AD-4401 WEIGHING INDICATOR 1386-2A-IE
© 1998 A&D Company Ltd. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, or translated into any language in any form by any means without the written permission of A&D Company Ltd. The contents of this manual and the specifications of the instrument covered by this manual are subject to change for improvement without notice.
CONTENTS CHAPTER 1 GENERAL DESCRIPTION...................................................................................... 3 CHAPTER 2 SPECIFICATIONS ................................................................................................... 4 2-1 A/D CONVERTER BLOCK ........................................................................................................ 4 2-2 DIGITAL BLOCK..............................................................................................................
CHAPTER 7 WEIGHING SEQUENCE ....................................................................................... 32 7-1 WEIGHING SEQUENCE................................................................................................... 32 7-2 CUSTOMER PROGRAMMED CONTROL MODE ......................................................................... 33 7-3 BUILT-IN AUTOMATIC PROGRAM MODE ................................................................................. 35 7-5 CHECK WEIGHING MODE ..........
CHAPTER 1 GENERAL DESCRIPTION The AD-4401 is a compact-weighing indicator equipped with high-performance A/D conversion and general-purpose capabilities. It has the following features. User-friendly cabinet design • Small DIN size (panel dimensions: 138+1.0/-0 x 68+0.7/-0 mm) easy to mount in a control cabinet. • Splash-proof front panel. High-performance A/D Converter • High-speed sampling, 100 times/second. • High resolution, 1/16,000. • High sensitivity, 0.3 µV/D.
CHAPTER 2 SPECIFICATIONS 2-1 A/D CONVERTER BLOCK Input sensitivity Zero correction range Load Cell Excitation Temperature coefficient Zero point Sensitivity Non-linearity Maximum measurement voltage Internal resolution Maximum display resolution Sampling speed 0.3 µV/D or more 0 to 20 mV ( 0 to 2mV/V) 10VDC +/- 5 %, 230 mA, with remote sensing capability (Up to eight 350 ohm load cells can be connected) ±(0.2 µV + 0.0008 % of Dead Load ) / °C typ ± 0.0008 % / °C typ ± 0.01%FS 32 mV (3.2 mV/V) Approx.
WEIGHING CAPABILITIES Zero point correcting capability (Zero) Zero tracking capability Tare subtracting function Stability detecting capability Clears the gross to zero in compliance with a command from the ZERO keys, Control I/O, etc. Capable of enabling or disabling operations at unstable time. Zero correction value is backed up by a battery. Adjustable range: Can be freely set within 1 to 30 % of weighing capacity. Detects gross zero point drift and performs zero correction automatically.
2-5 FRONT PANEL MAIN DISPLAY SECTION A 7-digit 7-segment display. Displays the gross, net weight, etc. SUB DISPLAY SECTION An 8-digit 7-segment display. The display content can be selected using the “general functions.” The display content is indicated by attaching an accessory label. STATUS DISPLAY SECTION (UPPER) The upper “-” mark indicates the status of the weight value. [ZERO] Illuminated when the gross is located at the center of the zero point (center zero).
STATUS DISPLAY SECTION (LOWER) The lower “-” mark indicates a comparison result. In the normal mode, it is illuminated when a setpoint output of an identical name is turned on. In the setpoint setting mode, the “-” mark relevant to the value in the lower numerical display section blinks. Attach an accessory label depending on the weighing mode. < Normal Batching > [FINAL] Blinks while setting the final weight. Normal batching —— Illuminated when the net weight is within a positive range. [F.
< Check Weighing > The meaning of each “-” mark differs completely. Attach a different accessory label. There are four kinds of Check Weighing. [Z.BAND] Illuminated when the gross weight is less than the zero band. [Lo-Lo] Blinks while setting the Lo-Lo. Illuminated when the comparison result output, Lo-Lo, is turned on. [Lo] Blinks while setting the Lo limit. Illuminated when the comparison result output, Lo, is turned on. [Go] Blinks while setting a reference value.
KEY SWITCHES [CAL] The key used to enter the calibration mode. A cover is provided so that this key can not be operated if used in a certified commercial application. In order to prevent erroneous operation, attach and seal the cover. [SETPOINT] The key used to set a setpoint. If this key is pressed together with the [ENTER] key, you will enter the “general function” mode. [ZERO] ([<]) The key used for zeroing. A zeroing condition can be set with the “calibration related functions.
2-6 REAR PANEL (a) Connects the thumbwheel switch or setpoint unit (OP-05) to set a setpoint required for a weighing sequence. See 8-2 and 9-4. (b) Inputs/outputs the signals such as tare subtraction input, each loading output required for the weighing sequence. The capability of each terminal can be changed freely. See 8-1. (c) Provides an output for the standard serial interface (current loop).
CHAPTER 3 INSTALLATION AND CONNECTIONS This chapter describes the installation environment, and connections to the power terminals and load cell connector. For other external inputs/outputs, see their relevant descriptive chapters. Control I/O, Setpoint (SETPOINT), Standard serial output (SER. OUT) —— Chapter 8 Options —— Chapter 9 3-1 ENVIRONMENT ,017694 ,0938 +<623 -068 This is a precision electronic instrument. Handle it very carefully. working temperature range is -5 to +40°C.
6) To change a blown fuse. Turn the power off and wait 10 seconds or more. Replace the fuse with the accessory fuse without touching other parts. Make sure that no stray material is left in the case, screws, spacer, etc., before closing the case. 3-3 LOAD CELL For a load cell cable, the use of a 6 wire shielded cable is recommended in order to reduce weighing error. When using a 4 wire cable, connect pin no. 1 to no. 2 (load cell applied voltage + and sensing input +), and pin no. 3 to no.
CHAPTER 4 OPERATION 4-1 OPERATION MODE This instrument has various “modes” in compliance with its operating conditions. Use the keys to change the mode. You can change the mode in the full-line arrow direction. The broken-line arrow direction indicates only an automatic reset after completion of setting or a reset by turning off the power. .
4-2 CONFIRMATION OF OPERATIONS The following outlines the procedure up to displaying a weight value in order to confirm operations after unpacking. Connect a load cell or load cell simulator to the proper terminals on the rear of the indicator. TURNING ON THE POWER * Do load cell wiring before turning on the power. If the power is turned on in the normal mode, the display unit will be fully illuminated for about 2 seconds, and then, a weight value will be displayed in the main display section.
Step 12 The main display section displays “CAL SPn”, the Subdisplay section displays a weight value (current weighing capacity, set value for CALF-04), and the lowest digit of the weight value blinks. Adjust to the calibration weight value that you have on hand, using the [<], [>], and [ V ] keys. Step 13 Place the weight on the system, and press the [ENTER] key after the motion-detect mark is turned off. The Subdisplay section displays “——” for about 2 seconds.
SETTING WITH THE KEY SWITCH (SPF-01 = 0) This method sets the setpoint using only the keys on the front panel. Step 1 Press the [SETPOINT] key in the normal mode. The indicator will switch to the setpoint setting mode. The “-” mark above FINAL in the Subdisplay section blinks and a final value is displayed. • Operating the [SETPOINT] key allows you to refer to other setpoints. • Operating the [<] or [>] key also allows you to refer to the setpoint.
SETTING WITH THE 16-DIGIT THUMBWHEEL SWITCH (SPF - 01 = 2) This method assigns an exclusive thumbwheel switch to each setpoint. Some setpoints are set with the front panel keys without using the thumbwheel switch. Assignment of the thumbwheel switch and the front panel keys differs depending on the weighing mode (CALF-14) Since the setpoint assigned to the thumbwheel switch is read in real time, it can be referred to by key operation, but it cannot be altered.
CHAPTER 5 CALIBRATION 5-1 GENERAL DESCRIPTION In the calibration mode, you carry out an operation, which associates a load cell output voltage with a weight value, and operations directly related to weighing. There are the following four kinds. Actual load calibration Calibration Modes: Calibration related functions Digital span Initialization of all data This is calibration with weights. [Zero calibration] The zero point is measured with no weight loaded.
5-2 ACTUAL LOAD CALIBRATION (CAL SET) The zero point and span are calibrated using a calibration weight. When making calibration for the first time, it is necessary to set the unit, decimal point position, minimum division, and capacity in advance, using the calibration-related functions mentioned in 5-3. In order to avoid influence by temperature drift; carry out this calibration 10 minutes or more after turning on the power.
5-3 CALIBRATION RELATED FUNCTIONS The calibration related functions are designed to set the basic constants for the indicator. They should be carried out first thing upon installation. Step 1 Remove the cover from the calibration switch located at the lower left of the front panel and press the [CAL] key (found inside). “CAL” is displayed to inform you that the indicator is entering the calibration mode. Step 2 Press the [ENTER] key.
CALIBRATION RELATED FUNCTIONS Setting CALF- Name 01 Weighing Unit 2 02 Decimal Point Position 0 Default Parameter 0 1 2 3 4 0 1 Description None g (International version) kg ( International version and USA version) t (International version) lb. ( USA version) None 12345 1 1234.5 10 2 2 10 3 10 4 1, 2, 5, 10, 20, or 50 03 Minimum Division 1 04 Capacity 16000 0 to 800000 05 Zero Range 2 0 to 30 06 Zero Tracking Time 0.0 0.0 to 5.0 Zero Tracking Width 0 0 to 9 3 4 123.45 12.
CALF08 Name Motion Detection Time Motion Detection Range Setting Default Parameter 1.0 0.0 to 5.0 2 0 to 9 Description Motion is detected in combination with CALF-09 Motion Detection Width. It is not detected when set to 0. Its unit is seconds. Motion is detected in combination with CALF-08 Motion Detection Time. Its least input increment is 1D.
15 Zero Input Voltage 0.000000 0.000000 to 2.200000 Input Voltage (mV/V) from the Load Cell at "Zero", which is determined in "Zero Calibration" with weights. 16 Span Input Voltage (Capacity to zero) 3.200000 0.000000 to 3.200000 Input Voltage (mV/V) from the Load Cell at "Span", which means the difference between Capacity and Zero. The voltage is determined in "Span Calibration" with weights.
5-4 CALIBRATION ERRORS Err messages CErr 0 CErr 1 CErr 2 CErr 3 CErr 4 CErr 5 CErr 6 Causes The minimum graduation is other than 1, 2, 5, 10, 20, and 50. Resolution (weighing capacity/minimum graduation) is more than 16000. The voltage of the zero calibration point is overloaded in the positive direction. The voltage of the zero calibrated point is overloaded in the negative direction. The calibration weight is more than the weighing capacity.
CHAPTER 6 GENERAL FUNCTIONS The general functions determine the operations of the AD-4401 and are all stored in the EEPROM. Each function is sorted into the groups by capabilities and represented by prefixing a function number (F-XX) with its group name. This chapter describes how to set the general functions and their details. For functions related to options, see the descriptive sections for the options. SETTING METHOD Step 1 • With the [ENTER] key pressed and held, press the [SETPOINT] key.
6-1 BASIC CAPABILITIES RELATED FNCF- 01 Name Key switch disable Setting Default 00000000 Parameter 00000000 to 11111111 0 1 2 02 Capabilities of [F] Key 0 03 Display Rewrite Rate 1 04 Display Content of Subdisplay Section 0 Description 3 4 5 6 7 8 1 2 3 0 1 2 3 4 5 6 0 Not disable 1 Disables None Print command for manual print Hold Hold function by the F key is not available if there is any set to “HOLD” in the Control I/O (see6-3).
FNCF- 05 Name “ “ Status display Capability Setting Default 0 Parameter 0 Description None 1 * discharging 2 Zero tracking Value of each digit and cutoff frequency "Discharging" is exclusively intended for normal batching (built-in automatic program mode). 0: None 1: 11.0Hz 2: 8.0Hz 06 Digital Filter (Series connection of two digital filters.) The digital filter is designed to suppress dispersion of a load cell output signal. Two of them are connected in series as shown below. 3: 5.
6-2 WEIGHING SEQUENCE RELATED SQF- Name Default 01 Selection of comparison weight 1 02 Automatic accumulation 0 Internal count 2 Display count 0 No Automatic accumulation Accumulates only acceptable weight Accumulates all values No automatic free fall compensation Moving average of last four times (See 7-9 for details.) Fuzzy automatic free fall compensation (See 7-10 for details.
SQF09 10 11 12 13 14 15 16 17 18 19 20 21 22 Name Batch start wait timer Full-flow comparator Inhibiter timer Medium-flow comparator Inhibiter timer Dribble-flow comparator Inhibiter timer Judgment wait timer Batch Finish complete output width Batch monitoring timer Supplementary flow open timer Supplementary flow close timer Discharging start wait timer Discharging valve close wait timer Discharging time monitor timer Add the final to zero band setting Add the final to full setting Default Settin
6-3 CONTROL I/O INPUT RELATED INF-01 through INF-06 represents the input terminals A1 through A6, respectively. The content of setting is common to each terminal, but initial setting differs.
6-5 SIF- 01 STANDARD SERIAL OUTPUT RELATED Name Output Data Setting Default 1 Parameter 1 2 3 4 5 6 7 8 02 Data transmitting mode 1 03 Baud rate 2 1 2 3 1 2 Description Displayed weight Gross Net Tare Gross/Net/Tare Accumulated weight Accumulated counts Accumulated weight /Accumulated counts Stream mode Auto-Print mode Manual-Print mode 600 bps 2400 bps 31 A & D standard format Accumulation data format
CHAPTER 7 WEIGHING SEQUENCE 7-1 WEIGHING SEQUENCE GENERAL DESCRIPTION Weighing sequence, means to output control signals to the units connected to the Control I/O, etc., by means of input signals from the load cell and external unit. In order to cope with a wide range of applications, the AD-4401 has various weighing sequences. The weighing sequence differs depending on the weighing mode.
7-2 CUSTOMER PROGRAMMED CONTROL MODE NORMAL BATCHING (WEIGHING MODE: CALF-14 = 1) Output Terminal Zero band Full Flow Medium Flow Dribble Flow Overlimit Underlimit When an output condition is established, a relevant output terminal is turned on (power continuity with output COM). An output terminal number can be selected with the general functions, OUTF-01 through OUTF-08. A setpoint signal output is turned off unconditionally when the operation mode is other than the normal mode.
LOSS-IN-WEIGHT (WEIGHING MODE CALF-14 = 2) Output Terminal Zero band Full (Hopper Full) Medium Flow Dribble Flow Overlimit Underlimit Output Condition Gross ≤ Zero band Gross ≥ Full -Net ≥ Final – Preliminary -Net ≥ Final – Free fall -Net > Final + Overlimit -Net < Final – Underlimit When an output condition is established, a relevant output terminal is turned on (power continuity with output COM). An output terminal number can be selected with the general functions, OUTF-01 through OUTF-08.
7-3 BUILT-IN AUTOMATIC PROGRAM MODE NORMAL BATCHING / NO SUPPLEMENTARY FLOW (WEIGHING MODE CALF-14 = 3) Output Terminal Zero band Full Flow Medium flow Dribble flow Overlimit Underlimit When an output condition is established, full flow, medium flow, and dribble flow outputs are turned off, but the other outputs are turned on. Once the full flow, medium flow, and dribble flow are turned off, they are not turned on until the next start of loading.
11. When the discharging valve close wait timer completes the set time, the discharging output signal is turned off. 12. When the Batch Start input signal for the next cycle is input; • The Batch Finish output signal is turned off. • The judgment result output signal (overlimit or underlimit) is turned off. • Now, the weighing sequence has cycled and restarts from Step 2 at this time.
NORMAL BATCHING/ WITH SUPPLEMENTARY FLOW (WEIGHING MODE CALF-14 = 3) Supplementary flow automatically turns on the dribble flow for the specified time when the loaded weight is not sufficient. To make supplementary flow, set the “maximum supplementary flow times, SQF-07,” to other than 0, and the “supplementary flow open timer, SQF-15,” and “supplementary flow close timer, SQF-16,” to their respective times. Supplementary flow is also available in loss-in-weight (built-in automatic program mode).
13. When the discharging start wait timer completes the set time; • The discharging output signal is turned on, and the discharging time monitor timer starts. 14. When the gross becomes lower than the zero range; • The discharging valve close wait timer starts. • The discharging time monitor timer is reset. 15. When the discharging valve close wait timer completes the set time, the discharging output signal is turned off. 16.
LOSS-IN-WEIGHT (WEIGHING MODE CALF-14 = 4) Output Terminal Zero band Full (Hopper full) Medium flow Dribble flow Overlimit Underlimit Output Condition Gross ≤ Zero band Gross ≥ Final - Full - Net ≥ Final - Preliminary - Net ≥ Final – Free Fall - Net > Final + Overlimit - Net < Final-Underlimit When an output condition is established, medium flow and dribble flow outputs are turned off, but the other outputs are turned on.
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SUPPLEMENTARY DESCRIPTION FOR BUILT-IN-AUTOMATIC PROGRAM MODE To subtract the tare automatically prior to loading Set the Batch Start wait timer to 0.1 second or more and connect the tare subtraction input and the Batch Start input in parallel. When using with a high-speed packer and it is difficult to stabilize after the judgment wait timer completes the set time Set stability at Judgment to “Unrequired.
7-4 SUPPLEMENTARY DESCRIPTION FOR BATCH WEIGHING When setting the setpoint with the 16-digit thumbwheel switch In batch batching, connection of the 16-digit thumbwheel switch is common. When SPF-01 = 2 is set, connect the thumbwheel switch to the SET POINT connector as show in the figure below.
7-5 CHECK WEIGHING MODE CHECK WEIGHING MODE 1 (WEIGHING MODE CALF-14 = 5) Output Terminal Zero band Hi-Hi Hi Go Lo Lo-Lo Output Condition Gross ≤ Zero band Net > Hi-Hi limit Net > Target Weight + Hi limit Target Weight + Hi limit ≥ Net ≥ Target Weight – Lo limit Net < Target Weight – Lo limit Net < Lo-Lo limit When an output condition is established, a relevant output terminal is turned on (power continuity with output COM).
WHEN SETTING THE SETPOINT WITH A 15-DIGIT THUMBWHEEL SWITCH When SPF-01 = 2 is set, connect the thumbwheel switch to the SET POINT connector as show in the figure below. SETPOINT CONNECTOR WIRING Pin # A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 1 2 4 8 Target weight 100 Target weight 101 Target weight 102 Target weight 103 Target weight 104 Hi Limit 100 Hi Limit 101 Hi Limit 102 Pin # B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 Hi Limit. 103 Hi Limit.
CHECK WEIGHING MODE 2 (WEIGHING MODE CALF-14 = 6) Output Terminal Zero band Hi-Hi Hi Go Lo Lo-Lo Output Condition Gross ≤ Zero band Net > Hi-Hi Limit Target Weight + Hi-Hi Limit ≥ Net > Target Weight Target Weight + Hi Limit ≥ Net ≥ Target Weight – Lo Limit Target Weight – Lo-Lo Limit ≤ Net < Target Weight – Lo Limit Net < Lo-Lo Limit 45 When an output condition is established, a relevant output terminal is turned on (power continuity with output COM).
WHEN SETTING THE SETPOINT WITH A 15-DIGIT THUMBWHEEL SWITCH When SPF-01 = 2 ( 16-digit mode ) is set, connect the thumbwheel switch to the SET POINT connector as show in the figure below. ;I . 2 5 5 M O Q H E C M K N A Q I B J E ,
CHECK WEIGHING MODE 3 (WEIGHING MODE CALF-14 = 7) Output Terminal Zero band Hi-Hi Hi Go Lo Lo-Lo Output Condition Gross ≤ Zero band Net > Hi-Hi Limit Net > Hi Limit Hi Limit ≥ Net ≥ Lo Limit Net < Lo Limit Net < Lo-Lo Limit When an output condition is established, a relevant output terminal is turned on (power continuity with output COM). An output terminal number can be selected with the general functions, OUTF-01 through OUTF-08.
WHEN SETTING THE SETPOINT WITH A 10-DIGIT THUMBWHEEL SWITCH When SPF-01 = 2 (16-digit mode) is set, connect the thumbwheel switch to the SET POINT connector as show in the figure below. . 2 5 5 L N P G E C L J M A P H B I E , 8 7 . / 0 1 2 3 4 5 6 .- .. ./ @HEQ FNLJ PGE =EAN MAKEI . 0 2 4 6 .. . 0 2 4 / 1 3 5 .- .
CHECK WEIGHING MODE 4 (WEIGHING MODE CALF-14 = 8) Output Terminal Zero band Hi-Hi Hi Go Lo Lo-Lo Output Condition Gross ≤ Zero band Net > Hi-Hi Limit Hi Limit > Net ≥ Hi Limit Hi Limit ≥ Net ≥ Lo Limit Lo Limit > Net ≥ Lo-Lo Limit Net < Lo-Lo Limit When an output condition is established, a relevant output terminal is turned on (power continuity with output COM). An output terminal number can be selected with the general functions, OUTF-01 through OUTF-08.
WHEN SETTING THE SETPOINT WITH A 16-DIGIT THUMBWHEEL SWITCH When SPF-01 = 2 (16-digit mode) is set, connect the thumbwheel switch to the SET POINT connector as show in the figure below. =N ?NPNV =N -=N ?NPNV : : : : : : : : /.1 /.0 /./ /.. /.1 /.0 /./ /.. 620/ 620/ 620/ 620/ 620/ 620/ 620/ 620/ ; N R J K + ER U M N H G / D / 3 6 6 R T V M K I R P S G V N H O K , : : : : : : : : /.1 /.0 /./ /.. /.1 /.0 /./ /..
7-6 COMPARISON WEIGHT Although the weight compared with the setpoint is mainly the net, the gross is partially compared. Since the net assumes a negative value in loss-in-weight, setpoint is made with the polarity reversed. Setpoint of the weight with the setpoint allows you to select the display count and internal count. One graduation of the weight value appearing in the display section is the minimum graduation set with CALF-03.
7-9 AUTOMATIC FREE FALL COMPENSATION Automatic free fall compensation is the capability to reduce a loading error in batch weighing. The following two kinds can be selected depending on the functioning of the automatic free fall compensation (SQF-03). 1) Automatically setting the “moving average of the last four actual free falls” as the free fall for the next weighing. 2) Automatically adjusting free fall setting, applying fuzzy logic. This section describes item 1; item 2 is described in 7-10.
CHAPTER 8 INTERFACE 8-1 CONTROL I/O The Control I/O is intended for inputting/outputting weighing control signals to an external unit. It consists of 6 inputs and 8 outputs. The capability of each input/output terminal can be selected, except COM (see 6-3, 6-4 for selection method). Upon shipment, the Control I/O terminals were set for normal batching (Built-in Automatic Program Mode). TERMINAL FUNCTIONS IN THE BUILT-IN AUTOMATIC PROGRAM MODE Division Input COM Output Terminal No.
INPUT TERMINAL FUNCTION (INF-01 TO INF-06) The capabilities of the input terminals A1 through A6 can be optionally selected with the “general functions INF-01 through INF-06.” (See 6-3 for method of selection) Set value 0 Terminal No.
OUTPUT TERMINAL FUNCTION (OUTF-01 TO OUTF-08) Output terminals B1 through B6 can be optionally selected with the “general functions OUTF-01 through OUTF-08.” (See 6-4.
8-2 SETPOINT The setpoint refers to a weight setting such as the reference value and final required for the weighing sequence. Connect the thumbwheel switch which makes this setting to the SET POINT connector. Connection of the setpoint differs depending on the general function, “Setpoint Read Mode (SPF-01).” It also differs depending on the weighing mode. THUMBWHEEL SWITCH NOT REQUIRED MODES; SPF-01 = 1 You do not have to connect anything to the SET POINT connector.
8-3 STANDARD SERIAL OUTPUT (SER. OUT) The standard serial output is a 20 mA current loop. It is located on the rear panel of the indicator, and is used to connect a remote indicator or printer. This output does not have a power supply. Therefore, the external unit must supply the power. Setting of the standard serial output is done with the general functions, SIF-01 through SIF-03. CONNECTOR FOR STANDARD SERIAL OUTPUT (INCLUDED WITH THE ACCESSORIES.
OUTPUT DATA There are two kinds of transmission formats; “A & D standard format” and “Accumulation data format”. The A & D standard format has been used for our weighing indicators. It consists of two headers, data, unit, and terminator. The Accumulation data format outputs a simple header, numerical data, unit and terminator. The following shows their examples.
< Example > Accumulated weight Weight + Overflow Weight Overflow Accumulated count Counts + Overflow Header1 8 Digits Including Data, Polarity, and Decimal Point T W , + 0 1 2 3 4 5 6 . 7 8 k g CR LF T W , + SP SP SP SP SP SP SP . SP SP k g CR LF T W , - SP SP SP SP SP SP SP . SP SP k g CR LF T N , + 0 1 2 3 4 5 6 7 8 9 SP SP CR LF T N , + SP SP SP SP . SP SP .
CHAPTER 9 OPTIONS There are the following external input/output options. Note) The 4401 has only one slot for OP-01, OP-03 or OP-04. Therefore only one of them can be installed. • OP-01 BCD output • OP-03 RS-422/-485 input/output • OP-04 RS-232C input/output • OP-05 Setpoint unit (Setpoint setting thumbwheel switch, common to the AD4323) • OP-07 Analog output (100 times/sec.
INTERFACE SPECIFICATION Open collector (Common is connected to the NPN transistor emitter sides) Output data: 6-digit BCD code, overflow, polarity, motion, strobe Dry contact (Pulled up to +5 V by a resistor) Input data: Hold Output Input • • • In case of negative logic, each terminal is turned on at “1”. “ON” refers to the state that there is power continuity between the terminal and GND. Example: The B14 terminal is turned on in NET.
DATA TRANSFER MODE There are three kinds of data transfer modes for the BCD output; “stream,” “auto print,” and “manual print.” [Stream], [Auto Print], and [Manual Print] The functions of these transfer modes are the same as described in {8-3 Standard Serial Output}. TIMING Strobe pulses are turned on approximately 7 ms after rewriting the output data and turned off in 17 ms. If a hold input is turned on , an update of the output data will stop within 50 ms.
Note: • The polarity of signal A and B vary from computers. • Not necessary to ground the SG terminal for the computer without a signal ground terminal. • Wait 8 ms or more before selecting a unit by SDA and SDB.
The following is a program for connecting two AD-4401s and a computer by RS-422.
RSF- 01 Name Output data Default 1 Parameter 1 2 3 4 5 6 7 8 02 Data transfer mode 1 1 2 3 4 5 6 03 Baud rate 5 04 Parity 2 05 06 Character bit length Stop bit length 7 1 07 Terminator 2 08 RS-422/ RS-485 switching 1 09 Address number 0 1 2 3 4 5 6 0 1 2 7 8 1 2 1 2 1 Setting Description Displayed weight Gross Net Tare Gross/Net/Tare Accumulated weight Accumulated counts Accumulated weight/ Accumulated counts Stream Auto print Manual print Command Comparison data + Gross ; Outp
DATA TRANSFER MODE There are five kinds of data transfer modes for RS-232C/422/485; “stream,” “auto print,” “manual print,”,“command”, and “output per sampling.” [Stream], [Auto Print], and [Manual Print] The functions of these transfer modes are the same as described in 8-3 Standard Serial Output. [Command] This mode analyzes the “command” received from the host computer, etc. provides relevant processing, and responds with a result.
Accumulation data format Example Accumulated weight Weight + Overflow Weight Overflow Accumulated count Counts + Overflow Header -1 8 Digits Including Data, Polarity, and Decimal Point T W , + 0 1 2 3 4 5 6 . 7 8 k g CR LF T W , + SP SP SP SP SP SP SP . SP SP k g CR LF T W , - SP SP SP SP SP SP SP . SP SP k g CR LF T N , + 0 1 2 3 4 5 6 7 8 9 SP SP CR LF T N , + SP SP SP SP . SP SP .
HOW TO USE THE COMMAND MODE In the command mode, a “command” is transmitted from an external unit to the AD-4401, the AD-4401 operates in compliance with the command and responds with a result. When the command is not accepted due to an error (improper command or faulty data), a “negative acknowledgment” is made. The communication procedure differs depending on the command. Command Name RW (Request Weight) RB (Req.
Type of Response Description Communication procedure A: Repeats the command as it is. Communication procedure B: Returns the data. Communication procedure C: Returns the command as it is and waits to receive the data.
9-4 OP-05 SETPOINT UNIT The OP-05 setpoint unit is a thumbwheel switch unit designed for setting the setpoints exclusive for Batch weighing and Loss-in-weighting use. By connecting this option to the AD-4401, each setpoint can be set with the thumbwheel switch on the panel or the BCD input. Since up to 10 of these optional units can be connected in series, the setpoints can be easily switched through an external unit.
CONNECTION When the power supply is not connected, this instrument can be set with the thumbwheel switch on the front panel. When this is done, set the INT/EXT selector switches to INT. When the BCD input or serial connection is required, connect the power supply and short the CONT terminal. This instrument is selected and the SELECT lamp is turned on. If the INT/EXT selector switch is set to INT, the thumbwheel switch will be selected, and if set to EXT, external setting input (BCD IN) will take effect.
USING THE EXTERNAL SETTING INPUT External setting input for final, free fall, and preliminary is enabled by setting their respective INT/EXT selector switches to EXT. It is of BCD code and negative logic, and its level is about 10 V. Drive it with an open collector input or no-voltage (shorting type) contact input. When using a relay, pay attention to the minimum applicable load.
9-5 OP-07 ANALOG OUTPUT The OP-07 analog output option is for sending the weight data to an analog input unit. The output is a 4 to 20 mA current output proportional to the display reading. The output data is updated in synchronization with the display update. ANF- Name Default 01 Output data 1 02 03 Weight value at 4 mA output Weight value at 20 mA output 0 16000 Setting Description Same as display Gross Net Parameter 1 2 3 -999999 to 9999999 The position of decimal point is set in CALF-02.
CHAPTER 10 MAINTENANCE 10-1 CHECK MODE ENTERING CHECK MODE The check mode is intended to check the operations of the indicator, key switches, and external input/output. Step 1 Step 2 Step 3 With the [ENTER] key pressed and held, press the [SETPOINT] key. “Fnc” is displayed to indicate that the indicator is entering the general function mode. Release both keys. Note: When entering the function mode is not wanted, press the [ESC] key. The indicator will return to the normal mode.
Item checked Key Switches Control I/O Standard Serial Output OP-01 BCD OP-03 (RS-422/-485), OP-04 (RS-232C) Setpoints and OP-05 Setpoint Unit OP-07 Analog Output Checking procedures Display (O) Mark of the pressed key moves upward. (O) Mark of the ON-terminal moves upward.
10-2 INITIALIZATION Initialization is the operation to return the contents of the RAM and EEPROM to the initial factory values. There are three kinds of initialization modes, depending upon their ranges. RAM initialization mode General function initialization mode All data initialization mode Initializes the RAM only. Since the zero compensation value, tare value, setpoint, accumulated weight, and accumulated times are stored in the RAM, they are all cleared to zero.
CHAPTER 11 SETTING LISTS Use the settings list as a quick reference for maintenance of your AD-4401. When consulting with your A & D representative, let them know the user set values. 11-1 GENERAL FUNCTIONS BASIC FUNCTIONS FNCF01 Name Key switch disable User’s Default 00000000 Parameter 00000000 to 11111111 0 0 1 None Print command for manual print Hold * Batch Start * Emergency stop Clear to zero Clear tare Clear accumulation lb-kg conv.(USA ver.) 20 times/sec 10 times/sec 5 times/sec.
WEIGHING SEQUENCE FUNCTIONS SQF01 Name Selection of comparison weight 02 Automatic accumulation 03 Automatic free fall compensation User’s Default 1 0 Setting Parameter 1 2 Display count 0 1 2 No Automatic accumulation Accumulates only acceptable weight Accumulates all values No automatic free fall Only effective in Batch compensation weighing mode Moving average of last four times. Only effective in Fuzzy automatic free Built-In-Automatic Program fall compensation mode.
SQF12 13 14 15 16 17 18 19 20 21 22 Name Dribble-flow comparator inhibitor timer Judgment wait timer Batch Finish output width Batch monitoring timer Supplementary Flow open timer Supplementary Flow close timer Discharging start wait timer Discharging valve close wait timer Discharging time monitor timer Add the final to zero band setting Add the final to full setting User’s Default Setting Parameter Description 0.0 0.1 N/A 0.0 to 25.5 (In step of 0.1 second) 0.0 0 0.
CONTROL I/O INPUT FUNCTIONS INF-01: Capability of Input Terminal A1 INF-02 : Capability of Input Terminal A2 INF-03: Capability of Input Terminal A3 INF-04: Capability of Input Terminal A4 INF-05: Capability of Input Terminal A5 INF-06: Capability of Input Terminal A6 Setting Default Parameter Description 0 No capability 1 Zero 2 Tare 3 Batch start 4 Emergency stop 5 Discharge start 6 Key enable 1 2 3 4 5 6 7 Automatic free fall command 8 Disable thumbwheel switch read 9 Clear tare 10 Accumulation command 1
STANDARD SERIAL OUTPUT FUNCTIONS SIF- 01 Name User’s Output Data Setting Default 1 Parameter 1 2 3 4 5 6 7 8 02 Data transmitting mode 1 03 Baud rate 2 1 2 3 1 2 Description Displayed weight Gross Net Tare Gross/Net/Tare Accumulated weight Accumulated counts Accumulated weight /Accumulated counts Stream mode Auto-Print mode Manual-Print mode 600 bps 2400 bps A & D standard format Accumulation data format ” OP-01 BCD PARALLEL OUTPUT FUNCTIONS BCDF- 01 02 03 04 Name Output data Data tr
OP-03 RS-422 / OP-04 RS-232C FUNCTIONS RSF- 01 Name User’s Default Output data 1 Parameter 1 2 3 4 5 6 7 8 02 Data transfer mode 1 2 3 4 1 5 6 03 Baud rate 5 04 Parity 2 05 06 07 08 09 Character bit length Stop bit length 1 2 3 4 5 6 0 1 2 7 8 1 2 1 2 1 7 1 Terminator 2 RS-422/ RS-485 switching Address number 1 Setting Description Displayed weight Gross Net Tare Gross/Net/Tare Accumulated weight Accumulated counts Accumulated weight/ Accumulated counts Stream Auto print Manual pri
11-2 CALIBRATION RELATED FUNCTIONS User’s Setting CALF- Name 01 Weighing Unit 2 02 Decimal Point Position 0 Default Parameter 0 1 2 3 4 0 1 2 2 10 3 10 4 1, 2, 5, 10, 20, or 50 03 Minimum Division 1 04 Capacity 16000 0 to 800000 05 Zero Range 2 0 to 30 06 Zero Tracking Time 0.0 0.0 to 5.0 07 Zero Tracking Width 0 0 to 9 08 Motion Detect Time 1.0 0.0 to 5.
CALF- 12 13 Name Standard Serial Output; Output When Weight Value Is Overflowing or Unstable RS-232C/-422/-485 ; Output When Weight Value Is Overflowing or Unstable User’s Setting Default 1 Parameter 0 1 0 1 Does not output when the weight value is overflowing or unstable.
APPENDIX DIMENSIONS AD-4401 OP-05 85
86
87
88
