Metrohm 789 User Manual
CH-9101 Herisau/Switzerland
E-Mail
www.metrohm.com
info@metrohm.ch
789 Robotic Sample Processor XL
778 Sample Processor
Program version 5.789.0020+
and 5.778.0020+
Instructions for Use
8.789.1063 03.2007 / dm
Teachware
Metrohm AG
Oberdorfstr. 68
CH-9100 Herisau
These instructions are protected by copyright. All rights reserved.
Although all the information given in these instructions has been checked with great
care, errors cannot be entirely excluded. Should you notice any mistakes please inform the author at the address given above.
© Metrohm AG 2007
Printed in Switzerland
II Metrohm Sample Processor
Table of Contents
1 Introduction 1
1.1 Instrument description ....................................................................1
1.1.1 Field of application of the Metrohm Sample Processors........................1
1.1.2 Instrument versions..................................................................................3
1.2 Sample Processors as part of a system ........................................5
1.3 Information about these Instructions for Use................................6
1.3.1 Please note ..............................................................................................6
1.3.2 Additional documents..............................................................................6
1.3.3 Notation and pictograms.........................................................................6
1.4 Parts and controls ...........................................................................7
1.4.1 Overall view..............................................................................................7
1.4.2 Rear view..................................................................................................8
1.5 Connections.....................................................................................9
1.5.1 Sensors of the Sample Processor...........................................................9
1.6 Accessories .................................................................................. 11
1.7 The keypad.................................................................................... 13
1.7.1 The display.............................................................................................14
1.7.2 The keys.................................................................................................15
1.8 Safety information ........................................................................ 23
1.8.1 General: .................................................................................................23
1.8.2 Electrical safety ......................................................................................23
1.8.3 Personal protection................................................................................24
2 Installation 25
2.1 Installation flow chart................................................................... 25
2.2 Instrument setup........................................................................... 26
2.2.1 Setup......................................................................................................26
2.2.2 Mains connection...................................................................................26
2.2.3 Connecting the keypad .........................................................................27
2.2.4 Mounting a 786 Swing Head .................................................................27
2.2.5 Mounting the robotic arm ......................................................................28
2.2.6 Connecting pumps ................................................................................29
2.2.7 Connecting dosing devices and stirrers................................................30
2.3 Data transmission connections ................................................... 31
2.3.1 Remote connections..............................................................................31
2.3.2 Serial connections (RS232) ...................................................................37
2.3.3 Connecting a printer ..............................................................................38
2.4 Connecting up accessories ......................................................... 40
Metrohm Sample Processor III
2.4.1 Connecting rinsing and aspiration equipment......................................40
2.4.2 Attaching the tubing ..............................................................................41
2.4.3 Installing the titration accessories .........................................................42
2.4.4 Assembling pipetting accessories ........................................................44
2.4.5 Installing a double-hollow needle..........................................................45
2.4.6 Spray nozzles ........................................................................................45
2.4.7 Magnetic stirrer......................................................................................46
2.4.8 Mounting the stand support ..................................................................46
2.4.9 Installing the collection trough...............................................................47
2.4.10 Sample racks.........................................................................................47
2.4.11 Mounting the safety shield ....................................................................48
2.5 Start-up.......................................................................................... 49
3 Operation 51
3.1 Operating principles..................................................................... 51
3.1.1 Display ...................................................................................................51
3.1.2 Instrument dialog...................................................................................52
3.1.3 Data input ..............................................................................................54
3.1.4 Text input ...............................................................................................55
3.2 Configuration ................................................................................ 57
3.2.1 Miscellaneous........................................................................................57
3.2.2 Tower settings .......................................................................................59
3.2.3 Rack definitions .....................................................................................61
3.2.4 Dosing units...........................................................................................64
3.2.5 RS232 settings.......................................................................................65
3.3 Composition of a method............................................................. 66
3.3.1 Run sequences and method parameters .............................................66
3.3.2 Sample Processor settings ...................................................................68
3.3.3 Stirrer settings........................................................................................69
3.3.4 Dosing device settings ..........................................................................70
3.3.5 Behavior during timeout ........................................................................71
3.3.6 Manual stop settings .............................................................................72
3.4 Commands.................................................................................... 74
3.4.1 Sample Processor commands..............................................................74
3.4.2 Switching components..........................................................................77
3.4.3 Dosing device control............................................................................78
3.4.4 Communication commands..................................................................80
3.4.5 Auxiliary commands ..............................................................................84
3.5 Managing methods....................................................................... 87
3.5.1 User-defined methods...........................................................................87
3.5.2 POWERUP method................................................................................88
3.6 Run control ................................................................................... 89
3.7 Sample racks ................................................................................ 90
IV Metrohm Sample Processor
3.7.1 Metrohm standard sample racks ..........................................................90
3.7.2 Magnet codes........................................................................................91
3.7.3 Rack data...............................................................................................92
3.8 Dosing and liquid handling.......................................................... 95
3.8.1 Dosimats and Dosinos ..........................................................................95
3.8.2 Liquid handling functions ................................................................... 100
3.8.3 The DOS command............................................................................ 101
3.8.4 Pictograms.......................................................................................... 101
3.8.5 Liquid handling functions in detail...................................................... 102
3.8.6 Pipetting equipment............................................................................ 105
3.8.7 Pipetting procedure ............................................................................ 105
3.8.8 Preparing the Dosing unit................................................................... 106
3.8.9 Pipetting .............................................................................................. 106
3.9 The Remote interface ................................................................. 109
3.9.1 Output lines......................................................................................... 109
3.9.2 Input lines............................................................................................ 109
3.9.3 SCN command ................................................................................... 110
3.9.4 CTL command .................................................................................... 110
3.9.5 Manual stop options ........................................................................... 111
3.10 LEARN mode............................................................................... 112
3.10.1 Setting lift and robotic arm positions.................................................. 112
3.10.2 Rack adjustment................................................................................. 113
3.10.3 Parametrizing sequence commands ................................................. 113
3.11 TRACE function .......................................................................... 114
3.12 Disabling keypad functions ....................................................... 114
3.12.1 Disable whole keypad......................................................................... 114
3.12.2 Disable configuration.......................................................................... 115
3.12.3 Disable parameter .............................................................................. 115
3.12.4 Disable method storage functions ..................................................... 115
3.12.5 Disable display.................................................................................... 115
3.13 786 Swing Head settings ........................................................... 116
4 Service, maintenance, errors 119
4.1 Service......................................................................................... 119
4.1.1 Running time meter............................................................................. 119
4.2 Care and maintenance ............................................................... 119
4.3 Error messages .......................................................................... 120
5 GLP validation – diagnosis 122
5.1 Validation / GLP .......................................................................... 122
5.2 Initializing the working memory ................................................ 123
Metrohm Sample Processor V
6 Annex 125
6.1 Technical data............................................................................. 125
6.1.1 Keypad.................................................................................................125
6.1.2 Interfaces ............................................................................................. 125
6.1.3 MSB connections ................................................................................125
6.1.4 Pumps and pump connections...........................................................125
6.1.5 Swing Head connection ......................................................................126
6.1.6 Lift ........................................................................................................126
6.1.7 Turntable..............................................................................................126
6.1.8 Stirrer connection (DIN socket) ...........................................................126
6.1.9 Mains connection ................................................................................126
6.1.10 Safety specifications............................................................................126
6.1.11 Electromagnetic compatibility (EMC)..................................................126
6.1.12 Ambient temperature...........................................................................127
6.1.13 Dimensions and materials...................................................................127
6.2 Standard methods ...................................................................... 128
6.2.1 Titrino ...................................................................................................129
6.2.2 PIP ext ..................................................................................................130
6.2.3 KF_ext. .................................................................................................132
6.2.4 pH_cal..................................................................................................134
6.2.5 Std_add ...............................................................................................135
6.3 Standard equipment ................................................................... 137
6.3.1 Metrohm Sample Processor:...............................................................137
6.3.2 Sample racks and sample beakers ....................................................149
6.3.3 786 Swing Head ..................................................................................153
6.3.4 Connection cables...............................................................................157
6.3.5 Optional accessories and additional devices .....................................158
6.3.6 Electrodes for automation ...................................................................161
6.4 Warranty and conformity.......................................................... 1621
6.4.1 Warranty.............................................................................................1621
6.4.2 Declaration of Conformity (778 Sample Processor) .........................1632
6.4.3 Declaration of Conformity (789 Robotic Sample Processor XL) ......1643
6.4.4 Quality Management Principles ........................................................1654
7 Index 1665
VI Metrohm Sample Processor
List of Illustrations
Fig. 1 System components ........................................................................................................5
Fig. 2 Overall view......................................................................................................................7
Fig. 3 Rear view .........................................................................................................................8
Fig. 4 Connection strip...............................................................................................................9
Fig. 5 Magnet sensor for rack code...........................................................................................9
Fig. 6 Beaker sensor on the tower ...........................................................................................10
Fig. 7 Sensor on a robotic arm ................................................................................................10
Fig. 8 Accessories ...................................................................................................................11
Fig. 9 Keypad...........................................................................................................................13
Fig. 10 Safety Shield (example shown: 6.2751.0xx for transfer robotic arm) ...........................24
Fig. 11 Mounting the Swing Head .............................................................................................27
Fig. 12 Robotic arm with limiting screw .....................................................................................28
Fig. 13 Mounting the robotic arm ..............................................................................................29
Fig. 13 MSB connections...........................................................................................................30
Fig. 14 Remote cable.................................................................................................................31
Fig. 15 RS232 connections........................................................................................................37
Fig. 16 Distributor piece.............................................................................................................40
Fig. 17 Attaching the tubing.......................................................................................................41
Fig. 18 Macro titration head.......................................................................................................42
Fig. 19 Micro titration head ........................................................................................................42
Fig. 20 Robotic arm with titration accessories ...........................................................................43
Fig. 22 Transfer robotic arm with pipetting accessories............................................................44
Fig. 23 Transfe r robotic arm with double-hollow needle...........................................................45
Fig. 24 Spray nozzles.................................................................................................................45
Fig. 25 741 Magnetic stirrer .......................................................................................................46
Fig. 24 Stand support ................................................................................................................46
Fig. 25 Collection trough............................................................................................................47
Fig. 26 Attaching a sample rack ................................................................................................47
Fig. 27 Sample rack for XL models............................................................................................48
Fig. 28 Mounting the safety shield.............................................................................................48
Fig. 29 Safety shield for Swing Heads.......................................................................................48
Fig. 30 Dialog arrangement .......................................................................................................53
Fig. 31 Text input .......................................................................................................................56
Fig. 32 800 Dosino with Dosing units ........................................................................................95
Fig. 33 Dosing unit from below..................................................................................................96
Fig. 34 Dosing unit - ports .......................................................................................................100
Fig. 35 Remote interface..........................................................................................................125
Tables
Table 1 Model versions (1 tower) .................................................................................................3
Table 2 Model versions (2 towers)................................................................................................4
Metrohm Sample Processor VII
VIII Metrohm Sample Processor
1.1 Instrument description
1 Introduction
This section offers you a first overview of the Metrohm Sample Processors. All the information applies to both the 789 Robotic Sample Processor XL and the 778 Sample Processor. You are informed about how you
can use these versatile instruments and are introduced to the most important parts and controls.
1.1 Instrument description
1.1.1 Field of application of the Metrohm Sample Processors
The Metrohm Sample Processors are very versatile instruments intended exclusively for use in factories and laboratories, where they
cover a wide range of applications. In this way they provide an indispensable service wherever large series of samples have to be processed, no matter whether in the titration, measurement or liquid
handling sectors.
As a result of the extensive communication possibilities you can work
via the parallel Remote and serial RS232 interface not just with the wide
range of Metrohm titrators, measuring instruments and dosing devices,
but you can also work with any other instruments that have a suitable
communications interface; these can be controlled by or control the
Sample Processor. These abilities mean that they are predestined for all
imaginable automation tasks in a modern laboratory, even within highly
integrated laboratory data systems.
Despite their comprehensive range of commands and the numerous
possible configurations, the Metrohm Sample Processors offer an uncomplicated type of operation that is also suitable for routine work as a
result of the possibility of managing user-defined methods.
The standard methods supplied with the instruments can be used for
routine tasks without any further fuss. After a short familiarization period
the user can alter them to meet any particular requirements and store
them in the instrument. This means that, apart from routine work,
Metrohm Sample Processors can also be used for demanding special
applications.
The run sequences for processing the individual samples are freely definable within wide limits. The same applies to the start sequence and
Metrohm Sample Processor, Introduction 1
1.1 Instrument description
final sequence, which have to be carried out once before the start of a
sample series or once after it has been completed. This offers many
advantages, particularly for titrations. The electrode can be conditioned
before the first titration or subjected to a special rinsing process.
A learn mode is available for creating run sequences and, with its help,
command parameters can be set in manual operation.
Exchangeable standard sample racks are available for many sizes of
beakers and test tubes. Freely selectable "special beaker" positions can
be defined for each rack. These are then used for including rinsing or
conditioning beakers, which can be addressed in any part sequence,
on the rack.
By extending the system with a 786 Swing Head the number of samples
to be processed on a rack can be considerably increased. The robotic
arm of the 786 Swing Head allows any point on a sample rack to be
addressed. This means that the number (max. 999 rack positions) and
arrangement of the samples is virtually unlimited. On request we can
supply customer-specific special racks for individual requirements.
Freely definable position tables can be loaded via the RS232 interface
and suitable PC software for the configuration of special racks.
2 Metrohm Sample Processor, Introduction
1.1 Instrument description
1.1.2 Instrument versions
Variously equipped Metrohm Sample Processors models are available:
• All versions of the 789 Robotic Sample Processor XL are suitable
for sample racks of up to 48 cm diameter.
• All versions of the 778 Sample Processor are suitable for sample
racks of up to 42 cm diameter.
Model 2.789.0010
Model 2.778.0010
1 tower with 1 pump
+ 1 ext. pump connection
+ 1 stirrer connection
+ 1 Swing Head connection
Chassis with 3 MSB sockets
for dosing devices and/or
stirrers
+ Remote connection
(25-pin)
+ RS232 connection (9-pin)
+ keyboard connection
Model 2.789.0020
Model 2.778.0020
1 tower with 2 pumps
+ 1 stirrer connection
+ 1 Swing Head connection
Chassis with 3 MSB sockets
for dosing devices and/or
stirrers
+ Remote connection
(25-pin)
+ RS232 connection (9-pin)
+ keyboard connection
Model 2.789.0030
Model 2.778.0030
1 tower without pumps
+ 2 ext. pump connections
+ 1 stirrer connection
+ 1 Swing Head connection
Chassis with 3 MSB sockets
for dosing devices and/or
stirrers
+ Remote connection
(25-pin)
+ RS232 connection (9-pin)
+ keyboard connection
Table 1 Model versions (1 tower)
Metrohm Sample Processor, Introduction 3
1.1 Instrument description
Model 2.789.0110
Model 2.778.0110
2 towers with 2 pumps
+ 2 ext. pump connections
+ 2 stirrer connections
+ 2 Swing Head connections
Chassis with 3 MSB sockets
for dosing devices and/or
stirrers
+ Remote connection
(25-pin)
+ RS232 connection (9-pin)
+ keyboard connection
Table 2 Model versions (2 towers)
Model 2.789.0120
Model 2.778.0120
2 towers with 4 pumps
+ 2 stirrer connections
+ 2 Swing Head connections
Chassis with 3 MSB sockets
for dosing devices and/or
stirrers
+ Remote connection
(25-pin)
+ RS232 connection (9-pin)
+ keyboard connection
Model 2.789.0130
Model 2.778.0130
2 towers without pumps
+ 4 ext. pump connections
+ 2 stirrer connections
+ 2 Swing Head connections
Chassis with 3 MSB sockets
for dosing devices and/or
stirrers
+ Remote connection
(25-pin)
+ RS232 connection (9-pin)
+ keyboard connection
4 Metrohm Sample Processor, Introduction
1.2 Sample Processors as part of a system
1.2 Sample Processors as part of a system
741 Magnetic
Stirrer
772 Pump Unit
Titrinos
781 pH/Ion Meter Metrohm781 pH/Ion Meter Metrohm
pH Meter / Ion Meter
756/831
756 KF
Coulometer
DC
731
AC
Relay Box
731 Relay Box
711 Liquino
711 Liquino
786 Swing Head*
772 Pump
Remote
Keypad
PC
COM 1
RS 232
786 Swing Head**
MSB
RS 232
801 Stirrer
804 Titation Stand
Printer
TiNet
PC
2.x
USB
COMx
COM 2
LPT 1
COM 2
Personal
Computer
• Titrinos
• pH Meter
• Coulometer
• other
Metrohm instruments
• other manu-
• Titrinos
• pH Meter
facturers instruments
• Coulometer
• other Metrohm instruments
• balance
• instruments from
other manufacturers
MSB
802 Rod Stirrer
823823
800
800
800
800
Dosino
Dosino
Dosino
Dosino
800 Dosino
805 Dosimat
700
700
Dosino
Dosino
Dosino
Dosino
700 Dosino
685 Dosimat
823 Membrane
Pump Unit
805 Dosimat805 Dosimat
700
700
685 Dosimat
786 Swing Head
809 Titrando809 Titrando808 Titrando808 Titrando
• other Metrohm
instruments
* with titration-robotic arm
** with transfer-robotic arm
Fig. 1 System components
Titrandos
(6.2148.010 Remote Box
required)
Metrohm Sample Processor, Introduction 5
1.3 Information about these Instructions for Use
1.3 Information about these Instructions for Use
1.3.1 Please note
Please read through these Instructions for Use carefully before you
start to use the Sample Processor. The instructions contain information
and warnings that must be observed by the user in order to guarantee
the safe use of the instrument.
1.3.2 Additional documents
• Quick Reference 8.789.1013 for the Metrohm Sample Processors
• Operating Tutorial 8.789.1023 for the Metrohm Sample Processors
• Technical Reference 8.789.1033 for the Metrohm Sample Proces-
sors
1.3.3 Notation and pictograms
The following notation and pictograms are used in these Instructions for
Use:
Location Menu item, parameter or input value
<OK> button, key
Danger
This symbol indicates a possible risk of death or injury to
the user if the instructions are not followed correctly.
Warning
This symbol indicates a possible risk of damage to the instruments or their components if the instructions are not followed correctly.
Attention
This symbol indicates important information. Read the information provided before you continue.
Remarks
This symbol indicates additional information and tips.
6 Metrohm Sample Processor, Introduction
1.4 Parts and controls
1.4 Parts and controls
1.4.1 Overall view
1
Safety information
Safety shield 2 must always be in position before the Metrohm Sample
Processor is used.
5
6
2
3
4
Fig. 2 Overall view
7
8
9
10
11
Guide chain
1
Safety shield/Splash protection
2
Sample rack
3
Stirrer rail
4
Splash protection fixing
5
Metrohm Sample Processor, Introduction 7
6
7
8
9
10
11
Splash protection guide
Titration head
Lift
Tower
Beaker sensor
Chassis
1.4 Parts and controls
1.4.2 Rear view
This illustration shows the rear view of the standard model 2.778.0010 with
one tower, one membrane pump and one connection for an external pump.
12
13
Pump 1
17
Distributor block
12
Membrane pump
13
PTFE tubing
14
Solenoid valve
15
Warning: Biohazard
a
See Section
14
15
Swing
16
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MSB2
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Fig. 3 Rear view
1.8.3 Personal protection
Head
Remote
RS 232
MSB3
16
17
18
19
b
Ext.
Pump 2
18
19
S: 115 VA
U: 100 - 240 V f: 50 - 60 Hz
Stirrer connection (Tower 1)
For 802 Rod Stirrer or
741 Magnetic Stirrer
Connection strip
Pump connection M8 (external)
Connection socket for the
786 Swing Head
Warning: Resistance to chemicals
See section
2.4.1 Connecting rinsing
and aspiration equipment
8 Metrohm Sample Processor, Introduction
1.5 Connections
1.5 Connections
The electrical connections are the same for all models of the Metrohm
778/789 Sample Processor series.
21
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Mains switch
20
Keyboard connection
21
MSB connections MSB1 … MSB3
22
Metrohm Serial Bus
Connection of dosing devices and stirrers
Remote connection (25-pin)
23
22
23 24
Remote
MSB3
RS 232
Fig. 4 Connection strip
24
25
26
25
S: 115 VA U : 100 - 240 V f: 50 - 60 Hz
26
Serial RS232 connection (9-pin)
Mains connection
Type plate
1.5.1 Sensors of the Sample Processor
Magnet holder
Magnet
sensor
Fig. 5 Magnet sensor for rack code
Rack sensor
The magnet sensor for recognizing
the individual rack code is located beneath the turntable of the Sample
Processor. The magnet code of a
rack can only be read in when the
rack is in the initial position. The magnet holder must be positioned directly
above the sensor.
For this reason the Sample Processor
should be initialized each time that a
rack is changed with the <RACK>
key.
Metrohm Sample Processor, Introduction 9
1.5 Connections
/
k
Optical beaker sensor
Each tower of a Metrohm Sample
Splash protection
Safety shield
Beaker sensor
Sample rac
Fig. 6 Beaker sensor on the
tower
Processor is equipped with a beaker
sensor that detects the presence of
a beaker in front of the tower. With
this infrared sensor beakers made
from different materials can be detected, provided that they are located in the correct position in front
of the tower and the beaker sensor
'Tower' has been selected in the
rack definition. This "Beaker test" is
carried out after each MOVE command (i.e. each rotation of the rack).
The beaker sensor on the tower can
only be used with single-row sample
racks.
Tactile robotic arm sensor
Robotic arms with piezo sensors
may be used with multi-row racks.
The sensor is activated, when the lift
is run to work position and makes
physical contact with a sample
beaker.
Piezo sensor
Fig. 7 Sensor on a robotic arm
10 Metrohm Sample Processor, Introduction
1.6 Accessories
k
1.6 Accessories
Robotic arm with
titration head
786 Swing Heads
Stand support
Sample rac
Robotic arm for
sample transfer
Fig. 8 Accessories
With suitable accessories a Sample Processor can be extended to form
a comprehensive automated system. Depending on the tasks to be
carried out, various standard components or even custom-made special parts can be used. Please consult the list of accessories on page
137ff.
Sample racks
Custom-made racks for various vessel sizes with any arrangement of
rack positions can also be supplied in addition to the standard racks.
786 Swing Head with robotic arm
The use of multi-row sample racks or external titration cells requires the
use of a 786 Swing Head. This motor drive, which is mounted on the lift
of one of the Sample Processor towers, can move different types of robotic arm. Various types of standard robotic arms with accessories for
titrating on the sample rack or for sample transfer to an external titration
cell are available.
Stand support
If an external titration cell is to be used then we recommend the use of
a stand support. The stand support can accommodate a magnetic stirrer (e.g. model 801) and, with a support rod, enables you to attach a titration cell or other accessories.
Metrohm Sample Processor, Introduction 11
1.6 Accessories
Swing head with tactile piezo sensor
When using a multi-row rack and a 786 Swing Head, a robotic arm with
a touch-sensitive piezo sensor may be used. With that kind of sensor
the presence of a sample beaker can be detected reliably.
Robotic arm for removing covers
Whenever covered sample containers are required (e. g. with volatile
samples) the lids can be removed by a special robotic arm (so called
Dis-Cover) with magnetic contact before the sample treatment. Special
lids are available for this purpose.
Accessory set for sample transfer
For pipetting samples into external titration cells an accessory set
(6.5619.000) is available, comprising all necessary parts.
12 Metrohm Sample Processor, Introduction
1.7 The keypad
1.7 The keypad
Controller
********
PUMP---- STIR----
TOW ER 1 TOW ER 2 LEAR N
CONFIG PARAM
HOME END
NEXT
TOWER
counter
USER
METHOD
PREV
RESET
1/12
ready
-
SAMPLE MOVE LIFT
PUMP STI R DO S
SCAN CTRL WA IT
Met r ohm
INSERT
DELETE
6.2142.040
SELECT
QUIT ENTER
CLEAR
DEF
LEARN
HOLD
PRI NT
+
STOP
<
RACK
-
START
>
Fig. 9 Keypad
Below the 2-line display there are three LEDs. The two LEDs 'TOWER 1'
and 'TOWER 2' indicate the tower that is currently active. The LED
'LEARN' lights up when the learn mode is activated.
Most keys have two functions, depending on whether the Sample Processor is in the normal operating mode or in the editing mode.
Selection menus can be accessed with the upper row of keys (<CON-
FIG>, <PARAM>, <USER METHOD>). The other keys on the left-
Metrohm Sample Processor, Introduction 13
1.7 The keypad
hand side of the keypad are used for navigation in the menus or for altering parameters. For entering parameters the numerical block on the
right-hand side of the keypad is also available.
The lowest row of keys (<HOLD>, <STOP>, <START>) are used
for the direct control of a method sequence.
1.7.1 The display
The display consists of two lines each with 24 characters.
The first line is used as the title line, in which the current method and
the sample counter count are shown. In the editing mode the menu title
appears here.
The second line is used as the status line, which shows specific activities depending on the operating status. In the editing mode it is used as
the input line.
Normal condition
Method name
Pump status
Sample counter
******** counter 1/12
PUMP--++STIR+---- ready
Stirrer status
Method sequence
Running sequence
******** counter 2/12
START 03 WAIT 11 s
Current command with line number
Editing mode
Menu line or command
Menu title
>Sample sequence
1 MOVE 1 : Sample
st
1
parameter
If the Sample Processor is included in a computer-controlled automation system and is completely controlled via the RS232 interface then it
may be advisable to switch off the display. This can be done in the
setup menu of the Sample Processor, see p.
Instrument status
Parameter
nd
2
parameter
114.
14 Metrohm Sample Processor, Introduction
1.7 The keypad
1.7.2 The keys
The menu keys
The <Config> key opens the selection menu for the configuration of
CONFIG
the Sample Processor.
The <PARAM> key opens the selection menu for editing the run se-
PARAM
quences and method parameters.
The <User Method> key opens the selection menu for opening, sav-
USER
METHOD
ing and deleting default or user-defined methods.
Lift operation and sample positioning keys
With the <> and <> keys the lift of the currently active tower can
be moved up and down respectively. The lowest possible lift position
is defined by the configuration parameter 'max. stroke path'.
In the editing mode the arrow keys <> and <> are used
for navigation in the particular menu or submenu.
HOME
NEXT
TOWER
SELECT
END
PREV
With the <HOME> key the lift of the currently active tower is returned
to the rest position (0 mm), i.e. to the uppermost stop.
<END> moves the lift to the predefined working position (see p.
In the editing mode the <HOME> and <END> keys move to
the first and last line of the menu or submenu respectively.
With the < NEXT> and < PREV> keys the sample rack can be
rotated forward or backward by one position. The beaker positions
depend on the active lift. If necessary, the lift (or both lifts) are automatically raised to the shifting position. When the rack position has
been reached a robotic arm which may be mounted will automatically
be directed to the corresponding rack position.
In the editing mode the arrow keys <> and <> are
used for navigation in a menu line.
Most functions for manual operation apply specifically to a single
tower. With the 2-tower models the <SELECT/TOWER> key can be
used to switch between the towers. The currently active tower is indicated by the TOWER 1 or TOWER 2 LED. The following commands
or keys refer to the active tower: MOVE, <>, <> , LIFT, <>,
<>, <HOME>, <END> and <PUMP>.
During data input the <SELECT> key is used to select a pre-
defined entry from a selection list.
61).
Metrohm Sample Processor, Introduction 15
1.7 The keypad
Editing and sequence control
When editing a method sequence the <INSERT> and <DELETE>
INSERT DELETE
keys are used to insert or delete a command line.
RESET
CLEAR
QUIT
ENTE R
Command keys
SAMPLE
7
MOVE
8
The <CLEAR/RESET> key is used to initialize the Sample Processor
and dosing devices. This corresponds to the switching-on process.
During data input the <CLEAR/RESET> key is used to de-
lete an entry or to reset the default value. In text entry mode
the last character is deleted.
During a method sequence the <QUIT> key can be used to terminate the command which is currently being carried out. The following
command is executed.
During data input the <QUIT> key is used to terminate an en-
try. During navigation in a menu the <QUIT> key is used to
exit the active (sub)menu and select the next highest menu
level.
During data input the <ENTER> key is used to accept the entry.
The <SAMPLE> key is used to set the current sample position. This
has to be done before a sample series is run.
At the start of a method this position is assumed to be the first sample
in a series. If no sample position has been set then the Sample Processor will select rack position 1.
With <MOVE> a vessel or a particular rack position can be moved to
the active tower or a robotic arm can be swung to an external position.
The <SELECT> key is used to select the tower.
As well as the actual sample beaker a maximum of 16 possible special beakers can also be defined. A particular rack position can be
moved to directly by entering the position number (with the numerical
keys).
The direction and speed of rotation can be altered in the parameter
menu or with the <DEF> key.
Important:
For safety reasons it is only possible to rotate the sample rack when
the lift or both lifts are located in the shifting position or above it. During a rack rotation the lift (or both lifts) are automatically first raised to
the predefined shift height.
16 Metrohm Sample Processor, Introduction
1.7 The keypad
LIFT
Raises or lowers the lift of the active tower. The predefined lift positions (working position, rest position, rinsing position, shifting position,
9
special position) can be selected with the <SELECT> key. They can
be entered and saved separately for each rack in the configuration
menu.
As well as the predefined lift positions it is also possible to enter absolute lift positions in mm via the numerical keys.
In the 2-tower models the tower can be selected with <SE-
LECT/TOWER>.
PUMP
The <PUMP> key is used for switching the pumps 1 or 2 of the active tower on and off. By entering the pump number (1 or 2) the condi-
4
tion of the corresponding pump will be switched, i.e. if the pump is
switched off it will be switched on and vice versa. With Sample Processor models that have no pump or only one built-in membrane pump
the selected pump connection will be switched on or off.
The status of all pumps is shown in the display (e.g.
PUMP–+–+; +
means switched on, - means switched off).
Example:
PUMP on/off No. ? <2> Display: PUMP -+--
PUMP on/off No. ? <2> Display: PUMP ----
In this case pump 2 is switched on and off.
Under <PARAM>,
>manual stop you can define whether the pumps
should be switched off with the <STOP> key or not.
STIR
The <STIR> key is used for controlling the stirrers. A stirrer can be
switched on permanently or switched on for a given period and then
5
switched off again. The <SELECT> key is used to select both the
stirrer and the function. The current status of the stirrer is shown directly in the display.
Example:
STIR: T1 : ON s Display: STIR +- (+=on -=off)
STIR: MSB2 : 10 s Display: STIR 10 s
In this case in the first line the stirrer at tower 1 is switched on. The stirrer is selected with the <SELECT> key. As can be seen in the sec-
ond line, the duration of the stirring process can also be entered.
The stirring rate can be set for each stirrer in the parameter menu or
with the <DEF> key.
Under <PARAM>,
>manual stop you can define which stirrers can
be switched off with the <STOP> key.
DOS
The <DOS> key is used to control the connected dosing devices.
Both positive and negative volumes can be dosed. Negative volumes
6
are used for aspirating liquids, e.g. during pipetting.
As well as entering the volume to be dosed (with the numerical keys),
Metrohm Sample Processor, Introduction 17
1.7 The keypad
<SELECT> can also be used to select additional functions:
- Filling the dosing or exchange unit (fill)
- Initializing the escange of a Dosing unit (release)
- Preparing the tubing systems and cylinder (prep.)
- Emptying the tubing system and the dosing cylinder (empty)
- Ejecting the cylinder contents (Eject)
- Driving the piston to the max. volume
- Compensating for the play between piston and spindle (compen.)
- Valve switching (port)
The first parameter of the DOS command stands for the number of the
dosing instrument (1…3, * = all) and the Dosino port (e. g. 1.1 stands
for Dosino 1, port 1), the second parameter for the function or the volume to be dosed.
Example:
DOS: 2.1 <ENTER> 4.51 ml <ENTER>
DOS: 2.* <ENTER> <SELECT> ... fill <ENTER>
The dosing and filling rates can be set in the parameter menu or with
the <DEF> key.
SCAN
Shows the incoming signals or data from the Remote or the serial
RS232 interfaces.
1
This function is used for checking the data communication with connected devices.
The first parameter shows the selected interface. The second parameter shows the signals or data that are received directly.
If the parallel Remote interface (Rm) is selected then the signal states
of the incoming Remote lines are shown in binary form (1=line active,
0=line inactive).
If the serial RS232 interface (RS) is selected then the data string received via this interface will be shown (14 characters per line).
Example (Remote interface):
SCN:Rm :00000001
In this case the Ready line (Remote line input 0) of a connected Titrino is set.
CTRL
Controls external devices via the Remote or RS232 interface.
The first parameter sets the interface (<SELECT>). The second pa-
2
rameter defines the status of the lines (Remote lines) or data (RS232
interface) to be outputted via the selected interface.
2nd parameter, for Remote interface
Binary pattern with 14 digits (0, 1 or ∗) for the 14 output lines or prede-
18 Metrohm Sample Processor, Introduction
1.7 The keypad
WAIT
3
DEF
0
DEF settings
DEF
0
DOSRATE
fined binary pattern (<SELECT> selection), e.g.
INIT etc.
START device 1,
2nd parameter, for RS232 interface
Data string with up to 14 alphanumeric characters (any).
The default value "&M;$G" (for starting Metrohm instruments) can be
set with <CLEAR>.
The <WAIT> key has no function in the normal operating condition. It
is used to insert the WAIT command in a run sequence.
The <DEF> key is used to edit various settings for manual operation. Repeated pressing of the <DEF> key is used to select the various settings. In order to change the entry you must first press
<ENTER> and then enter the new value.
Alterations made in this way only apply to manual operation.
Change dosing rate
• The dosing rate in mL/min can be set separately for each dosing
device, see p.
• Syntax:
DOSRATE [dosing device] [dosing rate]
70.
COCKMOVE
DEF
0
FILLRATE
DEF
0
DEF
0
LIFTRATE
Change filling rate
• The filling rate in mL/min can be set separately for each dosing
device, see p.
• Syntax:
FILLRATE [dosing device] [filling rate]
70.
Direction of stopcock rotation
• For each connected Dosino the direction of rotation of the stopcock switching can be defined separately, see p.
• Syntax:
COCKMOVE [Dosing device] [Direction of rotation]
70.
Change lift rate
• The lift speed in mm/s can be set separately for each tower (for 2tower models), see p.
• Syntax:
LIFTRATE [Tower] [Lift rate]
68.
Metrohm Sample Processor, Introduction 19
1.7 The keypad
SHIFTRATE
SWINGRATE
STIRRATE
DEF
0
DEF
0
DEF
0
Change rack rate and direction of rotation
• As well as the speed of rotation of the sample rack in degrees/second the direction of rotation can also be defined.
• Direction of rotation "+" means that the rack always rotates coun-
terclockwise, i.e. in increasing rack position sequence, Direction
of rotation "–" means clockwise, i.e. decreasing sequence.
• Direction of rotation
shortest possible path for a rack rotation, see p.
• Syntax:
SHIFTRATE [Direction of rotation] [Rotation rate]
auto: the Sample Processor itself selects the
68.
Change swing rate
• The swing rate in degrees/s of a robotic arm can be set separately for each connected 786 Swing Head, see p.
• Syntax:
SWINGRATE [Tower] [Swing rate]
68.
Change stirring rate
• The stirring speed can be controlled separately for each stirrer
(rod or magnetic stirrer), see p.
• Syntax:
STIRRATE [Stirrer] [Stirrer rate]
69.
20 Metrohm Sample Processor, Introduction
1.7 The keypad
Auxiliary commands
PRINT
<
.
RACK
>
-
*
The <PRINT> key is used to print out a report. The following can be
selected: parameter report (method), configuration report, list of
stored methods, all reports.
The type of report can be selected with <SELECT>.
e. g.
Print: config
The selection of the printer type and the settings of the RS232 interface must be made in the configuration menu under
tings, see p. 37.
>RS232 Set-
With the <RACK> key the sample rack can be initialized. The connected peripheral devices (e.g. Dosimats, Dosinos) are not affected
by this.
The sample rack and lift (both lifts in 2-tower versions) are moved to
the zero position and automatic rack recognition is carried out.
Metrohm Sample Processor, Introduction 21
1.7 The keypad
Sequence control
The <START> key starts a method. A start is only possible when the
START
Sample Processor is in the normal operating condition, i.e. when the
display shows
ready.
If <START> is activated after an interruption (<HOLD>, see below),
then the sequence continues with the next command.
The <START> can also be used to carry out a single command line
in a run sequence (TRACE function), see p.
114.
The <STOP> key ends a method.
STOP
If a sample series is stopped manually with <STOP> then the final
sequence of a method will not be carried out. When the <STOP> key
is pressed the functions listed in the parameter menu under
stop will be carried out.
>manual
LEARN
HOLD
The <HOLD> key interrupts a method sequence.
Connected peripheral devices (Titrinos, etc.) will not be stopped
automatically. Only the method sequence will be interrupted. In the
HOLD condition a method can be completely terminated with
<STOP> or continued with <START>.
After an error message in the method sequence the Sample Processor switches automatically to the HOLD condition after <QUIT>.
22 Metrohm Sample Processor, Introduction
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