnect
the power supply, wait for 30 seconds for the internal capacitors discharge before opening. At the end of the operations
close the device to restore the protection degree before powering again.
3.7 In case of faulty that does not depend only the fuse, switch off immediately the supply voltage and contact the supplier.
3.8 One time in a month or more frequently if necessary verify if there is dust on the enclosure of the device and remove it if it is
present by using wet cloth.
3.9 For supply voltages, cabling and voltages applicable to the relay contacts, follow the current rules
3.10 For all input control signals to the Timer (D1a, D5, D6,...) use anti-flame wires with a minimum section of 0.5 mm².
3.11 For the electrical connection of the supply voltage and filter cleaning electrovalves use anti-flame wires with a minimum
section of 0.75 mm². For output relay contacts use anti-flame wires with a minimum section of 1.5 mm2.
3.12 The lack of application of existing rules and standards of installation and safety exonerate the manufacturer of
responsibility.
3.13 Do not connect to earth the common of the electrovalves (see electrical wiring diagram).
4.1 TECHNICAL FEATURES
Power requirement 10 VA (Stand-by) - 30 VA Max ev ON
Operating temperature - 10 °C ÷ + 50 °C
Dimensions / Protection degree 140x230x95 mm. / IP65
Terminals 2,5 mm² - 250 VAC / 12 A
Voltage applicable to the relay contacts 42 VAC - 5 A Max / 42VDC - 3A Max
A wrong supply voltage connection might cause irreparable damages to the device.
The fuse wire protect only from any short circuit and not necessarily from wrong supply voltage.
Device in class III.

5.1 ENTER DATA IN SET MODE (SETUP)
1. Press key C to have access to the SETUP menu F01
2. Press key C again to select the desired function F01, F02, F03 ...
3. Press key A to modify data.
4. Press key A or C at the same time to change the data item.
5. Press key B to go back to the function menu SETUP Fxx.
6. Press key B to quit SETUP and go back to the operating mode.
SETUP DESCRIPTION DATO Range Code Default
F01 Inputs from external contacts 0 = Enabled
1 = Disable 0÷1 C0 1
F02 Pulse time from 0.05 to 5.00 sec. 0.05÷5.00 B2x 0.50
F03 Interval time between ev. from 1 to 999 sec. 1÷999 B3x 005
F04 Selection Number of electrovalves 0 = Automatic selection of the load
1÷xx = Set number of solenoid valves 0 ÷ 16 B1b 000
F05 Number additional cycles after fan stop 0÷99 D1a 002
F06 TEST Manual activation of
every single ev. from keyboard Key A = Activate solenoid
Key C = Select solenoid
These keys work only after entering the SETUP
0 ÷ 16 B10b
F07 Input terminals 14-15 Set input C6 / D6
0 = C6 - 1 = D6 (See 2.2) 0÷1 C6/D6 0
F08 Threshold adjustment for option B8x correct operating. See jumper JP2 position. HV Vout

6.1 DISPLAY INDICATIONS IN OPERATION
DISPLAY DESCRIPTION Code
OFF Cycle stops for cleaning consent missing (D6 open) D6
-0- Cycle stops for ventilator OFF. Contact D1a open (See 2.2) D1a
A01 Number of activated electrovalve
P Cycle stops for contact C6 open. (See 2.2) C1d
... Additional cycles after ventilator stop active (Blinking points) D1a
--- Pause time between ev. scroll bar B3x
7.1 DISPLAY INDICATIONS WITH ALARM
DISPLAY DESCRIPTION
E1/05 Overload output 05 (Example, Display blinking). Check the ev. connection; state of the coil of the ev. indicated on
display and possible presence of water inside the electric connector of the ev.
8.1 INFORMATION AND GUIDE ON THE DISPLAY
Not available for this model

9.1 WIRING DIAGRAM

10.1 ELECTRONIC BOARD SIZE AND VOLTAGE SETTINGS

11.1 ENCLOSURE DIMENSIONS

12.1 PROBLEMS SOLUTIONS
DEFECT POSSIBLE CAUSE SOLUTION
Display OFF Fuse burnt.
Supply voltage.
Jumper for input voltage selection
Check the protection fuse on supply line.
Check if supply voltage is present and if it
agrees with supply voltage needed by the
device (clamps 1 and 2).
Check jumper JP1.
No output activation Output voltage.
Connection to the electrovalves.
Jumper for output voltage selection
Check that sequencer output voltage and
electrovalve coils have the same voltage.
Check the connection between sequencer
and electrovalves and do manual test of
the outputs (See B10 / B10b).
Check jumper JP2 and JP3.
The cleaning cycle do not run in according
to the set value. The memory of the microprocessor could be modified by external factor. Switch Off the supply voltage of the sequencer. Hold down key B and switch
on the supply voltage. By means of this
operation the default data are loaded in set
up. Adjust the zero dP reading and the
other parameters according to the filter's
needs.
13.1 WARRANTY
The warranty lasts 4 years. The company will replace any defective electronic component, exclusively at our laboratory, unless
otherwise agreed, upon the Company's prior consent.
WARRANTY EXCLUSION
The warranty is not valid in case of:
1) Tampering or unauthorized repairs.
2) Wrong use of the device, not in compliance with technical data.
3) Wrong electrical wiring.
4) Inobservance of the installation rules.
5) Use of the device, not in compliance with CE rules.
6) Atmospheric events (Lightning, electrostatic discharge), Overvoltage.
We reserve the right to make any change without notice.

Company name / Company name: ESA Electronic Engineering
Postal address / Postal address: Via Kennedy, 28
Postcode and City / Postcode and City: 20010 Mesero (MI)
Telephone / Telephone: [phone]
E-Mail address / E-Mail address: [email protected]
declare that the DoC is issued under our sole responsibility and belongs to the following product:
Apparatus model / Apparatus model: Ex22PB
Product Type / Product Type: Sequencer / Sequencer
Serial number / Serial number:
Object of the declaration / Object of the declaration: Ex22PB
The object of the declaration described above is in conformity with the relevant Union harmonisation legislation
The object of the declaration described above is in conformity with the relevant Union harmonisation legislation
Directives 2014/30/UE, 2014/34/UE and 2011/65/UE
Directives 2014/30/UE, 2014/34/UE and 2011/65/UE
The following harmonised standards and technical specifications have been applied:
The following harmonised standards and technical specifications have been applied:
Title / Title Date of standard / Date of standard
EN 60730-1 2011
EN 50581 2012
EN 60079-0 / A11:2013 2013-09
EN 60079-31 2014
II 3D Ex tc IIIC IP65 T100°C
Signed for and on behalf of / Signed for and on behalf of
Mesero, 23 / 03 / 2021
Amministratore delegato / Managing directior
BELLINELLI GIANFRANCO

II 3D Ex tc IIIC IP65 T100°C
ADDITIONAL INSTALLATION RULES (ATEX ZONA 22)
The ATEX certification decade in case of every type of modifications of the original device that are not done by the manifacturer
All the electrical wiring must be done according to the Europen rule EN 60079-14
In case of faulty that does not depend only to the fuse, switch off immediately the supply voltage and contact the supplier. The
reparation of the device must be done only in our laboratory and the device must be sent with the enclosure to our factory.
In case of application of cable glands by the final user, The company does not assume any responsibility. Use only cable glands
IP65 ATEX certified with same or superior certification of the device and type ISO R/68.
The fixing holes must be done with the right diameter indicated for that cable gland.
With the purpose to avoid the entry of dust inside the equipment through the pneumatic connections for the reading of the dP,
insert on such lines an opportune systems for dusts blocking.
ATEX MARKING DETAILS
EUROPEAN UNION Conformity brand
Useful in ATEX classified zone with potentially explosive atmosphere.
II Group II. Surface plant
3D Category - Dust
Ex tc Level of protection by enclosure
IIIC Explosive conductive powders
IP65 Protection degree
T100°C Maximum surface temperature
-10<Ta<+50°C Ambient temperature