2. Declaration of Conformity..........................................................................................................................5
3.4.1 Desk Type Housing ...........................................................................................................................................8
4.2.1. Power Supply and Grounding..........................................................................................................................10
4.2.2. Standard Load Cell Connection (for FT-11 only) .............................................................................................11
4.2.3. Digital Load Cell Connection (for FT-11D only)...............................................................................................11
6. Setup and Calibration...............................................................................................................................14
6.1.1. Basic Setup Keys on the Frontplate ................................................................................................................14
6.1.2. Entering the Setup and Calibration Menu........................................................................................................14
6.1.3. Exiting the Setup and Calibration Menu ..........................................................................................................14
6.2. Defining the Digital Load cells (for FT-11D only) ....................................................................................15
6.2.1. Digital Load Cell Addressing ...........................................................................................................................15
8.1. Overview about Communication .............................................................................................................22
8.2. Serial Interface and Printer .....................................................................................................................22
8.2.1. Standard Serial Interface Connector (RS232C) ..............................................................................................22
8.2.2. Optional Serial Interface Connector (RS232C, RS485, 20 mA TTY)...............................................................22
8.3.3. Data Structure .................................................................................................................................................28
8.4.3. Data Structure .................................................................................................................................................29
FT-11(D) Technical Manual, Rev. 1.35 November 2010
8.5.3. Data Structure .................................................................................................................................................30
8.6.3. Data Structure .................................................................................................................................................31
9. Other I/O Options......................................................................................................................................32
9.2. Digital I/O Option.....................................................................................................................................33
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 3 of 52
RIGHTS AND LIABILITIES
All rights reserved.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any
means, mechanical, photocopying, recording, or otherwise, without the prior written permission of Flintec GmbH
No patent liability is assumed with respect to the use of the information contained herein. While every
precaution has been taken in the preparation of this book, FLINTEC assumes no responsibility for errors or
omissions. Neither is any liability assumed for damages resulting from the use of the information contained
herein.
The information herein is believed to be both accurate and reliable. FLINTEC, however, would be obliged to be
informed if any errors occur. FLINTEC cannot accept any liability for direct or indirect damages resulting from
the use of this manual.
FLINTEC reserves the right to revise this manual and alter its content without notification at any time.
Neither FLINTEC nor its affiliates shall be liable to the purchaser of this product or third parties for damages,
losses, costs, or expenses incurred by purchaser or third parties as a result of: accident, misuse, or abuse of
this product or unauthorized modifications, repairs, or alterations to this product, or failure to strictly comply with
FLINTEC operating and maintenance instructions.
FLINTEC shall not be liable against any damages or problems arising from the use of any options or any
consumable products other than those designated as Original FLINTEC Products.
NOTICE: The contents of this manual are subject to change without notice.
CAUTION READ this manual BEFORE operating or servicing this equipment. FOLLOW
these instructions carefully. SAVE this manual for future reference. DO NOT allow untrained
personnel to operate, clean, inspect, maintain, service, or tamper with this equipment.
ALWAYS DISCONNECT this equipment from the power source before cleaning or performing
maintenance. CALL FLINTEC ENGINEERING for parts, information, and service.
WARNING ONLY PERMIT QUALIFIED PERSONNEL TO SERVICE THIS EQUIPMENT.
EXERCISE CARE WHEN MAKING CHECKS, TESTS AND ADJUSTMENTS THAT MUST BE
MADE WITH POWER ON. FAILING TO OBSERVE THESE PRECAUTIONS CAN RESULT
IN BODILY HARM.
WARNING FOR CONTINUED PROTECTION AGAINST SHOCK HAZARD CONNECT
TO PROPERLY GROUNDED OUTLET ONLY. DO NOT REMOVE THE GROUND PRONG.
WARNING DISCONNECT ALL POWER TO THIS UNIT BEFORE REMOVING THE
FUSE OR SERVICING.
WARNING BEFORE CONNECTING/DISCONNECTING ANY INTERNAL ELECTRONIC
COMPONENTS OR INTERCONNECTING WIRING BETWEEN ELECTRONIC EQUIPMENT
ALWAYS REMOVE POWER AND WAIT AT LEAST THIRTY (30) SECONDS BEFORE ANY
CONNECTIONS OR DISCONNECTIONS ARE MADE. FAILURE TO OBSERVE THESE
PRECAUTIONS COULD RESULT IN DAMAGE TO OR DESTRUCTION OF THE
EQUIPMENT OR BODILY HARM.
CAUTION OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC SENSITIVE
DEVICES.
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Das bezeichnete Produkt stimmt mit folgenden Vorschriften der Europäischen Richtlinien überein:
This product confirms with the following re gula tions o f the Directive s of the European Community
Richtlinie 2004/108/EG des Europäischen
Parlaments und des Rates vom 15. Dezember 2004
zur Angleichung der Rechtsvorschriften der
Mitgliedstaaten über die elektromagnetische
Verträglichkeit und zur Aufhebung der Richtlinie
89/336/EWG
Richtlinie 2006/95/EG Niederspannungs-Richtlinie
EC-Declaration of Conformity
Bemannsbruch 9
D-74909 Meckesheim
Deutschland / Germany
FT-11D Digital Weight Indicator
Directive 2004/108/EC of the European Parliament and of the
Council of 15th December 2004 on the approximation of the
laws of the Member States relating to electromagnetic
compatibility and repealing Directive 89/336/EEC
Directive 2006/95/EC Low Voltage Directive
Die Absicherung aller produktspezifischen
Qualitätsmerkmale erfolgt auf Basis eines zertifizierten
Qualitätsmanagement-Systems nach DIN ISO 9001.
Diese Erklärung bescheinigt die Übereinstimmung mit
den genannten Richtlinien, beinhaltet jedoch keine
Zusicherung von Eigenschaften.
Folgende Normen werden zum Nachweis der Übereinstimmung mit den Richtlinien eingehalten:
As a proof of conformity with the directives following standards are fulfilled:
EN 61326-1
EN 60950-1
Elektrische Mess-, Steuer-, Regel- und Laborgeräte - EMV-Anforderungen - Teil 1: Allgemeine
Anforderungen (IEC 61326-1:2005)
Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 1: General
requirements (IEC 61326-1:2005)
Einrichtungen der Informationstechnik - Sicherheit - Teil 1: Allgemeine Anforderungen (IEC 609501:2005, modifiziert);
Information technology equipment - Safety - Part 1: General requirements (IEC 60950-1:2005 modified)
All product-related features are assured by a quality
system in accordance with ISO 9001.
This declaration certifies the conformity with the listed
directives, but it is no promise of characteristics.
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 5 of 52
3. Overview
The type FT-11(D) weight indicator is an economic and powerful state-of-the-art instrument. The accurate and
versatile instrument is available in different housings, meeting the industries demand for various environmental
conditions. FT-11(D) is approved by Weights & Measures Authorities for use in Accuracy Class III applications
with up to 10 000 intervals according to OIML R76. It has a large 6 digit LED weight display (red, 20 mm or 14
mm high) with weight status information. With a variety of interface options the FT-11(D) weight indicators are
the perfect fit to weighing systems and process control systems.
3.1 Key Features
FT-11D FT-11
EU Type approved for 10 000 intervals Yes Yes
Single or dual range Yes Yes
Approved sensitivity 0.4 V/e
High internal resolution up to 8 000 000 counts Yes Yes
Display resolution up to 60 000 counts Yes Yes
Maximum conversion rate of 100/s Yes
Adaptive digital filter for fast and stable reading Yes Yes
High resolution display mode Yes Yes
Up to 6 load cells (350 ) or 18 load cells (1100 )
Up to 10 digital load cells (DLC); 16 if externally powered Yes
Automatic eccentricity adjustment Yes
Realtime clock No No
Standard Serial interface RS232C Yes Yes
Integrated AC power supply Yes Yes
Zeroing with one button & Taring with one button Yes Yes
Auto-zero tracking and auto-zero at power-up Yes Yes
Motion detection Yes Yes
Printout in different formats incl. header and footer Yes Yes
Isolated digital inputs / outputs Option Option
Setpoint monitoring (3 setpoints, digital I/O required) Yes Yes
Key lock option to prevent unauthorized access Yes Yes
Yes
Yes
3.2 Available Options and Accessoires
FT-11D FT-11
Alibi memory for up to 149 764 weighing results Yes Yes
Additional serial interface RS232C Yes Yes
Additional serial interface RS232C / 20 mA TTY CL / RS485 Yes* Yes*
Modbus RTU No Yes
Ethernet TCP/IP and Modbus RTU over Ethernet No Yes
Profibus DP-V0 & DP-V1 No Yes
ProfiNet No Yes
CANopen No Yes
Analogue output 0 – 10 V and 4 – 20 mA No Yes
Binary data output (17-bit code) No Yes
Digital inputs / outputs 3x / 3x 3x / 3x
12 V DC (12…17 V DC) power inlet No Yes
24 V DC (20…27 V DC) power inlet No Yes
Rechargeable battery (for 230 V AC version only) No Yes
Flintec IndFace Software No Yes
* 20 mA TTY CL not for stainless steel housing
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 6 of 52
3.3 Technical Specifications
Accuracy
Accuracy class: III
EU Type approved: 10 000 intervals (single range); 2x 6 000 intervals (dual range)
Display and Keyboard
Display: 6 digits, 7 segments, LED red, 20 mm high (Panel type 14 mm high)
Display update rate: 250 ms
Keyboard: 8-keys; membran with tactile feedback
A/D Converter
A/D converter type:
Conversion rate: Max. 100 measurement values per second
Input sensitivity: 0.4 V/e (approved), 0.1 V/d (non approved)
Analogue input range: 0 to 20 mV
Internal resolution: Up to 8 000 000 counts
Display resolution: Up to 60 000 counts
Scale Calibration and Functions
Calibration: By application weights By application weights or in mV/V (eCal)
Corner adjustment: Automatic Only externally
Digital filter: 5 step adjustable 10 step adjustable
Weighing functions: Tare, zero, auto zero tracking, motion detection, auto zero at power up
Programmable setpoints: 3 setpoints, (needs digital I/O option)
Alibi memory: Optionally available: 74 880 records or 149 760 records
Linearity:
Load cells
Communication & protocol: RS485, compatible to RC3D
Excitation: 12 V DC, max. 450 mA
Number of load cells:
Connection:
Communication:
Continuous mode update rate: 100 ms
Option board update rate: 40 ms
Power supply:
200...240 V AC , 50/60 Hz Yes Yes
12...17 V DC, max. 12 VA No Optionally
20...27 V DC, max. 12 VA No Optionally
Battery runtime:
Battery charging time: 6 h
Environment and Enclosure
Operation temperature: -10 °C to +40 °C legal for trade; max. 85% RH, non-condensing
Enclosure
Up to 10 (directly powered) or
up to 16 (externally powered)
4-wire technique, 2 wires for digital
interface and 2 wires for power supply
Standard serial interface RS232C; 1 200 to 57 600 baud; programmable
Aluminium cast desk type (IP30) or
FT-11D FT-11
24 bit Delta-Sigma ratiometric
with integral analog and digital filters
stainless steel (IP65)
Within 0.0015% FS, 2 ppm/°C
5 V DC at 58...1200 max. 100 mA
Up to 6 load cells (350 ) or
18 load cells (1 100 ) connected in parallel
4- or 6-wire technique. Cable length is
274 m/mm² for 6-wire connection
5 h (with 93 LC) to 7 h (with 410 LC)
Aluminium cast desk type (IP30) or
panel type (front panel IP65) or
stainless steel (IP65)
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 7 of 52
3.4 Housing Dimensions
3.4.1 Desk Type Housing
140
Desk type front view Desk type side view
RS232
OPTIO
S/N
Desk type rear view Dimensions of Desk type housing with wall mount kit
155195
187
179
LOAD CELL
3.4.2 Stainless Steel Housing
220
220
220
Stainless steel housing front view Stainless steel housing side view
160
160
160
70
70
15
15
15
230
230
230
100 mm deep with big backplane option
100
100
100
70
70
70
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 8 of 52
3.4.3 Panel Type Housing (for FT-11 only)
90
Panel type front view Panel type side view
174
5,5
5,5
5,5
69
69
69
175
144
144
144
80
80
80
68
9
9
9
164
164
164
Sticker
Sticker
5, mounting with 4x M4
Panel type rear view The hole dimensions for mounting on a panel
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 9 of 52
4. Installation and Commissioning
PRECAUTION: Please read this manual carefully before energizing the indicator. Perform the commissioning
operation according the procedure given here. Use trained personnel for cleaning, commissioning, checking and
service of the indicator. The interference of untrained personnel may cause some unwanted damages or injures.
Note: In this manual the term “Digital Load Cell“ will be refered to “DLC“.
4.1 Mechanical Installation
First of all please determine the place where your indicator can operate safely. This place should be clean, not
getting direct sun light if possible, with a temperature between -10 ºC and +40 ºC, humidity not exceeding 85%
non-condensing. Take care to the housing dimensions and the suggested panel hole dimensions given in
chapter 3.4. All the cables should be installed safely to avoid mechanical damages.
To avoid electrical noise protect your indicator which has very low input signal level from the equipment that
produces electrical noise, especially in panel mounting.
4.1.1. Jumpers
There are three jumpers on the instrument’s main board/weighing board for calibration and for switching on/off.
To change the position of this jumpers, open the housing and perform the necessary changes before energizing
the indicator.
Figure 4.1 FT-11(D) Main board
J8 On/Off Switch
(always short circuit at the Panel type)
J2 Calibration
(short circuit for calibration)
Only for FT-11(D) & FT-12
J17 short circuit for on/off key function
4.2. Electrical Connections
4.2.1. Power Supply and Grounding
FT-11(D) is available with 230 V AC power supply or 24 V DC or 12 V DC power inlet. The 230 V AC indicators
are supplied with a power cable; the DC indicators are supplied with a special connector for the power inlet.
Prepare your power voltage according to your instrument’s power inlet. The DC connector pin configuration can
be found in Figure 4.2 below.
Definition
12 V / 24 V 1 3
0 V 2 2
Housing Gnd 3 1
Desk / Panel
The quality of the instrument’s ground will determine the accuracy and the safety of your indicator. A poor
ground can result in an unsafe condition if an electrical short cuircuit happens. A good ground connection is
needed to minimize extraneous electrical noise pulses. It is important that the instrument does not share power
lines with noise-generating equipment such as heavy load switching, motor control equipments, inductive loads,
etc. If the condition of the power line in the plant is bad, prepare a special power line and grounding.
If you have to service the indicator, turn off the power and wait at least for 30 seconds before interfering.
All connectors are at the rear side of the housings of desk and panel types. The stainless steel housings must
be opened to make the required connections. These connections must be done as described below.
Figure 4.2 The pin layout of the DC DC connector
for desk and panel type
Pin no.
for stainless steel housing
Pin no.
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 10 of 52
4.2.2. Standard Load Cell Connection (for FT-11 only)
The load cell wiring should be made carefully before energizing to avoid damages to the weight indicator and
the load cells. The input resistance of the load cells that you want to connect should be more than 58 .
The sense pins of the instrument should be connected. In 4-wire installations the sense and excitation pins with
the same polarity should be short circuited at the connector side.
6-wire Load Cell
Connection
+ Excitation + Excitation 1 1
+ Sense + Excitation 2 2
Shield Shield 3 4
- Sense - Excitation 4 6
- Excitation - Excitation 5 7
+ Signal + Signal 7 3
- Signal - Signal 8 5
Shield Shield Connector body 4
4-wire Load Cell
Connection
Pin no. for desk type & panel
type (D-Sub, 9-pin, female)
Pin no. for stainless steel
housing (J12 connector)
4.2.3. Digital Load Cell Connection (for FT-11D only)
The signal cable between the instrument and the junction box must be suitable for high speed RS485. The
cable must have a common shield. Please also take care for the correct termination of the RS485 bus (see also
manual of type KPFD junction box).
Definition
+ Power 5 5
- Power 3 6
COM A 9 2
COM B 7 3
Shielding Connector body 4
Pin no. for desk type housing
(D-Sub, 9-pin, female)
Pin no. for stainless steel housing
(J12 connector)
4.3. Commissioning
After making the required installations and connections to your indicator, turn the power on and perform
following steps:
Get familiar with the instrument’s setup mode (see chapter 6.1)
For FT-11D only: Define the digital load cells (see chapter 6.2)
Define the configuration parameters (see chapter 6.3)*
Define the scale parameters (see chapter 6.4)
Calibrate the scale (see chapter 6.5)
* Note: Most of the parameters can be skipped for later setup. Please take care for the parameters which may
be locked by the J2 calibration jumper in legal for trade applications (see Appendix 1: Setup and Calibration
Menu of the instrument).
If you want to use the Flintec IndFace Software (for FT-11 only) then you have to set up the instrument’s
standard serial interface to host mode (see chapter 9.2) before you adjust all the configuration parameters.
After checking the performance of your weighing instrument you can begin to use the indicator.
If there are peripheral connections, first you should turn the power off; make the peripheral connections, perform
the required safety checks and energize the indicator. Then set the related parameters and check if the
peripheral devices are operating properly.
If required perform following additional steps:
Set up the serial interfaces (see chapter 8.2)
Printer setup (see chapter 8.2)
Set up other optional inputs and outputs (see chapter 8.3ff and 9)
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 11 of 52
5. Front Panel and Keypad
5.1. Weight Display and Status LEDs
Figure 5.1 Front panel view of FT-11(D)
The weight display of FT-11(D) is a 6 digit LED with 14 mm or 20 mm height.
At the right side of the display there are three status LEDs for indicating “Gross”, “Net” and the standard unit
“kg”.
Below the weight display there are several status LEDs. The meanings of these are:
Status LEDs related to the weighing process
LED Meaning
Info: The instrument displays information different from the weight
Range: With multi range scales these LED indicates the current operating range. For single range scales
only the first range LED is lit.
Stable: The weight value on the display is stable
Center of zero: The weight is in the center of zero (see param. [203] in chap.6.4)
Key lock: is active
Power: This LED will flash in case of supply voltage decrease. If the voltage decreases too much the
indicator will automatically shut off.
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 12 of 52
5.2. Keypad
The meaning of the front panel keys and the key functions are:
Key Meaning
Power On/Off: This key is used for turning the instrument on or off.
To switch off the key must be pressed and hold at least for 2 seconds.
There is no On/Off key on panel type housings.
Manual Zero: In Gross mode, if the scale doesn’t show zero while there is no load on the pan, you can
zero the scale by pressing this key.
Manual Tare: Pressing this key tares the scale and gets into the Net mode.
Clear: Pressing this key clears the tare and the scale and returns to Gross mode.
Print: By pressing this key weight data and other information depending on the instrument setup are sent to a printer or a PC via serial port.
Enter: This key is used for confirming an entered value and to get to the next parameter in setup mode.
High Resolution: By pressing this key the weight value will be shown with a higher resolution for a short
period.
Info: This key is being used to view Total and CN information. To toggle between these infos you have to
press this key repeatedly and finally you will return to weighing mode again. To clear the total weight, you
have to press the <Clear> key while the total value is seen on the display. [All C ] will appear on the
display. You can confirm the deletion by pressing <Enter> or cancel by pressing the <F> key.
Function : This key is used in combination with other keys to enter any function or to quit without saving.
Setpoint: These keys are being used to view or to enter setpoint values.
5.3. Key lock
The instrument has the capability to lock the keys to avoid unauthorized person’s interference. You can activate
or deactivate this function by pressing the <F> and <Key Lock> keys sequentially. The LED with the key sign
(below the display) indicates the keys are locked.
For FT-11: The key(s) which would be locked are set in parameter [115].
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 13 of 52
6. Setup and Calibration
6.1. Basics
6.1.1. Basic Setup Keys on the Frontplate
The symbols located on the lower right corner of each key indicate the function of the keys in the setup menu.
The basic meanings of these keys are given in the table below.
Exit without
saving
Stepping forwards to
the next parameter
Stepping backwards to
the previous parameter
Changing
the digit
If you use a PC the Flintec IndFace software can be used for the setup and the calibration (for FT-11 only).
6.1.2. Entering the Setup and Calibration Menu
To enter the Setup and Calibration Menu: Press <F> and <Info> keys sequentially
First [FunC ] and then [PASSWr ] prompts will be displayed sequentially.
Here you can enter the parameter block by using:
the service password: Press <Zero> and <Info> and <Enter>
or the operator password: Press <Tare> and <Enter>
The calibration jumper (see chapter 4.1) should be short circuit to change the legal metrological parameters in
the service mode (there is black box on the top right corner of the grey coloured boxes in the calibration menu
flowcharts, see Appendix 1).
The Setup and Calibration menu consists of main blocks which are displayed as [X-- ] and sub-blocks.
By using <> and <> keys you can reach previous or next main blocks. After reaching the desired main block
you can get in by pressing the <Enter> key. As you enter the block you will reach the first sub-block in that main
block. The sub-block address will be seen on the display as [X0- ].
You can also search between the sub-blocks by using <> and <> keys and reach the first parameter of the
displayed sub-block by pressing the <Enter> key. The number of the parameter is displayed as [XY0 ]. Again
you can search between parameters by <> and <> keys.
For entering numerical values in the parameters press the <Tare> key to select the digit and press the <Zero>
key to change the value.
Changing the value
or increasing the
flashing digit
Clear
(delete)
Enter
6.1.3. Exiting the Setup and Calibration Menu
Whatever parameter block you are in – if you press the <F> key, you will get out of the active sub-block and
reach the next sub-block. If you press the <F> key again you will get out of the active block and reach the next
main block. If you press the <F> key once again, the [SAvE ] message appears on the display.
Here you can press
the <Enter> key to save the changes into the memory or
you can press the <Tare> key to store the changes temporarily until the power goes off or
you can press the <F> key to abort any changes.
The [Waıt] message will be displayed for a few seconds and afterwards the weighing mode will restart
automatically. Especially for legal metrological usage, please don’t forget to turn the power off and remove the
calibration jumper before you start the operation.
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 14 of 52
6.2. Defining the Digital Load cells (for FT-11D only)
8
6.2.1. Digital Load Cell Addressing
The parameter group [22-] is used for defining and addressing the DLCs.
[22-] DLC Configuration Block
In this section the DLCs are introduced to the indicator.
[220 X] DLC Type
0 = RC3D This parameter must be set to “0” for type RC3D digital load cell.
[221 XX] Quantity of DLC
Enter the quantity of DLCs used in the scale. The quantity can be selected between 1 and 16.
[222 ] DLC Addressing
The following diagram shows the addressing principles of the DLCs in a weighbridge / truck scale. The
numbers in the diagram show the DLC addressing principle for easy eccentricity adjustment.
Entrance Exit
1
3
5
For addressing of DLCs, press the <Tare> key.
The messages [222 YY] and [ XXXXXX ] will be displayed alternately.
Here: “YY” DLC number /address
“X” Last 6 digits of the DLC’s serial number
If you press <Enter> the next load cell will be shown, the <F> key is used to return the parameter group
[20-].
You can enter the S/N, by pressing the <Tare> key. The serial numbering system of the indicator is 9
digits. First you will see the first 3 digits of the S/N. Enter this digits by pressing the <Tare> and <Zero>
keys. If the serial number of the DLC is less than 9 digits, the unused digits on the left must be set to “0”.
For example, if the serial number is “1234567” then “001234567” must be entered. After entering the first
3 digits, the following 6 digits are entered by pressing <Enter>.
Important hint: When addressing the connected Type RC3D load cells, the load cells should always be
loaded. If the load cells are unloaded, FT-11D may show a DLC input error.
After entering all serial numbers sequentialy, the display goes to parameter group [20-]. This means all
load cells are addressed and ready to work in the scale.
For replacing any load cell, you have to re-address the new load cell in parameter [222]. After installing
the new load cell, turn on the indicator. Enter parameter [222] and then access the load cell address of
the replaced DLC. Enter the serial number of the new load cell as described in the previous paragraph.
Note: It is always assumed that the RS485 load cell bus system is correctly terminated, please see the
manual of the installed junction box.
Figure 6.1 The addressing principles of the DLC’s in a weighbridge / truck scale
2
4
6
7
9
10
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 15 of 52
6.2.2. Eccentricity Adjustment
The eccentricity adjustment must be done in parameter group [32-] before the calibration of the scale. The
adjustment can be done for each load cell independently or for sectional pairs. The selection is done by
parameter [320]. After selection of the adjustment method , the adjustment is performed automatically as
described in parameter [321].
[32-] DLC Eccentricity Adjustment Block
In this parameter group the eccentricity correction is performed automatically or manually. This
adjustment must be performed automatically before calibration.
[320 X] Adjustment Method
The scale eccentricity can be adjusted in corners (each DLC individually) or in sectional pairs.
0 = Independent DLC (factory default) 1 = Sectional pair
[321 ] Auto Adjustment
After entering parameter [321] by pressing the <Tare> key, you will see [Zero CA] on the display. Unload
the scale and press the <Enter> key. Do not interfere the scale during the period the [Waıt] message is
displayed. Next the instrument will display [321 01]. Place a weight of at least 10% of the DLC capacity
as close as possible to the independent load cell or sectional pair 1. Then press <Enter>. After some
period [321 02] appears on the display. Apply the same load to the other places in sequence.
After loading all load cells / sections the message [322 ] will be shown on the display. This means the
eccentricity error correction is performed automatically.
[322 ] Manual Adjustment
If needed the eccentricity error can get modified manually. You can change the error correction
coefficients of the DLCs in this parameter. For entering this parameter press the <Tare> key. You can
change the load cell number by the <Enter> key. For changing the coefficient of any DLC select the
number of the DLC and press the <Tare> key to view and edit the coefficient. Use <Tare> and <Zero>
keys for changing the value and then press the <Enter> key.
To exit this parameter press the <F> key and save the changes you applied by pressing <Enter>. The
<F> key is used to quit without saving the manual corrections.
[323 X] Service mode: Set Shift Coefficients manually to 1
This parameter allows you to view the weighbridge’s performance with disabled eccentricity correction for
service purposes. Using this function does not change any stored coefficient but all coefficients are
“temporarily” set to value 1.
0 = Normal operation (factory default) 1 = Service mode
Attention: After the eccentricity adjustment a scale calibration has to be done.
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 16 of 52
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