Logitech Electronics 3000 Series User manual

3000 SERIES™
Batch
Controllers
Model 3000BCL
User Guide!

Contents
Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety information for EU users . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Transformer connections (230V/115V AC selection) . . . . . . . . . . . . 5
Switches and connections
BATCH SET/PROG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
START/ï. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
RESET/PROG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
STOP/ñ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Rear panel switching facility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rear panel terminals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Sensitivity control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Relay protection circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Mains Earth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DC power supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Programming the instrument
Calculating a scaling factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Increasing the discrimination of the display . . . . . . . . . . . . . . . . . 9.
Setting up for the first time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
— Batch number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
— Decimal point. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
— Pre-batch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
— Scaling factor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
— Count up/down. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Altering programming on an instrument
that has been previously scaled . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Diagrams
Front & rear panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.
Connection diagrams - typical applications . . . . . . . . . . . . . . . . . . 13
Additional information
Electro-Magnetic Precautions & Low Voltage Directive . . . . . . . . 15
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
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Specification
Display 6 decade and sign 7-segment high brightness red LED, 14mm high
Decimal point Programmable from front panel
Scaling Programmable via front panel, retained in non-volatile memory.
Signal inputs
Standard
Standard sensitivity 180mV to 10V — protected to 100V
Frequency 0—100kHz maximum input
Impedance 15kΩminimum
Optional
High sensitivity version 12mV—1V (protected to 100V)
Analogue input module (specified as 0–1V, 0–5V, 0–10V, 0–20mA, 4–20mA)
Control inputs Opto-isolated — requires sink to 0V of 220W maximum.
External Start, Stop, Reset
Outputs
Standard
Transducer supply 10V DC nominal unregulated @ 80mA max
Dual Relay normally open and normally closed for Batch and Pre-Batch, rated at 8A
@ 240V AC
Optional Higher transducer supply voltage 24V DC @ 50mA max
Connections Screw terminals on rear panel.
Power requirement
AC Factory set to 115V or 230V AC 50/60 Hz, loading 3VA.
DC Mains Controllers can also be powered by providing 10V to 15V DC @
300mA max via the 10V terminal.
Alternatively, if specified at time of order, they can be configured to
operate from 24V DC only (refer to DC Power Supplies on page 8)
Temperature range
Operating 0°C to +50°C
Storage -20°C to +80°C
Dimensions 96 x 96 x 150mm (panel cut-out 92 x 92mm).
Weight 500g (standard mains supply version)
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General Description
3000 series™ Controllers are 6-decade seven segment high brightness red LED display instruments
based on the industry standard Intel 80C51 series Microprocessor.
They are built into half DIN (96mm x 96 mm) panel mounting housings and are supplied to operate
on either 115V AC or 230V AC (see Transformer connections on page 4), or 24V DC power supplies,
as requested when ordering.
The standard mains powered instrument may be powered instead from an external 12V DC supply
connected to the rear terminal block on pin 1 (12V) and pin 2 (0V)
Note: The facility to power a mains unit from an external 12V DC supply (instead of the mains
supply) cannot be used on instruments fitted with the optional Serial Interface unless the
requirement to retain this facility has been requested at the time of ordering and has been
catered for during build at the factory.
The circuitry is protected against mains borne interference offering excellent noise immunity for
maximum reliability.
The integral scaling factor allows conversion of the input pulse train to engineering units such as mm
or litres etc.
Independent positioning of the decimal point gives flexibility of presentation of displayed units and
resolution.
One signal input is available on the standard instrument (see customisation note below) and this is
connected between Input Sig and 0V. This input can be scaled easily by the user and, if necessary,
the signal level sensitivity can be adjusted from the rear of the instrument.
Volt free dual relay changeover outputs capable of switching 8A at 240V AC are provided.
Depending on the option specified at time of ordering, these are for either Pre-Batch and Batch levels
or Batch and Low Flow indication, and can be re-programmed very easily as and when necessary to
suit many applications.
During setting up the instrument is programmed either to count up or to count down. The start stop
and reset functions can be controlled via the front panel or with external switches (not supplied
unless specifically requested). If necessary, the front panel functions can be disabled, and for
additional security the switches can be key operated types.
3000 series™ Controllers are available with factory fitted options which must be specified when
ordering, see Specification section for details. Additionally, Logitech will customise the operating
modes of these Controllers to suit specialised applications. Many variations on the standard
software have been developed; please contact our Sales Office if this service is required.
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Safety Information for EU Users
WARNING This instrument must be earthed when powered from a mains supply (see also Mains
Earth on page 8). Refer to the rating label for the pre-set voltage and ensure that the instrument
voltage corresponds to the intended supply voltage.
Important: The wires in the power lead fitted to mains instruments are coloured in accordance with
the following code:
Green and Yellow . . . . . . . . . . . . . Earth
Blue . . . . . . . . . . . . . . . . . . . . . . . Neutral
Brown . . . . . . . . . . . . . . . . . . . . . . Live
As the colours of the supply lead fitted to mains supply instruments may not correspond with the
coloured markings identifying the terminals in your plug, connections should be made as follows:
• Connect the green and yellow wire to the terminal marked with the letter E or identified with the "(earth) symbol.
• Connect the blue wire to the terminal marked with the letter N or coloured black.
• Connect the brown wire to the terminal marked with the letter L or coloured red.
The mains supply to this instrument must be protected with a 1 Amp fuse.
Transformer Connections
3000 SERIES™instruments for use on mains power can operate on either a 230V or 115V 50/60Hz
AC supply.
Instruments are factory pre-set to operate from the mains voltage specified at time of ordering.
If, for any reason, the user needs to change the mains operating voltage the following procedure
must be adhered to:
1. Disconnect the Mains Supply.
2. Gently prise off the front panel bezel surround.
3. Remove the four screws at the rear of the case.
4. Carefully pull the rear panel backwards (keeping it upright) just enough to give room
to get a finger into the gap. You will be able to see a PCB in the middle. Carefully push
this to the front just enough to be able to grip the front panel at the sides. This panel is
plugged into sockets on the PCB. Firmly but carefully pull the panel out of the sockets
whilst holding the PCB and making sure that you do not bend the connector pins.
Withdraw the rear panel and PCBs from the back of the case.
5. Pads which select the operating voltage are located on the underside of the larger
printed circuit board. The existing link(s) should be removed and new link(s) should be
soldered across the appropriate pads. Re-assemble the instrument. NOTE: Take care
not to bend the connector pins but make sure that the connector is inserted fully home
before pushing the front panel back into the case.

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Switches and Connections
BATCH SET/PROG
This is the top central switch on the front panel. During initial setting up of the instrument this switch
is used in conjunction with the RESET/PROG switch to gain access to the programming mode (see
page 9).
The facility has been provided, if required, to restrict access to the programming functions to
authorised personnel only. This can be achieved simply by removing the direct link between Control
and 0V on the terminal block. Alternatively, the direct link can be replaced with a key-switch operated
link.
If the link is removed or disabled, then whilst the instrument is in normal daily use, the BATCH SET
switch can be used by the operator to alter the value programmed in for the main BATCH value only.
The link must be re-made before it is possible to change the Pre-Batch value.
START/ï
This is the left hand switch in the bottom row on the front panel. During initial setting up of the
instrument this switch is used to select which decade of the display is to be altered. When in normal
operation this switch is used to start a batch run.
RESET/PROG
This is the central switch in the bottom row on the front panel. During initial setting up of the
instrument this switch is used in conjunction with the BATCH SET/PROG switch to gain access to the
programming mode (see page 9). Whilst in the programming mode, this switch is then used to select
which function is to be altered.
When in normal operation this switch is used to reset the display prior to commencing a new batch
run.
STOP/ñ
This is the right hand switch in the bottom row on the front panel. During initial setting up of the
instrument this switch is used to alter the value entered in each decade when changing the
programmed values for each function.
When in normal operation this switch is used to stop a run if the sequence needs to be interrupted
before the programmed batch size is completed.
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Rear Panel Switching
In addition to the front panel controls, the START, RESET and STOP functions are available through
terminals on the rear panel. To activate the controls, they must be grounded to 0V. These can be
used to automate the batching
Rear Panel Terminals
Sensitivity Control
This is located to the right and above the terminal block on the rear panel and is factory pre-set.
However, should it be necessary during on-site installation, adjustment is accessible through a hole in
the rear panel itself.
Maximum sensitivity is obtained when the adjustment is turned fully clockwise. It is recommended
that the sensitivity level is increased only as far as necessary to obtain a steady signal. This
minimises the risk of detecting spurious signals.
Relay Protection Circuitry
There is a snubber network built into the instrument circuitry across the relay contacts to prolong the
operating life and reduce the risk of interference from contact arcing.
This protection circuit has a leakage current of 3.5mA at 240V AC (negligible on DC supplies) which
may, under certain circumstances, hold some loads, for example low power relays, in the “ON” state.
If this problem occurs please contact our Sales Office for advice.
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12V
+12V DC unregulated @ 80mA (transducer supply)
0V
Common
Input Sig
Input signal
0V
Common
0V
Common
Control
Reset
Reset the display and stored batch
Stop
Stop the batch
Start
Start the batch
Pole
N/O
Normally open
Pre-Batch Relay
N/C
Normally closed
Pole
N/O
Normally open
Batch Relay
N/C
Normally closed
"
"

Mains Earth
3000 SERIES™Controllers that are supplied to operate on mains power (115V or 230V AC) are fitted
with a three core mains cable. The Earth is normally connected by an internal link to 0V.
For applications where it is found that the mains earth is of poor quality or when it is essential that the
signal input is floating it may be necessary to remove this link.
In these cases, the user must determine the most appropriate method of earthing the instrument and
may need to remove the internal connection — if this is found to be necessary please refer to our
Sales Office for advice (see also Safety Information for EU Users on page 5 and Electromagnetic
Precautions on page 15).
DC Power Supplies
Mains powered Controllers can be powered instead by feeding 10V to 15V DC into the 12V terminal
on the rear panel as long as there is no power on the 3-core mains cable. If you wish to use this
facility you must ensure that the supply is free from transient interference.
Alternatively, if specified at time of order, Controllers can be configured to operate straight from a
nominal 24V DC supply (16V to 30V DC) via a 2-core cable (leaving the 12V terminal free for
operator use). 24V Controllers should be connected to a supply protected with a 500mA fuse.
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Programming the Instrument
Calculating a Scaling Factor
It is straightforward to calculate a scaling factor for a 3000 Series™ Controller. If a one-for-one count
is required then simply enter a scaling factor of 1.
If, for example, you have a requirement for counting flow in litres from an associated pulse rate, the
following procedure could be followed. Suppose the flow meter output is 340 pulses per litre - simply
set the scaling factor to 340 to give you an accurate reading in litres. If the readout is required in
millilitres then the signal from the flow meter could be considered as being 0.34 pulses per millilitre —
so set a scaling value of 0.34. In essence, set the scaling factor to the number of pulses per unit of
measurement required.
If however the value to be displayed is higher than the number of pulses received, the following
method should be adopted.
Using as an example a cut-to-length system where 1 pulse = 25mm. Here, 1 pulse must be used to
signify 25mm of material. The scaling factor is calculated by using 1 ÷ 25, which gives 0.04. This
can be set by entering the number (without decimal points) into the scaling factor.
Increasing the discrimination of the display
Once you have calculated the required scaling factor it may be advantageous to increase the
discrimination of the display. This can be achieved by moving the decimal point when setting the
scaling factor.
For example, with a pulse count of 100 and a scaling factor of 1, then the reading will be 100. If the
scaling factor is set to 0.1 then the display would read 1000, but if the decimal point is moved one
place to the left when setting the batch number, then the display will be 100.0. Thus an extra
decade of discrimination has been achieved.
Note: The displayed value is calculated as the pulse count divided by the scaling factor.
1. Setting Up for the First Time
For initial set-up, the instrument is supplied with a wire link between Control and 0V (terminals 6 and
5) that allows setting of the various options. If this link is removed, only the Batch value may be
altered. When supplied, the instrument has been programmed with zero settings, and when initially
powered up will display SET…. BATCH …. 0(.... signifies a one second delay before the display
changes). The required settings may now be entered. If it is desired to empty the memory and
return to this initial state set the scale factor to 0and press BATCH SET.
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Batch Number
To set the Batch number, use the right-hand button (arrow up) to step through the digits sequentially.
The left-hand button (arrow left) moves the display one decade. Each decade's value may be set
using the right-hand button. When in operation, the instrument will count, and when it reaches the
number set as Batch, it will operate the associated relay.
Decimal Point
When the batch number has been set, continue to press the left-hand button to step one decade at a
time to the left. When the most significant decade is flashing, press the left-hand button again, and
the decimal point will become active. Pressing the right-hand button causes the decimal point to step
one decade to the left.
Pre-Batch
Once the Batch has been set, pressing the RESET (lower middle button) will cause the instrument to
step to the next function — Pre-Batch. Set the required value in the same way as for the Batch
Number. The Pre-Batch value is set as the value before Batch at which the Pre-Batch relay is
required to operate.
For example, in count up mode, if Batch = 1000 and Pre-Batch = 200, then the count will start at 0
and the Pre-Batch relay will operate at 800. If count down mode is selected then the count would
start at 1000 and the Pre-Batch relay would operate at 200. The Batch relay operates at 0.
This gives the advantage that if the Batch number needs to be reset then Pre-Batch value will
automatically follow and remain 200 below the new Batch number.
Scaling Factor
Pressing RESET again now allows the scaling factor to be set. As described in Calculating a Scaling
Factor above, this is be used to turn the input count in pulses into a meaningful readout. Use the left-
hand button to step to the most significant digit, press the left-hand button again, and the decimal
point is displayed. Use the right-hand button to step the decimal point to the required position.
Once a scaling factor has been set it is retained in memory upon power down. When power is
reinstated the unit will immediately be ready for operation without need for a reset command.
Count Up / Down
The next item to be set is the Count Up / Count Down option. When CNT UP is displayed, the
instrument will count up activating the relays at counts determined by the Batch / Pre-Batch settings.
Pressing the right-hand button will change the option to CNT DN. If this is selected, the instrument
will count down from the Batch setting activating the associated relay when it reaches zero. In either
case, the Pre-Batch number is an amount before the complete batch is reached.
Pressing RESET once again brings the available function back to BATCH. You can step through the
functions as many times as necessary to input or check the required settings. Once you are satisfied
that the settings are correct, pressing and releasing the BATCH SET button takes the instrument into
operating mode ready for use.
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2. Altering values once an instrument has been programmed
To change from operating mode, first press and hold down the RESET switch and then press and
hold down the BATCH SET switch. The instrument will step through SET 3 …. SET 2 …. SET 1 ….
SET 0, at which point the switches can be released. The instrument is now in the set mode, and you
are able to reset the required parameters as in the preceding section.
Alternatively, if only the Batch value is to be changed, press and hold down just the BATCH SET
button. Again the display will step through SET 3 …. SET 2 …. SET 1 …. SET 0, at which point the
button can be released and the new Batch value can be entered by stepping through each decade as
before.
Remember, if the wire link between Control and 0V on the terminal block has been removed or is
protected by connection via a key switch, you will be restricted to altering the Batch value only,
irrespective of whether the RESET button is held down. As previously stated, access to all the other
parameters is barred without the link present.
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Diagrams
Front Panel Layout
Rear panel layout
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Connection diagrams – typical applications
Variable reluctance Magnetic Pick-ups
Electronic Sensors and Rotary Encoders
Photo-electric sensor or Proximity probe
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Digitising encoder (shown with optional Measuring Wheel)
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Additional Information
Electro-Magnetic Precautions
Logitech have designed in a great deal of noise immunity into the product in accordance with
EN5001-2 and EN5002-2 (radiated emissions, conducted emissions, ESD, radiated susceptibility and
fast burst transient testing)
However it is still vital to use good EMC (Electro-Magnetic Compatibility) techniques on installation of
both this and other associated electronic equipment and sensors in order to ensure reliable
operation.
It is important to note that if used with systems that radiate high levels of harmonic noise such as DC
Drives, AC Inverters and Servo Drives then the levels of imposed interference can greatly exceed
that of the European Standards.
In such cases it is important to ensure that mains leads are routed as far as possible from all cables
carrying power to such equipment and that the supply should, if viable, be taken from a clean source.
Where this is not possible, it is advisable to use a good quality mains filter mounted as close to the
instrument as possible, ensuring that the cable between the filter and the instrument is kept separate
from any cables carrying high levels of current or any fast switching transients.
All signal connections to the instrument should be made using screened lead with the screen
connected to mains earth at one end only.
Wherever possible, it is advisable to connect the 0V terminal to mains earth, unless it is found that
the mains earth is of poor quality or when it is essential that the signal input is floating — see Mains
Earth on page 8.
Low Voltage Directive
It is essential that the mains supply to the instrument is fused externally to no more than 1A and that
the cabling supplying power to the instrument is rated for at least 3A.
Low voltage signal cables should not be run in the same conduit or twisted or tied to cables carrying
voltages in excess of 50V (AC or DC).
If the instrument is not installed fully in accordance with the instructions in this User Guide it may not
comply with the requirements of the Low Voltage Directive.
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Warranty
Controllers carry a two year warranty that is only valid where there is no damage caused by accident,
negligence, mis-application, or repairs/modifications attempted by unauthorised personnel. The
warranty only extends to the original purchaser.
Copyright © Logitech Electronics Limited
1994 to 2017
Document No: 300BCL-MKII_hb v. 3.0 August 2017
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Design and Manufacture of Electronic Systems and Instrumentation. Supply of Sensors and Transducers
Lane End | Church Aston | Newport | Shropshire | TF10 9JJ | UK
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