Alfalaval UltraPure analogue User manual

Instruction manual
Weighing system UltraPure analogue
Applies to:
Program no.: MCE2529.STD.091103.1
Document no.: 1103mu2029-2010-1.DOC
Date: 2009-11-09
Rev.: 1
Instruction manual no.: IM-TE91K010-EN1

Instruction Manual IM-TE91K010-EN1 Page 1
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
1) CONTENTS
1) CONTENTS ...................................................................................................................................................................1
2) INTRODUCTION..........................................................................................................................................................3
2.1 Introduction...............................................................................................................................................................3
3) MCE2010 DESCRIPTION.............................................................................................................................................4
4) USER INTERFACE.......................................................................................................................................................6
4.1 Display, lamps and keyboard....................................................................................................................................6
4.2 Display modes...........................................................................................................................................................7
4.2.1LoAd mode .................................................................................................................................................7
4.2.2OutPut mode................................................................................................................................................7
4.2.3PASS mode .................................................................................................................................................7
4.2.4ZEro mode...................................................................................................................................................8
4.2.5CAL.L. mode ..............................................................................................................................................8
4.2.6CAL. mode..................................................................................................................................................8
4.2.7CAL.F. mode...............................................................................................................................................8
4.2.8N.Lc. mode..................................................................................................................................................9
4.2.9N.Crn. mode................................................................................................................................................9
4.2.10Int.PEr. mode ..............................................................................................................................................9
4.2.11Unit mode....................................................................................................................................................9
4.2.12dPno mode...................................................................................................................................................9
4.2.13div mode......................................................................................................................................................9
4.2.14SP. 1 and SP. 2 mode..................................................................................................................................9
4.2.15An.SP. mode..............................................................................................................................................10
4.2.16dAc.tSt. mode............................................................................................................................................10
4.2.17LC x mode.................................................................................................................................................10
4.2.18Err.rEg. mode............................................................................................................................................10
4.3 Level alarms............................................................................................................................................................11
4.4 Filtering...................................................................................................................................................................11
4.5 RS485 serial communication ..................................................................................................................................12
5) STATUS CODES.........................................................................................................................................................13
6) ERROR CODES...........................................................................................................................................................14
7) TROUBLE SHOOTING ..............................................................................................................................................15
7.1 Status code indication .............................................................................................................................................15
7.2 Error code indication...............................................................................................................................................15
7.3 Analog output error.................................................................................................................................................15
8) INSTALLATION OF SYSTEM ..................................................................................................................................16
8.1 Checklist during installation ...................................................................................................................................16
8.2 Calibration procedure..............................................................................................................................................17
9) HARDWARE DESCRIPTION ....................................................................................................................................18
9.1 MCE2029 overview................................................................................................................................................18
9.2 Connection of power and load cells........................................................................................................................18
9.3 DIP-switch settings.................................................................................................................................................19
9.4 Light Emitting Diodes.............................................................................................................................................20
9.5 Jumpers...................................................................................................................................................................20
9.6 JTAG connector......................................................................................................................................................20
9.7 RS485 connector.....................................................................................................................................................21
9.8 Analog output connector.........................................................................................................................................21
9.9 Digital output and input connector..........................................................................................................................22
9.10 Hardware Selftest..................................................................................................................................................22
9.11 Update times .........................................................................................................................................................22
10) How to contact Alfa Laval Tank Equipment A/S.......................................................................................................23

Instruction Manual IM-TE91K010-EN1 Page 3
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
2) INTRODUCTION
2.1 Introduction
This document describes the use of a MCE2029 analog module from Alfa Laval, when
they are equipped with the program listed on the front page.
With the program specified on the front page, the MCE2029 analog module is capable of
transmitting the weight for a system with up to 8 load cells as an analog 4-20 mA signal (or
0-10V depending on factory settings). Each load cell is connected to the MCE2029 analog
module through a load cell interface module.
By use of DIP switches it is possible to include one of 3 different FIR filters, which will be
used to filter the weight signal.
IMPORTANT: Load cell modules and instrumentation must be placed outside the
hazardous zone if the load cells are used in hazardous ATEX (Ex) area. Furthermore,
only ATEX certified load cells and instrumentation can be used in ATEX applica-
tions.
Note: The illustrations and specifications contained in this manual were effective at the
date of printing. However, as continuous improvements are our policy, we reserve the
right to alter or modify any unit specification on any product without prior notice or any
obligation.

Page 4 Instruction Manual IM-TE91K010-EN1
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
3) MCE2010 DESCRIPTION
Below the layout of the MCE2010 load cell module is shown. Before using the system the
load cells must be connected to the load cell modules.
Please notice that the load cell and the load cell module MUST be marked
with the same year/serial number. These are printed on the type-plate of the
load cell and on a small sticker placed below the BNC plug on the load cell
module. Load cells and load cell modules MUST NOT be intermixed because
the program in each load cell module is SPECIALLY adapted to one load
cell only (and only this load cell). The load cell module MUST be connected
to exactly the load cell it is intended for and vice versa.
The load cell modules are connected to each other using the supplied cable (10 pole ribbon
cable). The MCE2029 analog module is connected using the same cable.
All switches (SW1) in the load cell module must be at the correct position before use.
Please notice that the switches (SW1) are only read once during power-up. If a change in
the switch setting is necessary the power has to be disconnected and then reconnected (af-
ter 10 seconds). Then the MCE2010 load cell module recognizes the new switch setting.

Instruction Manual IM-TE91K010-EN1 Page 5
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
The switches SW1.1 to SW1.4 are used to select different modes of operation. The below
table is valid for the normal standard software in the load cell module. Unless expressly
specified, the default settings must normally be used.
MCE2010 SW1.1 to SW1.4
SW1 No Default setting Function
1 OFF Baud rate
OFF: 115200
ON: 230400
2 ON Filter, MSB
3 ON Filter, LSB
4 OFF Not used
Switch SW1.5 to SW1.8 are used for address selection. All load cell modules must have
unique addresses ascending from 0 with no gaps unless expressly specified otherwise. No
addresses may be skipped and no addresses may be used by more than one load cell mod-
ule. In systems with 1-8 load cells switch SW1.5 must be set to OFF.
MCE2010 SW1.6 to SW1.8
SW1.5 SW1.6 SW 1.7 SW1.8 Address
OFF OFF OFF OFF 0
OFF OFF OFF ON 1
OFF OFF ON OFF 2
OFF OFF ON ON 3
OFF ON OFF OFF 4
OFF ON OFF ON 5
OFF ON ON OFF 6
OFF ON ON ON 7
The three LED’s are used to indicate the following conditions:
MCE2010 LED’S
TXBB Green Lit whenever the load cell module transmits data. Must be
on/flashing rapidly whenever the system is started.
D1 Yellow No synchronization between load cell modules: One or more load
cells not connected to load cell module or poor connection.
SYNC ERR Red No load cell synchronization: No load cell connected to load cell
module or poor connection.

Page 6 Instruction Manual IM-TE91K010-EN1
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
4) USER INTERFACE
4.1 Display, lamps and keyboard
The MCE2029 analog module is operated using a display, a series of control lamps, 4 DIP-
switches and 5 keys.
The control lamps have the following functions:
TXBB (Green) Lit when communicating with the connected load cell modules.
D1 (Yellow) Lit when a key is activated.
AN.ERR. (Red) Lit when the analog output signal is different from its pro-
grammed value.
The 5 keys have the following functions:
”F” Cyclic change between different display modes etc.
”Up” Increments desired value etc.
”Down” Decrements desired value etc.
”Esc” Regret desired value etc.
”Enter” Accept of selected display value etc. This key must be pressed
in order to accept any change of parameter
The ”F” key can be used to change between different display modes. In a given mode the
display will alternately show ”XXXXXX” and ”YYYYYY”. Here ”XXXXXX” will be a
text indicating the actual mode, while ”YYYYYY” will indicate the actual value belonging
to this mode.
By holding down the ”F” key and then pressing ”Esc” the LoAd” mode is selected.
If during power-on the display shows ”Par.SEt.”this is because parameters have to be set.
The ”F” key can then be used to proceed to “LoAd” mode and the chapter describing
”Err.rEg.” mode can be used for further information.
If at any time the display shows ”-OL-”(OverLoad) or ”-UL-”(UnderLoad) this is be-
cause the actual value to be shown in the display is too large/small.

Instruction Manual IM-TE91K010-EN1 Page 7
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
4.2 Display modes
It is possible to select between the following modes:
MODE FUNCTION
”LoAd” used during normal operation for display of gross weight.
”OutPut” used for display of the actual analog output signal.
”PASS” used during selection of password.
”ZEro” used during zero of the weight indication.
”CAL.L.” used during calibration of the weight indication.
”CAL.” used during calibration of the weight indication.
”CAL.F.” used to calculate the calibrated weight indication.
”n.Lc.” used to indicate number of loadcells.
”n.Crn.” used to indicate number of corners (supporting points).
”Int.PEr.” used to indicate integration period (measurement time).
”Unit” used to set desired weighing parameters (unit).
”dPno” used to set desired weighing parameters (decimal point position).
”div” used to set desired weighing parameters (division).
”SP. 1” used to control digital output 1.
”SP. 2” used to control digital output 2.
”An.SP.” used to indicate weight value for full analog output signal.
”dAc.tSt.” used to test the analog output signal.
”LC x ” used to show loadcell status/signal for loadcell x (0-7).
”Err.rEg.” used to show various error codes.
4.2.1 LoAd mode
This mode is used during normal operation to show the actual gross weight. The weight in-
dication is indicated in gram, kg or ton depending on the selected weighing parameters
(”Unit” , ”dPno” and ”div”). If the MCE2029 analog module detects a situation that re-
sults in a status code indication different from 0, the display will show the status code as “-
xxxx-“ instead of the weight indication, and it will output its maximum value (20mA or
10V) on its analog output for the duration of this situation.
4.2.2 OutPut mode
This mode is used for indication of the actual analog output signal. The analog output sig-
nal is shown in mA/V depending on the hardware configuration of the MCE2029 analog
module.
4.2.3 PASS mode
This mode is used to select password. To avoid unintended change of parameters the mod-
ule is equipped with a password. To change parameters, zero or calibrate the weight indica-
tion from the keyboard the user has to set the actual password so that it equals ”1357”. He-
reafter the ”Enter” key is pressed to accept the value.
Remember to clear the password in the same fashion when done.

Page 8 Instruction Manual IM-TE91K010-EN1
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
4.2.4 ZEro mode
This mode is used during zero of the weight indication (gross weight). The zero should on-
ly be done with an empty and clean weighing platform. The display shows the actual
weight as in ”LoAd” mode. The weight indication is indicated in gram, kg or ton depend-
ing on the selected weighing parameters (”Unit” , ”dPno” and ”div”). If the MCE2029
analog module detects a situation that results in a status code indication different from 0,
the display will show the status code as “-xxxx-“ instead of the weight indication, and it
will output its maximum value (20mA or 10V) on its analog output for the duration of this
situation.
The zeroing is performed by pressing ”Enter”, if the correct password has been selected. A
zeroed and empty system will cause the analog output signal to go to its minimum value
(4mA or 0V). Note that on a MCE2029 analog module running in current configuration,
the analog output signal can go below 4mA for negative weight indications.
The zeroing can also be made using the digital input IN1. Zeroing using the digital input
IN1 can be performed regardless of password value and the selected display mode.
4.2.5 CAL.L. mode
This mode is used during calibration of the weight indication. The display shows the de-
sired calibration load to be used during calibration. The calibration load is indicated in
gram, kg or ton depending on the selected weighing parameters (”Unit” , ”dPno” and
”div”). The calibration itself is performed in ”CAL.” mode.
4.2.6 CAL. mode
This mode is used during calibration of the weight indication. The display shows the actual
gross weight. The weight indication is indicated in gram, kg or ton depending on the se-
lected weighing parameters (”Unit” , ”dPno” and ”div”). If the MCE2029 analog module
detects a situation that results in a status code indication different from 0, the display will
show the status code as “-xxxx-“ instead of the weight indication, and it will output its
maximum value (20mA or 10V) on its analog output for the duration of this situation.
Calibration of the gross weight to match the calibration load entered in ”CAL.L.” mode is
performed by pressing ”Enter”, if the correct password has been selected. The complete
calibration procedure for calibration is described later.
4.2.7 CAL.F. mode
This mode is used during reading/adjustment of the calibration factor. The calibration fac-
tor is changed after each performed calibration and should be noted so that it is possible to
re-establish the calibration. The calibration factor can be changed directly if the correct
password is selected. The calibration factor lays in the interval 104858 to 943718 with
524288 as the standard calibration factor (corresponding to no calibration). By changing
the calibration factor within this interval it is possible to change the weight indication with
±80%. The procedure for calibration is described below.

Instruction Manual IM-TE91K010-EN1 Page 9
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
4.2.8 N.Lc. mode
This mode is used during installation to indicate the number of load cells (1-8) connected
to the MCE2029 module. As an example, the ”n.Lc.” parameter should be 1 in a system
consisting of a three legged tank, where only one corner contains a load cell. Note that
changing the ”n.Lc.” parameter will clear the ”SP. 1” , ”SP. 2” , ”An.SP.” and the
”CAL.L.” parameters. If a change is made to this parameter, it may be necessary to turn
the power off and on for the change to take effect.
4.2.9 N.Crn. mode
This mode is used during installation to indicate the number of corners (supporting points)
(1-8). Note that it is the total number of supporting points including corners supported by
load cells. As an example, the ”n.Crn.” parameter should be 3 in a system consisting of a
three legged tank. Note that changing the ”n.Crn.” parameter will clear the ”SP. 1” , ”SP.
2” , ”An.SP.” and the ”CAL.L.” parameters.
4.2.10 Int.PEr. mode
This mode is used during installation to indicate the integration period (40ms, 100ms,
200ms, 400ms, 1000ms, 2000ms or 4000ms). This determines the time over which the load
cell(s) are sampled to determine a new weight reading, and thereby how often the analog
output signal is updated.
4.2.11 Unit mode
This mode is used during installation to select the desired unit used when presenting
weight indications in the display. The unit can be set to gram, kg or ton. Note that changing
the ”Unit” parameter will clear the ”SP. 1” , ”SP. 2” , ”An.SP.” and the ”CAL.L.” para-
meters.
4.2.12 dPno mode
This mode is used during installation to select the desired decimal point position used
when presenting weight indications in the display. The decimal point position specifies the
number of digits following the decimal point, and it can be selected from a range of prede-
fined values. Note that changing the ”dPno” parameter will clear the ”SP. 1” , ”SP. 2” ,
”An.SP.” and the ”CAL.L.” parameters.
4.2.13 div mode
This mode is used during installation to select the desired resolution used when presenting
weight indications in the display. The resolution (or division) can be selected from a range
of predefined values. Note that changing the ”div” parameter will clear the ”SP. 1” , ”SP.
2” , ”An.SP.” and the ”CAL.L.” parameters.
4.2.14 SP. 1 and SP. 2 mode
This mode is used to set the two set points (SP1 and SP2) that are used for controlling the
two level alarms implemented on digital outputs OUT1 and OUT2 as described later. The
set points are indicated in gram, kg or ton depending on the selected weighing parameters
(”Unit” , ”dPno” and ”div”).

Page 10 Instruction Manual IM-TE91K010-EN1
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
4.2.15 An.SP. mode
This mode is used during installation to indicate the weight value that should result in max-
imum analog output signal (20mA or 10V). The analog set point that results in maximum
analog output signal is indicated in gram, kg or ton depending on the selected weighing pa-
rameters (”Unit” , ”dPno” and ”div”).
4.2.16 dAc.tSt. mode
This mode can be used to test the analog output signal. Once the ”dAc.tSt.” mode is en-
tered the display will show “OFF” indicating that the analog test mode is disabled. To en-
able the analog test mode the ”Enter” key must be pressed.
When the analog test mode is enabled, the display will show an analog test value that is
sent out on the analog output. NOTE that this value overrides the normal analog output
signal (based on the actual gross weight) for as long as the analog test mode is enabled.
When the analog test mode is enabled, it is possible to change the analog test value by us-
ing the ”Up” or ”Down” key. Thus it is possible to set different values from 0mA (or 0V)
to 20mA (or 10V) in increments of 1mA (or 0.5V).
The analog test mode is disabled by pressing the ”Esc” key when still in ”dAc.tSt.” mode.
The analog test mode is also automatically disabled once the ”dAc.tSt.” mode is left by
pressing the ”F” key. Once the analog test mode is disabled, the analog output signal will
be controlled by the actual gross weight once again.
4.2.17 LC x mode
This mode is used to show the status or signal from load cell x. Thus it is possible to read
the status/signal of all connected load cells. If no error is present on the selected load cell,
the display will show the weight indication measured on that load cell. The weight indica-
tion is indicated in gram, kg or ton depending on the selected weighing parameters (”Unit”
, ”dPno” and ”div”). If the MCE2029 analog module detects a situation that results in a
status code indication different from 0 for the selected load cell, the display will show the
status code as “-xxxx-“ instead of the weight indication.
4.2.18 Err.rEg. mode
If the MCE2029 analog module detects an error a corresponding error code can be read in
this mode. If present these errors are normally detected upon power up, causing the
MCE2029 analog module to produce a ”PAr.SEt.” message. In this situation, pressing the
”F” key will cause the module to enter ”LoAd” mode without clearing the error. The error
can then be examined in the “Err.rEg.” mode for further information.
Please refer to the table describing the error codes for the cause and a possible solution.
Please note that these errors differ from the status codes that can be shown in the ”LoAd” ,
”ZEro” and ”CAL.” modes. Also these error codes will NOT result in a maximum signal
(20mA or 10V) on the analog output.

Instruction Manual IM-TE91K010-EN1 Page 11
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
4.3 Level alarms
The 2 digital outputs on the MCE2029 analog module can be used as level alarms.
Set points for the two alarms are set using the ”SP. 1” or ”SP. 2” modes.
The following applies to the two level alarms:
Level alarm 1:
-The alarm is implemented on the OUT1 output.
-The level of activation is selected in the ”SP. 1” mode.
-The alarm is active BELOW SP1.
-The alarm is active if the status code differs from 0.
Level alarm 2:
-The alarm is implemented on the OUT2 output.
-The level of activation is selected in the ”SP. 2” mode.
-The alarm is active ABOVE SP2.
-The alarm is active if the status code differs from 0.
4.4 Filtering
By use of DIP-switches it is possible to include one of 3 different FIR filters, which will be
used to filter the weight signal. Thus it is possible, to send the unfiltered gross weight
achieved over each integration period (Tavg) through one of the following FIR filters, be-
fore the result is displayed and send to the analog output:
SW2.4 SW2.3 No. Taps Frequency Damping
Tavg
40ms Tavg 100ms Tavg 200ms Tavg 400ms Tavg 1000ms Tavg 2000ms Tavg 4000ms
OFF OFF 0 - - - - - - - - -
ON OFF 1 9 6.0 Hz 2.4 Hz 1.2 Hz 0.6 Hz 0.24 Hz 0.12 Hz 0.06 Hz -80dB
OFF ON 2 21
3.0 Hz 1.2 Hz 0.6 Hz 0.3 Hz 0.12 Hz 0.06 Hz 0.03 Hz -80dB
ON ON 3 85
0.75 Hz 0.3 Hz 0.15Hz 0.075Hz 0.03 Hz 0.015Hz 0.0075Hz -80dB
NOTE: With both switches OFF, no filtering is performed.

Page 12 Instruction Manual IM-TE91K010-EN1
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
4.5 RS485 serial communication
The MCE2029 analog module communicates on its RS485 communication channel using
the following serial parameters:
Baudrate: 9600 bps
Data bits: 8
Parity: None
Stop bits: 1
The MCE2029 analog module transmits status and measured gross weight every measure-
ment period on its RS485 channel (9 pole sub-D connector). The format of the transmitted
telegram is:
<Status> , <Gross> <LF> <CR>
where:
-<LF> is a line feed character.
-<CR> is a carriage return character.
-<Status> is the status code as shown in the ”LoAd” menu. This is a 4 charac-
ter long hex number and should be 0000 during normal error free operation.
-<Gross> is the gross weight as shown in the ”LoAd” menu. This is a 6 charac-
ter long value. Note that this field will be 7 characters long if a decimal point
is used.

Instruction Manual IM-TE91K010-EN1 Page 13
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
5) STATUS CODES
Status codes can be shown as a 4 digit hex number (“-xxxx-“) instead of the actual gross
weight in ”LoAd” , ”ZEro” and ”CAL.” modes. If more than one of the status conditions
listed below is present, the status codes are OR’ed together.
CODE
(Hex) CAUSE
0001 Invalid/missing ’sample’ ID
Bad connection between MCE2029 analog module and load cell module.
0002 Load cell timeout
Bad connection between load cell and load cell module.
0004 Load cell not synchronized
Bad connection between load cell and load cell module.
0008 Hardware synchronization error
Cable between load cell modules shorted or disconnected.
0010 Power failure
Supply voltage to load cells is to low.
0020 Overflow in weight calculation
Internal error in load cell module.
0040 Invalid/missing ’latch’ ID
Bad connection between MCE2029 analog module and load cell module.
0080 No answer from load cell module
No data is received from load cell module. This can be caused by the removal of a load cell
module, no power to the module or that the connection between load cell module and
MCE2029 analog module is broken.
0100 Reserved for future use
0200 Reserved for future use
0400 Reserved for future use
0800 No load cell modules answer
Bad connection between MCE2029 analog module and load cell module. Not all telegrams
from MCE2029 analog module are received in load cell module.
1000 Reserved for future use
2000 Reserved for future use
4000 Reserved for future use
8000 Wrong number of load cells
The expected number of load cells found during power-on does not match the number indi-
cated by the ”n.Lc.” parameter. If the ”n.Lc.” parameter setting is correct, it must be ex-
amined that all load cell module addresses are correct.

Page 14 Instruction Manual IM-TE91K010-EN1
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
6) ERROR CODES
Error codes can be shown as a 4 digit hex number (“ xxxx “) in the ”Err.rEg.” mode.
Please note that these error codes are different from the status codes that can be shown in
”LoAd” , ”ZEro” and ”CAL.” modes. If more than one of the error conditions listed be-
low is present, the error codes are OR’ed together.
CODE
(Hex) CAUSE/SOLUTION
0001 Reserved for future use
0002 Invalid calibration factor
The calibration factor was out of range during power-up, or the scale is not cali-
brated yet. Perform a calibration, or manually enter a new calibration factor dif-
ferent from the current, to achieve a valid calibration. Power the system off and
back on to verify the problem has been solved.
0004 Invalid zero
The zero was invalid during power-up, or the scale has not been zeroed yet.
Perform a zero to achieve a valid zero. Power the system off and back on to
verify the problem has been solved.
0008 Reserved for future use
0010 Invalid weighing range parameter(s)
One or more weighing range parameters (”Unit” , ”dPno” and ”div”) were
invalid or haven’t been selected yet. Change all weighing range parameters to
a new value different from their current value. Then change all weighing
range parameters to their desired value. Power the system off and back on to
verify the problem has been solved.
0020 Invalid configuration parameter(s)
One or more configuration parameters (“n.Lc.” , “n.Crn.” , “Int.PEr.” , ”SP.
1” , ”SP. 2” and ”An.SP.”) were invalid or haven’t been selected yet. Change
all configuration parameters to a new value different from their current value.
Then change all configuration parameters to their desired value. Power the
system off and back on to verify the problem has been solved.

Instruction Manual IM-TE91K010-EN1 Page 15
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
7) TROUBLE SHOOTING
7.1 Status code indication
If the MCE2029 analog module detects a situation that results in a status code indication
different from 0, the MCE2029 analog module will output its maximum value (20mA or
10V) on its analog output, and the level alarms will both be active, no matter what the cur-
rent load is. As described earlier the actual status code will then be shown instead of the
actual gross weight in the ”LoAd” , ”ZEro” and ”CAL.” modes. It will then be possible to
use the ”LC x” modes to try and locate the error.
7.2 Error code indication
If the MCE2029 analog module detects an error a corresponding error code can be read in
the ”Err.rEg.” mode as described earlier.
If present these errors are normally detected upon power up, causing the MCE2029 analog
module to produce a ”PAr.SEt.” message. In this situation, pressing the ”F” key will cause
the module to enter ”LoAd” mode without clearing the error. The error can then be ex-
amined in the “Err.rEg.” mode for further information.
Please refer to the table describing the error codes for the cause and a possible solution.
Please note that these errors differ from the status codes that can be shown in the ”LoAd” ,
”ZEro” and ”CAL.” modes. Also these error codes will NOT result in a maximum signal
(20mA or 10V) on the analog output.
7.3 Analog output error
If the build-in DA-converter detects that the analog output signal is different from its pro-
grammed value, the ”AN.ERR.” light emitting diode will be lit. This will for example be
the case if the current-loop is broken in a system where the module is in its current confi-
guration.

Page 16 Instruction Manual IM-TE91K010-EN1
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
8) INSTALLATION OF SYSTEM
8.1 Checklist during installation
During installation of the system the following should be checked/performed:
1) The load cells are mounted mechanically and connected to the MCE2029 analog module using
their corresponding load cell interface module. The load cell addresses are set using the DIP-
switches on the load cell interface modules, so that they forth running from address 0 (0-7).
2) Check that the RS485 channel, the digital I/O and the analog connections of the MCE2029 analog
module are made as described in the hardware description.
3) Select the desired filter using the DIP switches (Sw2.3-Sw2.4). Power is applied.
4) Verify that the green TXBB LED on the MCE2029 analog module is lit and that the TXBB LED’s
on the load cell interface modules are also lit (can flash slightly). Also verify that other LED’s on
the load cell module behave as expected.
5) Verify that no “PAr.SEt.” message is produced at power-up. Upon power-up the MCE2029 analog
module will automatically produce this message if errors are detected, or enter the “LoAd” mode if
no errors are detected. Refer to the chapter describing error codes on how to solve/remove errors.
6) Verify that the red AN.ERR LED on the MCE2029 analog module is OFF.
7) Select “PASS” mode (using the “F” key), set the password to 1357 (using the arrow keys) and ac-
cept the value (using the “Enter” key).
8) Select “n.Lc.” mode and set the number of load cells connected to the MCE2029 module. If a
change is made to this parameter, it may be necessary to turn the power off and on. Remember to
set the password to 1357 once again, if power is turned off and on, and further settings have to be
made.
9) Select “n.Crn.” mode and set the number of corners (supporting points).
10) Select “Int.PEr.” mode and set the desired integration period (40ms, 100ms, 200ms, 400ms,
1000ms, 2000ms or 4000ms).
11) Verify that the MCE2029 analog module has found the correct number of load cells and that no sta-
tus codes (load cell errors) are indicated. The “Lc X” modes may be used to locate the origin of any
errors present.
12) Select proper weighing range parameters using the “Unit” (unit), “dPno” (decimal point position)
and “div” (division) modes. The weighing range parameters should match/reflect the actual weigh-
ing system and its capacity.
13) If the two level alarms implemented on digital outputs OUT1 and OUT2 are to be used set their
controlling setpoints using the “SP. 1” and “SP. 2” modes.
14) Select “An.SP.” mode and set the load corresponding to 20mA (or 10V).
15) Select “ZEro” mode, and with an empty weighing system zero the system by pressing “Enter”.
16) Perform a calibration of the system as described below.
17) Select “OutPut” mode and verify using an instrument that the physical analog output signal be-
haves as expected depending on the actual load. If desired the “dAc.tSt.” mode can be used in ad-
dition to manually generate different analog test signals.
The system is now installed and a final zero can be made before the password is cleared
(set to 0 and press the “Enter” key) and the module is set to “LoAd” mode.

Instruction Manual IM-TE91K010-EN1 Page 17
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
8.2 Calibration procedure
Calibration of the MCE2029 analog module and the connected load cells is made using the
following procedure:
1) Allow calibration by selecting the correct password (1357) in ”PASS” mode.
2) Check that the weighing arrangement is empty and clean.
3) Zero the system using ”ZEro” mode.
4) Check that the weight indication is zero. Zero again if necessary.
5) Place the calibration load on the system. The load should be as close to the maxi-
mum load as possible.
6) Select ”CAL.L.” mode and set the calibration load to match the applied load
7) Select ”CAL.” mode and calibrate the system by pressing the ”Enter” key. Here-
by the calibration factor is changed so that the weight indication matches the ac-
tual load. This is verified in ”LoAd” mode. Note that it is only possible to cali-
brate within an interval of ±80%. If this is not enough, the mechanical part of the
system should be checked, since this is most likely the cause to the problem.
8) Select ”CAL.F.” mode and note the achieved calibration factor, so that the cali-
bration can be re-established later.
9) The system is calibrated and the calibration should be protected by clearing the
password (set to 0). Select ”LoAd” mode and verify that a given load results in a
matching weight indication.
The weight indication can also be calibrated directly by changing the calibration factor in
”CAL.F.” mode. The following relationship between calibrated indication, uncalibrated
indication and the calibration factor applies:
WeightCAL.= [(CALFAC) / 524288] * WeightUNCAL.
Note that the standard calibration factor of 524288 results in no calibration.

Page 18 Instruction Manual IM-TE91K010-EN1
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
9) HARDWARE DESCRIPTION
9.1 MCE2029 overview
The following figure is an overview of the MCE2029 analog module:
9.2 Connection of power and load cells
The connection of power supply and load cells to the MCE2029 analog module is made as
follows.

Instruction Manual IM-TE91K010-EN1 Page 19
Weighing system UltraPure analogue
Version: 2009-11-09, rev.: 1
The 2 pole connector (J6) located above the display on the MCE2029 analog module is
connected to 24VDC. The 2 pole connector (J6) on the MCE2029 analog module has these
connections:
PIN NO. PIN DESIGNATION CONNECTION
1 + +24VDC (Vin)
2 - 0 VDC (GNDin)
IMPORTANT: The used power supply must be stable and free of transients. It may there-
fore be necessary to use a separate power supply dedicated to the weighing system, and not
connected to any other equipment.
The 10 pole connector (J2) located above the display on the MCE2029 analog module is
connected to the 10 pole connectors on the load cell interface modules (MCE2010) using
the supplied ribbon cable with mounted connectors. Through this bus cable the MCE2029
analog module supplies the load cell modules with +24VDC, and data can be transferred
from the load cell modules to the MCE2029 analog module. The 10 pole connector (J2) on
the MCE2029 analog module has these connections:
MCE2029 J2 CONNECTOR FUNCTION
J2.1 – J2.2 RS485-B (DATA- )
J2.3 – J2.4 RS485-A (DATA+)
J2.5 – J2.6 0 VDC (GND)
J2.7 – J2.8 +24VDC
J2.9 – J2.10 I/O line
9.3 DIP-switch settings
The MCE2029 analog module is equipped with a 4 pole DIP-switch block (SW2). The
switches are only read during power-on, and have the following function..
SWITCH FUNCTION
Sw2.1-Sw2.2 Reserved for future use.
Sw2.3-Sw2.4 Filtering
Used to select the desired filter as described in an earlier chapter.