This manual is written accordingly to the normative UNI 10653 – UNI 10893 –
CEI EN 61187. 1.1 WARRANTY. This instrument is covered by warranty for all ...
UNI EN ISO 9001:2000 CERT. N. 9115 BCEL
OPERATOR’ S MANUAL
AF 511.2 ANTIFOAM CONTROLLER
Scale: 0/100 µS Power: 110/220 Vac
Option S/N REP N°
Revision A – Valid from S/N 101.000 B&C Electronics Srl – Via per Villanova 3 – 20040 Carnate (Mi) – Italy P.IVA 00729030965 Tel +39 039 63 1721 – Fax +39 039 607 6099
[email protected] - www.bc-electronics.it
B&C Electronics
AF 511.2 - Rev. A
Index 1
GENERAL NOTES ...........................................................................................................................3 1.1 WARRANTY ...........................................................................................................................3 1.2 CE MARKING .........................................................................................................................3 1.3 WARNINGS.............................................................................................................................3 1.4 TECHNICAL SUPPORT AND REPAIRS ..............................................................................3
2
MEASURING SYSTEM ...................................................................................................................4 2.1 FUNCTIONS............................................................................................................................4 2.2 ACCESSORIES AND OPTIONS ............................................................................................4
3
SPECIFICATIONS............................................................................................................................5 3.1 FUNCTIONAL SPECIFICATIONS ........................................................................................5 3.2 TECHNICAL SPECIFICATIONS...........................................................................................6 3.3 PHYSICAL SPECIFICATIONS ..............................................................................................6
4
ISTRUZIONI PER L’UTILIZZO......................................................................................................7 4.1 PACKAGE LIST ......................................................................................................................7 4.2 PACKING AND UNPACKING ..............................................................................................7 4.3 STOCKING AND SHIPPING .................................................................................................7 4.4 DISPOSAL ...............................................................................................................................7 4.5 PHYSICAL INSTALLATION.................................................................................................8 4.5.1 Environmental conditions.................................................................................................8 4.5.2 Mounting ..........................................................................................................................8 4.5.3 Electrical installation ........................................................................................................8 4.6 OPERATING THE SYSTEM ................................................................................................10 4.7 CALIBRATION .....................................................................................................................11 4.8 MAINTENANCE ...................................................................................................................12
5
DRAWING AND ATTACHMENTS..............................................................................................12
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B&C Electronics
AF 511.2 - Rev. A
1 GENERAL NOTES This manual is written accordingly to the normative UNI 10653 – UNI 10893 – CEI EN 61187.
1.1 WARRANTY This instrument is covered by warranty for all manufacturing defects. Please read the Warranty Certificate at the end of this manual.
1.2 CE MARKING This instrument is in compliance with the European Union directives : -
73/23/EEC (Low Voltage Directive) amended by 93/68/EEC. 89/336/EEC (Electromagnetic Compatibility Directive) amended by 92/31/EEC and 92/68/EEC.
The marking is placed both on the instrument packaging and on the serial number label attached to the instrument.
1.3 WARNINGS The manuals includes the following symbols: Caution, refer to accompanying documents Caution ISO 3864, N°B.3.1
*
Attention
)
Note
“*”
Revision
This symbol is used to indicate that if instructions are not followed correctly the instrument could be damaged. This symbol is used when the operator is asked to pay particular attention to what is written in the manual. This symbol is used in all those chapters that have been reviewed to indicate that something has changed from previously issued manuals.
1.4 TECHNICAL SUPPORT AND REPAIRS B&C Electronics provides its Clients with a free Technical Support in case of needing during installation and usage of the instrument. Also, B&C Electronics offers to all Clients the possibility of sending instruments to the manufacturing headquarter, in Italy, for repairs. For more details, please take a look at the data sheet placed at the end of this manual. -3-
B&C Electronics
AF 511.2 - Rev. A
2 MEASURING SYSTEM The measuring system is composed by the instrument AF511.2 and by an electric conductivity probe, which characteristics are defined by the user in accordance with the specific applications. The 2 electrodes sensor, for example, can be made with a metallic pole in the fermenter and a mass connection in the liquid.
2.1 FUNCTIONS This instrument, connected with a suitable sensor, performs the following: -
it detects foam in the fermenters. The instrument points out the presence of foam when the probe’s metallic pole is in contact with it;
-
it activates the anti-foam devices or it controls the level in continuous cultures by means of a set-point;
-
it shows the conductivity value measured by the probe.
2.2 ACCESSORIES AND OPTIONS In order to operate, the instrument requires a conductivity probe, which is not included and it must be ordered separately. All available options for this instrument are described in Chapter 3.2 “Technical specifications”.
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B&C Electronics
AF 511.2 - Rev. A
3 SPECIFICATIONS 3.1 FUNCTIONAL SPECIFICATIONS Display On the 11 segments display 1 (Fig.1), the instrument shows the value of conductivity given by the contact between the probe and the liquid or foam. The measuring scale is in %; the end of the scale corresponds to a conductivity value of 100 µS, while the center of the scale corresponds to a conductivity value of 10 µS. The beginning of the scale corresponds to the display turned off completely. Zero adjustment Zero adjustment is done with the trimmer 2 , placed on the front panel. Sensitivity adjustment Sensitivity adjustment is done by means of trimmer 3, placed on the front panel. If necessary, it is possible to make a wider sensitivity adjustment by means of trimmer R74 marked “K adj” and placed on the rear panel. Set point adjustment The instrument has a set-point that can be adjusted along the complete measuring scale, and that can activate an output relay, pointed out by the red LED 7. The value of the set-point is adjustable by using the knob 8 on the scale. Relay delay The relay of the regulator can be activated with an adjustable delay from 0 to 5 seconds by means of trimmer R14 marked “DEL B “ and placed by the rear terminal block. The red LED 7 turns on with less brightness during the delay time previously set.
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B&C Electronics
AF 511.2 - Rev. A
3.2 TECHNICAL SPECIFICATIONS Voltage: Input: Scale: Display:
100/220 Vac +/-10 % 50/60 Hz from conductivity cell 0/100 % corresponding to 0/100 µS bar graph at 10 segments
Zero: Sensitivity:
+/- 15% +/- 20 % fine adjustment coarse adjustment
Regulator hysteresis: Switching time: Regulator delay: Relay contacts:
+/- 0.25 % < 0.5 seconds 0/5 seconds 5 A - 220 V resistive load
Temperature: R. Humidity:
0/50 °C 95 % without condensate
Fuse: Power:
80 mA T (110 V) 3 VA max
Weight: Dimensions: Protection
1.014 kg 241 x 89 x 174 mm IP 41
32 mA T (220 V)
OPTIONS 091.403
power 24 Vac
3.3 PHYSICAL SPECIFICATIONS The instrument is designed for panel mounting. It consists of a metallic case with an epoxy paint. The front panel is in anodized aluminium covered by a polycarbonate label. Fig. 3 shows the physical details, dimensions and drill plan of this case. Connections to the power supply, loads, recorders and probes are made by means of a detachable terminal block on the rear side.
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B&C Electronics
AF 511.2 - Rev. A
4 ISTRUZIONI PER L’UTILIZZO 4.1 PACKAGE LIST The instrument includes: -
N° 1 instrument with label reporting
marking and serial number;
-
N° 1 screwdriver;
-
N° 1 fuse for power at 220 volt;
-
N° 2 fuses for power at 110 volt;
-
N° 1 operator’s manual with warranty certificate and repair service data sheet.
4.2 PACKING AND UNPACKING Open the carton box and pull out the instrument in the clear plastic envelope. Keep the carton box, the screwdriver and the fuses. In order to pack the instrument correctly, please follow these directions backwards.
4.3 STOCKING AND SHIPPING If you need to keep the instrument in a stock room for a long period of time, please make sure it stays in a dry place. For shipping, place it in the carton box as described in the previous chapter.
4.4 DISPOSAL In case you will have to dispose of the instrument, please follow all rules and regulations describing how to discard goods that contain circuits and electronic components.
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B&C Electronics
AF 511.2 - Rev. A
4.5 PHYSICAL INSTALLATION 4.5.1 ENVIRONMENTAL CONDITIONS The instrument can be installed near the sensor or at distance, in the switch board, away from potential crashes and corrosive fumes. Room temperature and humidity may not exceed the maximum values described in Charter 3.2 “Technical specifications”. It is the operator’s duty to verify that the installation is in accordance with the local regulations.
4.5.2 MOUNTING The instrument must be panel mounted on a rigid surface and in accordance with the measures reported in Fig.3. The instrument can also be mounted in a case with IP65 protection (for example the BC931.1, available in the B&C Electronics catalogue). The sensor must be installed in vertical position with the lower end corresponding to the level of foam that the operator wishes to control.
4.5.3 ELECTRICAL INSTALLATION Electrical installation consists of: -
connecting the power supply to the instrument; connecting the sensor to the instrument; connecting alarms, pumps and valves if necessary.
The connections to the controller are made on terminal blocks located on the rear side. The power and output connections are made at the 14 pin terminal block. The input signal connections are made at the 4 pin terminal block. Do not power the instrument while doing the following: - connecting sensors and others; - maintenance. ------------------------------------------------------------------------------------------------------------------------Before connecting the system to the power supply check the following: -
check that all connections to the instrument are made to the terminal blocks marked with the value of power supplied (110 V or 220 V); - check that terminal 1 is connected to the ground and that all connections are correct; - check that all connections to the terminal blocks are well done; - the instrument is supplied with the fuse for 220 volt. Replace the fuse with the right one to power at 110 volt where necessary, as described in Chapter 4.8 “Maintenance” -------------------------------------------------------------------------------------------------------------------------All damages caused by faulty connections during installation are not covered by warranty. -8-
B&C Electronics
AF 511.2 - Rev. A
Connecting the power supply -
connect ground to terminal 1 connect the 110 Vac power to 2 - 3 terminals connect the 220 Vac power to 2 - 4 terminals
-
use 32 mA T fuse for 220 Vac power use 80 mA T fuse for 110 Vac power -
power the device by means of an isolation transformer avoid main voltage from an auto-transformer avoid main voltage from a point with heavy inductive loads separate power supply wires from signal wires control that the main voltage value id correct
Connecting the sensor The sensor cabling is a critical part for the better functioning of the whole system. -
use cables without interruptions between sensor and instrument. In case of cable interruption, use high insulation terminals; keep the cable away from power wires on the overall length.
Connect the sensor between terminals 29 and 31. Connecting alarms, pumps, valves The output connection is made at the rear terminal block and it consists of relay contacts corresponding to the regulator “B”. Regulator “A” Not available in this model Regulator “B” terminal 5 marked C : common contact terminal 6 marked NO : normally open contact terminal 7 marked NC : normally closed contact The relay output consists of voltage free contacts. We suggest to protect the contacts by an external fuse in case of short circuit on the load. The action of the relay may be delayed from 0 to 5 seconds by means of the rear trimmer marked “DEL B”.
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B&C Electronics
AF 511.2 - Rev. A
4.6 OPERATING THE SYSTEM System controls The system controls are described in Fig.1. -
the general switch 5 is to torn ON and OFF the instrument;
-
the knob 8 is to define the correspondent set-point.
Pre-operation check On the front panel of the instrument are located all the indications necessary to all functioning preliminary checks. The green LED 4 indicates that the unit is turned ON and that all circuits are properly functioning. The controllers' cards are pre-adjusted at the factory; if the sensor is connected correctly, as described earlier, the system should then function correctly. If necessary, the zero and sensitivity calibration shall be done by means of trimmer 2 and 3. The trimmer R74 marked “K adj” placed in the instrument rear-end can be used for the coarse sensitivity adjustment. The regulator features the set-point check by red Leds 7 which is a part of the circuitry powering the relay. When the monitored value is above the set-point, the Led of the regulator is alight and the corresponding relay is activated. When the sensor is submersed in the liquid, the display will not have any LED lit. If one or more display’s LED is lit, it will be necessary to regulate the trimmer of zero until they turn off, as indicated in Chapter 4.7 “Calibration”. Rotate the set-point regulation knob 8 to the required value. The functioning of the regulator relay is pointed out by the red LED 7. With the laboratory setting, the regulator has MAXIMUM function. In this configuration the relay is activated when the value of conductivity exceeds the set value value. In this case the LED 7 is lit. Operation In order to start the installed system according to the above indications, operators must move the general switch 5 in position I , and wait for the display’s LED 1, indicating the conductivity value of the liquid or of the testing foam, to be turned on. Set the knob 8 on the values required by the different applications.
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B&C Electronics
AF 511.2 - Rev. A
4.7 CALIBRATION The instrument is supplied with a laboratory calibration done by electric resistances that simulate the sensor response when in contact with the foam. The values of this calibration are the following: 1 µS 10 µS 100 µS
switching on 2° LED of the bar graph switching on from 2° to 6° LED of the bar graph switching on from 2° to 11° LED of the bar graph
When the cell is not in touch with foam, all LED are turned off. Zero calibration When the cell is connected to the instrument a "zero" calibration may be required in order to compensate the residual conductivity of the connecting cable. The correction becomes necessary when some indicator’s LED remain turned on even if there is not any contact between the sensor and the foam. Keep the cell dry and not in contact with foam, rotate counterclockwise trimmer 2 marked "zero". Stop the rotation as soon as the second segment of the bar graph turns off. Sensitivity calibration Sensitivity calibration becomes necessary when the signal given by the sensor in contact with the foam is not able to turn on a sufficient number of LED. Sensitivity is adjusted with trimmer 3 marked "sens", and if necessary, with the coarse sensitivity trimmer of on the rear, marked “adj K”.
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B&C Electronics
AF 511.2 - Rev. A
4.8 MAINTENANCE Thanks to the quality components used, the controller AF511.2 is highly reliable. If properly installed, the instrument does not need any particular maintenance. If the green LED 4 does not lit, check for the presence of the power supply and the fuse placed in the rear of the instrument on the left side of the terminal blocks.
Disconnect the power supply to the monitor before performing the following procedures: -
removing dust from terminal blocks and printed circuit board; operating on terminal blocks connection cables; mounting the instrument on the panel; replacing the fuse
The state of the cell's surface is critical for the normal operation of the system. In order to assure a good contact with the liquid, please make sure to follow all maintenance operations suggested by the sensor’s manufacturer.
5 DRAWING AND ATTACHMENTS Figure 1 Figure 2 Figure 3
Front panel Connections Drill plan
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B&C Electronics
AF 511.2 - Rev. A
FRONT PANEL
1.
Bar graph display
2.
Zero adjustment
3.
Sensitivity adjustment
4.
Power-on LED
5.
Power switch
7.
Switched relay light
8.
Set point adjustment
9.
Handle
Fig. 1
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B&C Electronics
AF 511.2 - Rev. A
CONNECTIONS
1.
Ground (power)
2. 3.
110 Vac power supply
2. 4.
220 Vac power supply
5. 6.
Relay N.O. contacts
5. 7.
Relay N.C. contacts
11.
Ground (signal)
29. 31.
Sensor input
R14
Delay adjustment of relay B
R74
Coarse sensitivity adjustment
F1
Fuse placed by terminal 1.
Fig. 2
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B&C Electronics
AF 511.2 - Rev. A
DRILL PLAN (measures in mm)
Fig. 3
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B&C Electronics
AF 511.2 - Rev. A
WARRANTY CERTIFICATE 1) This instrument is guaranteed for 5 years from the day you purchased, for any damage caused by manufacturing defects. 2) The warranty is not valid in case of tampering, wear and tear caused by a faulty installation or maintenance. 3) The warranty includes only the repair of the instrument at no charge at the Laboratories of the manufacturer. 4) B&C Electronics is not responsible of damages caused by the usage of its instruments.
REPAIRS 1) Instruments that need to be repaired must be shipped pre-paid to B&C Electronics. 2) In order to efficiently help you solve your problem, we suggest you ship the instrument along with the Technical Support’s data sheet (here below) and an order for repair. 3) In order to quickly ship the repaired instrument back to the Client, unless differently required by the Client itself, shipment will be freight collect and through the Customer’s usual forwarder. 4) All extra expenses that have not been previously discussed will be charged to the Client. 5) In case the Client will ask for an estimate quotation and later decide not to repair the instrument, B&C will ask for a lump-sum payment to cover labour expenses.
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B&C Electronics
AF 511.2 - Rev. A
TECHNICAL SUPPORT Data sheet B&C Electronics provides its Clients with a free Technical Support in case of needing during installation and usage of the instrument.. In case of damage, we suggest you take advantage of our Technical Support by photocopying and fill out this data sheet and ship it along with the instrument.
□ ESTIMATE
□ REPAIR
COMPANY NAME ADDRESS
ZIP
REFER TO MR./MISS.
CITY PHONE
MODEL
S/N
DATE
Please check the operator’s manual to better identify the area where the problem seems to be and please provide a brief description of the damage: □ SENSOR
□ ANALOG OUTPUT
□ POWER SUPPLY
□ SET POINT
□ CALIBRATION
□ RELAY CONTACTS
□ DISPLAY
□ PERIODICAL MALFUNCTIONING
¾ DESCRIPTION
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