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AD-4401
WEIGHING INDICA TOR
1 3 8 6 - 2 A - I E
© 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 C ONVERTER B LOCK
2-2 D IGITAL B LOCK
2-3 G ENERAL S PECIFICATIONS
2-4 A
CCESSORIES
2-5 F RONT P ANEL
2-6 R EAR P ANEL
CHAPTER 3 INSTALLATION AND CONNECTIONS ................................................................ 11
3-1 E
NVIRONMENT
3-2 P OWER S UPPLY
3-3 L OAD C ELL
CHAPTER 4 OPERATION.......................................................................................................... 13
4-1 O
PERATION
M
ODE
4-2 C ONFIRMATION OF O PERATIONS
.......................................................................................... 14
4-3 S ETTING A S ETPOINT
CHAPTER 5 CALIBRATION ...................................................................................................... 18
5-1 G
ENERAL
D
ESCRIPTION
5-2 A CTUAL L OAD C ALIBRATION (CAL
SET)............................................................................... 19
5-3 C ALIBRATION R ELATED F UNCTIONS
...................................................................................... 20
5-4 C ALIBRATION E RRORS
5-5 I
NITIALIZATION OF
A
LL THE
D
ATA
.......................................................................................... 24
CHAPTER 6 GENERAL FUNCTIONS ....................................................................................... 25
6-1 B ASIC C APABILITIES R ELATED
.............................................................................................. 26
6-2 W EIGHING S EQUENCE R ELATED
........................................................................................... 28
6-3 C
ONTROL
I/O I
NPUT
R
ELATED
.............................................................................................. 30
6-4 C ONTROL I/O O UTPUT R ELATED
.......................................................................................... 30
6-5 S TANDARD S ERIAL O UTPUT R ELATED
.................................................................................. 31
1
CHAPTER 7 WEIGHING SEQUENCE ....................................................................................... 32
7-1 WEIGHING
7-2 C USTOMER P ROGRAMMED C ONTROL M ODE
......................................................................... 33
7-3 B UILT IN A UTOMATIC P ROGRAM M ODE
................................................................................. 35
7-5 C
HECK
W
EIGHING MODE
7-6 C OMPARISON W EIGHT
7-7 A UTO P RINT
7-8 A UTOMATIC ACCUMULATION
................................................................................................. 51
7-9 A
UTOMATIC
F
REE
F
ALL
C
OMPENSATION
............................................................................... 52
7-10 F UZZY A UTOMATIC F REE F ALL C OMPENSATION
.................................................................. 52
CHAPTER 8 INTERFACE........................................................................................................... 53
8-1 C ONTROL
8-2 S
ETPOINT
8-3 S TANDARD S ERIAL O UTPUT (SER.
OUT) ............................................................................. 57
CHAPTER 9 OPTIONS ............................................................................................................... 60
9-1 OP-01 P ARALLEL BCD O UTPUT
.......................................................................................... 60
9-2 OP-03 RS-422/-485 I
NTERFACE
......................................................................................... 62
9-3 OP-04 RS-232C I NPUT /O UTPUTS
....................................................................................... 64
9-4 OP-05 S ETPOINT U NIT
9-5 OP-07 A NALOG O UTPUT
CHAPTER 10 MAINTENANCE................................................................................................... 74
10-1 C HECK M ODE
10-2 I NITIALIZATION
CHAPTER 11 SETTING LISTS .................................................................................................. 77
11-1 G
ENERAL
F
UNCTIONS
11-2 C ALIBRATION R ELATED F UNCTIONS
.................................................................................... 83
APPENDIX DIMENSIONS .......................................................................................................... 85
2
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.
Digital Span Capability
• Capable of calibration by inputting a mV/V value without an actual load.
• Capable of directly reading a load cell output (mV/V), for easy installation and maintenance.
• Replaceable without re-calibrating with an actual load in case of trouble.
Flexible Digital Filter allows installation in unstable environments
• Excellent vibration canceling performance.
• Widely covers from high-speed hopper scales to platform scales.
Two-stage Indicators monitoring Tare, Final, and Accumulated Weight values at any time.
Eight Weighing Modes available for wider applications
Capable of being used in a PLC-free hopper system owing to a complete weighing sequence.
• Built-in discharging sequence
• Monitors loading and discharging times
• Supplementary flow capability
Setpoints can be set using RS-232C/422/485 (Optional) as well as the front panel keys or an external thumbwheel switch.
Control I/O providing a selection of the input/ output terminal capabilities and is available for any system.
High-speed, high-accuracy hopper scale based on Fuzzy Automatic Free Fall Compensation.
3
CHAPTER 2 SPECIFICATIONS
2-1 A/D CONVERTER BLOCK
Input sensitivity
Zero correction range
Load Cell Excitation
Temperature coefficient
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)
Zero point ±(0.2 µV + 0.0008 % of Dead Load ) / °C typ
Sensitivity ± 0.0008 % / °C typ
Maximum measurement voltage
Internal resolution
Maximum display resolution
Sampling speed
32 mV (3.2 mV/V)
Approx. 1/1,000,000
16000
100 times/second
2-2 DIGITAL BLOCK
Display element
Main display section
Subdisplay section
Status display section
Operational Keys
Fluorescent display tube (Display color: Cobalt blue, Status display in orange)
Display types;
1) Main display section: 7-segment 7-digit, Character height: 13 mm
2) Subdisplay section: 7-segment 8-digit, Character height: 7 mm
3) Status display: Up to 14 "-" marks are displayed
Switchable between net weight and gross weight
Display range: 0 to 16000D (Minimum division D is selectable out of 1, 2, 5, 10, 20, and 50)
Decimal point: Capable of setting 10
1
, 10
2
,10
3
, and 10
4
digits
Overflow display: All digits turned off ("-" is displayed in the highest digit in case of negative polarity)
Units: g, kg, t (international version), kg, lb (USA version).
Tare, final, and accumulated weight values are selectable by the function. Also available for
Calibration setting, function setting, and error display.
Zero point, stability, gross, net, hold, , alarm, final, free fall, preliminary, optional preliminary, overlimit, underlimit, and zero band depending on the weighing mode
SETPOINT, ZERO, TARE, NET/GROSS, F, ENTER, OPR/STB, CAL
2-3 GENERAL SPECIFICATIONS
EXTERNAL INPUT/OUTPUT
Control
I/O
Setpoint
Input
Output
Standard serial output
6 points (6 bits, 1 COM)
Dry contact or open collector signal
Insulated from an internal circuit by an optocoupler.
*Terminal functions selectable by the function settings
8 points (8 bits, 1 COM)
Open collector output (NPN transistor)
Rating: 30 V DC, 50 mA (Resistance load)
Saturation voltage between a collector and emitter: 1.2 V or less
Insulated from an internal circuit by an optocoupler.
*Terminal functions selectable by the function settings
Output for our peripheral device connection (0 to 20 mA current loop signal)
Changes setting of each setpoint, using a thumbwheel switch. Capable of connecting an OP-05 setpoint unit in addition to the thumbwheel switch. Input
4
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.
Tracking time: 0.0 to 5.0 (seconds)... A range can be set freely
Tracking width: 0.0 to 4.5 (D) ... A range can be set freely
Clears the net weight zero in compliance with a command from the TARE key, Control I/O, etc.
Capable of enabling or disabling operations at unstable time or negative weight time.
The battery backs up a tare value.
Adjustable range: gross
≤ Weighing capacity
When a weighed value fluctuation amount per sampling enters a set width within a set time, a stability mark is illuminated, judging it a stable condition.
Capable of confirming stability through Control I/O.
Stability detection time: 0.1 to 5.0 (seconds) ... A range can be set freely
Stability detection width: 0 to 9 (D) ... A range can be set freely
Digital filter function
Integrating capability
Two digital filters connected in series
Cutoff frequency range: 0.7 to 11 (Hz)
Integrating capability
Integrates the net weight automatically or manually.
An accumulated weight and the number of accumulated weighing times are backed up by the battery.
Accumulated weight range: 0 to 99999999
Accumulated weighing times range: 0 to 99999999
OVERALL
Power failure countermeasure
Data backup method
Supply voltage
Power consumption
Working temperature and humidity range
Mounting method
Weight (accessories not included)
2-4 ACCESSORIES
Parts Name
Fuse
Connector for Control I/O
Zero point correction value, tare value, setpoint, accumulated weight
Memory backup by the lithium battery (Approx. 10 years)
An alarm indicator lamp is turned on when the battery is running out.
Calibration data, each function data
Writes into the non-volatile memory(EEPROM).(Up to 10,000 times)
100 to 120 VAC +10%/-15%, 50 Hz or 60 Hz
200 to 240 VAC +10%/-15%, 50 Hz or 60 Hz
Approx. 30 VA
-5 to +40 °C, 20 to 85 % R.H
Panel mounting type
Approximately 1.3 kg
Q'ty A&D’s parts Number
1 FS-EAK-1A
1 JI-361J016-AG
1 JI-360C016-B
Description
EAK-1A (Time lag fuse, 1 A)
FCN360C016-B (FUJITSU)
Capacity plate
Unit label
Panel mount packing
Terminal block cover
Rubber leg
1
1
1
1
4
N/A
N/A
N/A
N/A
N/A
5
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).
[MD]
Illuminated when the weight value is unstable. The motion condition can be changed using a " calibration related function."
[GROSS]
Illuminated when the displayed weight is the gross weight.
[NET]
Illuminated when the displayed weight is the net weight.
[HOLD]
Illuminated when the weight display is being held. Either normal hold or peak hold can be selected using the "general functions."
[ ]
This display capability can be changed depending on the application and selected using the “general functions.”
[ALARM]
Illuminated in case of zero range error, weighing capacity overflow, or low battery.
6
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. FALL]
Blinks while setting the free fall.
Normal batching —— Illuminated when the net weight is more than the final weight minus free fall.
Built-in-automatic program mode —— Illuminated during dribble flow.
[PRELIM]
Blinks while setting the preliminary.
Normal batching —— Illuminated when the net weight is more than the final weight minus preliminary.
Built-in-automatic program mode —— Illuminated during medium flow.
[OP PLM]
Blinks while setting the optional preliminary.
Normal batching —— Illuminated when the net weight is more than the final weight minus optional preliminary.
Built-in-automatic program mode —— Illuminated during full flow.
[OVER]
Blinks while setting the overlimit.
Illuminated when the net weight is more than the final weight plus overlimit.
[UNDER]
Blinks while setting the underlimit.
Illuminated when the net weight is less than the final weight minus underlimit.
[ZERO BAND]
Blinks while setting the zero band.
Illuminated when the gross weight is less than the zero band.
< Loss-in-weight >
Attach a label that has “OPTIONAL PRELIMINARY replaced by “FULL.” The other operations are the same as normal batching.
[FULL]
Blinks while setting the full weight./ Illuminated when the gross weight is more than the full weight.
7
< 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.
Illuminated when the comparison result output, Go, is turned on.
[Hi]
Blinks while setting the Hi limit.
Illuminated when the comparison result output, Hi, is turned on.
[Hi-Hi]
Blinks while setting the Hi-Hi limit.
Illuminated when the comparison result output, Hi-Hi, is turned on.
8
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. ” While inputting a number, this key is used to shift the blinking digit to the left.
[TARE] ([>])
The key used to subtract the tare. The tare subtraction condition can be set with the “calibration related functions.”
While inputting a number, this key is used to shift the blinking digit to the right.
If the [ON/OFF] key is pressed together with this key in the OFF mode, the zero compensation value and the tare value will be cleared.
[GROSS/NET] ([^])
The key used to switch the weight display from gross weight to net weight and vice versa. While inputting a number, pressing this key will increase the number of the blinking digit by one.
[F] ([V])
The capability of this key can be changed depending on the application. The following capabilities can be selected using the “general functions.”
No capability (Setting upon shipment)
Print command for manual print
Hold
Batch Start
Emergency stop
Clear to zero
Clear tare
Clear accumulation
While inputting a number, pressing this key decreases the number of the blinking digit by one.
[ENTER]
While inputting a number, pressing this key writes that number into memory.
[OPR/STB] ([ESC])
The key used to switch from the normal mode (ON state) to the standby mode (OFF state) and vice versa. In the standby mode, all displays and external inputs/outputs are turned off and a circle (O) appears in the unit display section.
While inputting a number, this key serves as the [ESC] (Escape) key.
TOP OF FRONT PANEL
The top of the front panel has a concave area for attaching a weighing capacity nameplate.
,+.* /-,*
9
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).
(d) One of the following options can be attached;
OP-01 BCD output, OP-03: RS-422/-485 input/output, OP-04: RS-232C input/output
(e) Connects to the power source. Confirm the description on the supply voltage label. See 3-2.
(f) Provides an analog output if option OP-07, analog output, is attached. Use a shielded cable for wiring.
(g) Connects to the load cell. Use a shielded cable for wiring. See 3-3.
Be sure to attach a cover to the terminal block on the rear panel in order to prevent an accident.
10
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
This is a precision electronic instrument. Handle it very carefully. working temperature range is -5 to +40°C. Install it in a place free the direct sunlight. When water drops may splash over the instrument, attach it to a control panel, using the accessory packing. This makes the instrument's front panel splash-proof.
,0938
+<623 -068
/0;53:
.1:3=
The from
3-2 POWER SUPPLY
1) Prior to connecting the power source, read this manual thoroughly.
2) Be sure to earth ground the instrument. Use independent grounding if possible. Try not to share grounding with other electric devices that create electrical noise.
3) The power source should be either 100 to 120 VAC +10%/-15% specification, or 200 to 240 VAC +10%/-15% specification; with a frequency of 50 or 60 Hz. Use a stable power source free from instantaneous dropout or noise. Sharing a power line could result in malfunctioning.
4) The load cell output is very weak. Do not install any noise-generating device near the load cell or the load cell cables.
5) Each input/output cable should be shielded and connected to either shield terminal 7 or 10 of the terminal strip on the rear of the indicator. Use of terminal 11 or the indicator body, could induce electrical noise.
Terminal No. Terminal Function
1
2
EXC+
SEN+
Load cell excitation voltage (+)
Sensing input (+)
3
4
5
6
SEN-
EXC-
SIG+
SIG-
Sensing input (-)
Load cell excitation voltage (-)
Load cell input (+)
Load cell input (-)
Load cell Connections
8
9
A+
A-
4 to 20 mA output (+)
4 to 20 mA output (-) OP-07
11 E FG
12
13
AC
AC
AC power supply
AC power supply
11
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. 4 (load cell applied voltage - and sensing input -).
12
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.
.
13
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. A weight value may not be displayed if calibration has not been performed yet.
When only a circle (O) is displayed in the unit display section, the indicator is in the OFF mode. Press the [OPR/STB] key.
CALIBRATION
The following outlines on how to calibrate the indicator. For details, see Chapter 5.
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.
Note: When calibration is not required, press the [ESC] key and the indicator will return to the normal mode.
Step 2 Press the [ENTER] key. The indicator has entered the calibration mode and “CAL SEt” is displayed.
The right most digit starts blinking.
Step 3
Step 4
To select the desired operation, use the [
∧ ] or [ ∨ ] key, Press the [ ∧ ] key, “CAL Fnc” is displayed.
Press the [ENTER] key. The indicator enters the calibration related function mode. The main display section displays “CALF-01” and the sub-display section displays its set value. CALF-01 indicates the setting of the unit.
Step 5 Select the function number you want to set, using the [
∧ ] or [ ∨ ] key. The lower display section displays the set value for the selected function. CALF-02 indicates the setting of a decimal point position.
Step 6 In this example, you change the decimal point position to the 10
Subdisplay section now starts blinking.
1 digit. Press the [ENTER] key. The
Step 7
Step 8
Press the [
∧ ] key. The Subdisplay section displays “1”.
Press the [ENTER] key. The main display section starts blinking again and you are returned to Step 5, the selection of a function number.
Step 9 Press the [ESC] key. The main display section starts blinking again and the settings so far are saved in the EEPROM.
This state is the same as in Step 3. Press the [ESC] key again twice. The indicator will return to the normal mode.
Step 10 Subsequently, calibrate with an actual load. Press the [ENTER] key. The main display section displays
“CAL 0.”
Step 11 With no weight placed on the system and press the [ENTER] key after the motion-detect mark is turned off. The Subdisplay section displays “——” for about 2 seconds.
14
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.
Step 14 The main display section displays “CAL End.” If “C ErrXX” has been displayed so far, there is an error taking place. See 5-5.
Step 15 Press the [ESC] key. The main display section displays “CAL SEt” and the actual load calibration data is saved in the EEPROM.
Step 16 This state is the same as in Step 3. Press the [ESC] key again twice. The indicator will return to the normal mode.
The normal mode is restored and the weight value is displayed.
After calibration is finished, be sure to attach the [CAL] key cover.
4-3 SETTING A SETPOINT
The setpoint refers to a weight setting such as a target weight or final weight required for a weighing sequence. The following describes how to set the setpoint. For the details of the thumbwheel switches, see 8-2.
The following four methods are available for setting the setpoint:
1. Setting with the key switches (Thumbwheel switch not required)
2. Setting with a 5-digit thumbwheel switch
3. Setting with a 16-digit thumbwheel switch or OP-05 setpoint unit
4. Setting with the RS-232C/-422/-485 (See 9-2, 9-3)
Select one of the above-mentioned methods in the “setpoint read mode (SPF-01)” of the general functions.
All of the setpoint settings are backed up by the memory battery and held even if the power is turned off.
The setpoint differs depending on the weighing mode. When the weighing mode (CALF-14) is changed, attach a relevant accessory label onto the specified area of the front panel. The following describes the initial setting state and no label is required to be attached.
15
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.
• If the [SETPOINT] key is pressed while the right end (ZERO RANGE) is being displayed, you will be returned to the normal mode.
• Pressing the [ESC] key returns you to the normal mode at any time.
Step 2
Step 3
Press the [ENTER] key. The blank digits of the Subdisplay section are filled with the character “0”.
A cursor appears at the lowest digit and the right most digit starts blinking.
Rewrite the set value, using the [<], [>], and [ V ] keys
• In this example, the set value has not been saved internally.
• When you want a negative set value in Check Weighing, and so on, move the cursor to the left end and use the [ V ] key to decrement 0.
Step 4 Press the [ENTER] key. The set value is saved internally. Surplus zeros and the cursor disappear.
• This state is the same as in Step 1.
• To return to the normal mode, press the [ESC] key.
SETTING WITH A 5-DIGIT THUMBWHEEL SWITCH (SPF - 01 = 1)
In the normal mode, the 5-digit thumbwheel switch is read as the final value in real time. Using this thumbwheel switch, you can set other setpoints.
When the setting of the minimum graduation (CALF-03) is 10 or more, the value of the thumbwheel switch is multiplied by
10 when saved.
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.
• If the [SETPOINT] key is pressed while the right end (ZERO RANGE) is being displayed, you will be returned to the normal mode.
• Pressing the [ESC] key returns you to the normal mode at any time.
Step 2 In this example, a free fall is set. Press the [SETPOINT] key. The “-” mark above FREE FALL blinks and a free fall value is displayed.
Step 3 Change the thumbwheel switch to the desired value and press the [ENTER] key. The value of the thumbwheel switch is saved internally as the free fall.
• This state is the same as in Step 1. To return to the normal mode, press the [ESC] key.
Note: Prior to returning to the normal mode, be sure to return the value of the thumbwheel switch
to the final value.
16
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. The following shows assignment of the setpoints.
Normal Batching (Customer Programmed Control Mode)
Normal Batching (built-in Automatic Program Mode)
(CALF-14=1)
(CALF-14=3)
For the thumbwheel switches Final (5 digits), Free Fall (3 digits), Preliminary (4 digits) Over Limit (2 digits),
Under Limit (2 digits)
For the key switches Option Prelim, Zero Band
Loss-in-weight (Customer Programmed Control Mode)
Loss-in-weight (built-in Automatic Program Mode)
For the thumbwheel switches
For the key switches
Check Weighing Mode 1
Full, Zero Band
(CALF-14=5)
(CALF-14=6)
(CALF-14=2)
(CALF-14=4)
Final (5 digits), Free Fall (3 digits), Preliminary (4 digits)
Over Limit (2 digits), Under Limit (2 digits)
Check Weighing Mode 2
For the thumbwheel switches
For the key switches
Lo (5 digits), Hi (5 digits)
Zero Band, Lo-Lo, Hi-Hi
Check Weighing Mode 3
For the thumbwheel switches
For the key switches
Check Weighing Mode 4
(CALF-14=7)
Lo-Lo (4 digits), Lo (4 digits), Hi (4 digits), Hi-Hi (4 digits)
Zero Band
(CALF-14=8)
* For setting with the front panel keys, see “Setting with the Key Switches (SPF - 01 = 0).”
* When the minimum graduation setting (CALF-03) is 10 or more, 10 will multiply the value set with the thumbwheel switch.
17
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
Initialization of all data
Digital span
Actual load calibration
This is calibration with weights.
[Zero calibration] The zero point is measured with no weight loaded.
[Span calibration] The full weighing capacity point is measured with a calibration weight loaded.
• Once in the calibration mode, the tare value and zero compensation value are cleared automatically.
Calibration related functions
Digital span
They set the data directly related to weighing as well as basic constants for the weighing instrument such as minimum graduation, weighing capacity, and so on.
The zero point and span are set by entering the load cell output (mV/V) using the keys.
No calibration weight is loaded. (CALF-15 ~ CALF-17 of the Calibration related functions,)
• [Zero calibration]
• [Span calibration]
Enter the load cell output at the zero point.
Enter the difference of the load cell output between at the full weighing capacity and at the zero point.
• Weight to Span calibration Relate the input voltage at [Span calibration] above with weight to be displayed.
Initialization of all data All the data of the EEPROM and RAM are initialized.
• All the data set in calibration is saved in the EEPROM and held even if the backup battery is fully discharged.
• Do the all load cell wiring before turning the power on. Calibration may be failed if wired after turned on.
18
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.
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.
• Note: When calibration is not required, press the [ESC] key. The indicator will return to the normal mode.
Step 2 Press the [ENTER] key. The indicator has entered the calibration mode and “CAL SEt” is displayed.
The right most digit starts blinking.
ZERO CALIBRATION
Step 3 Press the [ENTER] key. The main display section displays “CAL 0.”
When you want to monitor the current weight value, press the [SETPOINT] key. The Subdisplay section displays the value. Pressing the [SETPOINT] key again erases this display.
When zero calibration is not necessary, press the [F] key. The indicator will go to span calibration
Step 4 With no weight placed on the system, press the [ENTER] key after the motion-detect mark is turned off.
The Subdisplay section displays “——” for about 2 seconds.
• When “C ErrXX” is displayed, there is an error taking place. See 5-4.
SPAN CALIBRATION
Step 5 The main display section displays “CAL SPn,” the Subdisplay section displays the 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 [ ∨ ] keys.
When you want to monitor the current weight value, press the [SETPOINT] key. The Subdisplay section displays the value. Pressing [SETPOINT] again replaces this display with the weight value.
Step 6
When span calibration is not necessary, press the [ESC] key twice. You are returned to the normal mode.
Place the calibration 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.
• When “C ErrXX” is displayed, there is an error taking place. See 5-4.
The main display section displays “CAL End.” Step 7
When you want to readjust the span, press the [F] key. This will allow you to continue span calibration.
Step 8 Press the [ESC] key. The main display section displays “CAL SEt” and the actual load calibration data is saved in the EEPROM.
Step 9 This state is the same as in Step 3. Press the [ESC] key once again. The indicator will return to the normal mode and the weight value is displayed.
19
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. The indicator switches to the calibration mode and “CAL SEt” is displayed. The right most digit starts blinking.
Step 3
Step 4
Press the [] key. “CAL Fnc” is displayed.
Press the [ENTER] key. The indicator switches to the calibration related function mode. The main display section displays “CALF-01” and the Subdisplay section displays its set value. CALF-01 is the function for the setting of the unit.
Step 5 Select the function number you want to set, using the [<], [>], [
∧ ] , and [ ∨ ] keys. The display section displays a set value for the selected function. In this example, select CALF-02 to set the decimal point position.
Step 6 In this example; you change the decimal point position to the 10 1 digit. Press the [ENTER] key. The
Subdisplay section now starts blinking.
Step 7
Step 8
Press the [] key. The Subdisplay section displays “1”.
Press the [ENTER] key. The main display section starts blinking again and you are returned to selection of the function number (Step 5).
Step 9 Press the [ESC] key. “CAL SET” is displayed and the settings so far are saved in the EEPROM.
Step 10 This state is the same as in Step 3. Press the [ESC] key once again. The indicator is return to the normal mode.
The normal mode is restored and the weight value is displayed.
• When “Err” is displayed, the value input exceeds the setting range.
• When “C ErrXX” is displayed, there is an error taking place. See 5-4.
20
CALIBRATION RELATED FUNCTIONS
CALF- Name
Default Parameter
2
3
Setting
0 None
1 g (International version)
Description kg ( International version and USA version) t (International version)
02
03
04
05
Decimal Point
Position
Minimum
Division
Capacity
Zero Range
0
1
16000
2
4 lb. ( USA version)
0 None
1
1 10
2
2
10
3
3
4
10
4
10
1, 2, 5, 10,
20, or 50
0 to 800000
12345
1234.5
123.45
12.345
1.2345
Minimum division (increment) for the weight value.
Input 1,2, 5, 10, 20, or 50(decimal point ignored).
Capacity of the weighing. Weighing is allowed up to this setting + 9D(9 divisions). A weight value beyond this limit is an overflow and not displayed.
0 to 30
A range of accepting "zero" from the [ZERO] key or
Control I/O. Represented in terms of percent(&) with respect to the weighing capacity, centering around the zero calibrated point in calibration. If this is set to 2, "zero" can be accepted within a range of the zero calibrated point
+/- 2 %.
Zero tracking is performed in combination with CALF-07
06
Zero Tracking
Time
Zero Tracking
Width
0 0 to 9
Its unit is seconds
Zero tracking is performed in combination with CALF-06 Zero
Tracking Time. It is not performed when set to 0. Its least input increment is 1/2D. (The width for setting of 1 is equivalent to 1/2 of the minimum graduation)
07
21
CALF- Name
Default Parameter
08
Motion
Detection Time
Motion
Detection
Range
2 0 to 9
Setting
Description
Motion is detected in combination with CALF-08 Motion Detection
Time. Its least input increment is 1D. (The range for setting of 1 is equivalent to the minimum division)
09
10
11
12
13
Tare and Zero at Unstable
Weight Value
Tare at
Negative gross
Standard Serial
Output; Output
When Weight
Value Is
Overflowing or
Unstable
RS-232C/-422/-
485; Output
When Weight
Value Is
Overflowing or
Unstable
1
1
1
1
1
2
3
4
5
6
7
8
0
1
0
1
0
1
0
0
1
1
"Tare" is not accepted when the weight value is unstable.
"Tare" is accepted even if the weight value is unstable.
"Tare" is not accepted when the gross weight is negative.
"Tare" is accepted even if the gross weight is negative.
Not available on the
USA version.
Does not output when the weight value is overflowing or unstable
Outputs even if the weight is overflowing or unstable
Does not output when the weight value is overflowing or unstable.
Outputs even if the weight value is overflowing or unstable
Normal batching
(Customer programmed control mode)
Loss-in-weight
(Customer programmed control mode)
Normal batching
(Built-in automatic program mode)
Loss-in-weight
(Built-in automatic program mode)
Check weighing 1
Check weighing 2
Check weighing 3
Check weighing 4
Batch
Weighing
For the hopper scale use
Check
Weighing
For the platform scale use
22
15
16
17
Zero Input
Voltage
Span Input
Voltage
(Capacity to zero)
0.000000
3.200000
Weight against
Span Input
Voltage
16000
0.000000 to
2.200000
0.000000 to
3.200000
0 to 800000
(decimal point ignored)
Input Voltage (mV/V) from the Load Cell at "Zero", which is determined in "Zero Calibration" with weights.
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.
When "Digital-Calibration", calibration not using weights, is performed, CALF-15 and CALF-16 also have to be done.
This setting will be changed to Capacity (CAL-04) if
"CAL Set" is done.
Note: Write down the value of CALF-15, and
CALF-17 on the setting list attached back of this manual for the maintenance purpose.
(Accuracy at replacement: approximately 1/500)
The scale can be calibrated with the stored value, CAL-15,CALF-17. (Digital span function approximately 1/1000) However it is recommended to use weights for a better accuracy.
23
5-4 CALIBRATION ERRORS
Err messages
CErr 0
CErr 1
CErr 2
CErr 3
CErr 4
CErr 5
CErr 6
CErr 8
CErr 7
Causes Solutions
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.
Confirm setting of the minimum graduation, CALF-03.
Confirm the relations between the weighing capacity, CALF-04, and minimum graduation, CALF-03.
Confirm the rating and connection of the load cell and see if the load cell is damaged.
When the load cell is connected properly and is not defective, the load cell output can be corrected by attaching a resistor as shown below, “Load cell output compensation”.
When it is likely that the load cell or A/D converter is defective, use the check mode in 10-1 to verify the problem.
The calibration weight is more than the weighing capacity.
The calibration weight is less than the minimum graduation
Sensitivity of the load cell is insufficient.
Calibrate with the proper calibration weights.
The output voltage of the load cell is too high with the span capacity loaded,
The voltage of the span calibration point is negative with respect to the zero point.
When “C Err 6” or “C Err8” is displayed after CALF-03 (Minimum division setting) and CALF-04 (Capacity setting) have been set, try to do the following settings for solution.
• Reset CALF-03.
• Reset CALF-04.
• Set CALF-16 to “3.200000 “.
• Set CALF-17 to the capacity weight.
Confirm the connection of the load cell.
LOAD CELL OUTPUT COMPENSATION
Attach a resistor to a place as shown in the picture below to compensate the load cell output.
• Use a resistor with as high resistance and low temperature coefficient as possible.
5-5 INITIALIZATION OF ALL THE DATA
This is to initialize all the data of the EEPROM and RAM. Therefore, the calibration data and general function data are also initialized. For the details, see 10-2.
24
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
Step 2
With the [ENTER] key pressed and held, press the [SETPOINT] key. “Fnc” is displayed to inform you that the indicator is entering the general function mode.
• Note: When you did not want to enter the function mode, press the [ESC] key. The indicator will return to the normal mode.
Press the [ENTER] key. The indicator will switch to the general function mode and the cursor appears at the letter, “c”.
Step 3 Select the target function group, using the [
∧ ] , and [ ∨ ] keys
After selecting the function group, press the [ENTER] key. (In this example, select Basic Capabilities
Related)
The main display section displays the function number and the cursor appears in the lowest digit. The
Subdisplay section displays a set value for the function.
Group Name
Basic Capabilities Related
Weighing Sequence Related
Control I/O Input Related
Control I/O Output Related
Standard Serial Output Related
Parallel BCD Output Related
RS I/O Related
Setpoint Value input Related
Analog Output Related
Symbol
Fnc
Sq in out si bcd rS
SP
An
Step 4 Using the [<], [>], [
∧ ] , and [ ∨ ] keys, select the function number you want to set. In this example, select
FNCF-02. For your information, FNCF-02 is a capability of the [F] key.
Step 5 In this example, set the [F] key to a “print command.” Press the [ENTER] key. The Subdisplay section starts blinking.
Step 6
Step 7
Press the [
∧ ] key. The Subdisplay section displays “1”.
Press the [ENTER] key. The main display section starts blinking and you are returned to Step 4, selection of the function number.
Step 8
Step 9
Press the [ESC] key. The function number disappears and you are returned to Step 2.
Press the [ESC] key again. The settings so far are saved in the EEPROM and the indicator is returned to the normal mode.
25
6-1 BASIC CAPABILITIES RELATED
FNC F- Name
Setting
Default Parameter Description
01
02
Key switch disable
Capabilities of
[F] Key
00000000
0
00000000 to
11111111
1 Disables
0 None
1 Print command for manual print
Hold
2 Hold function by the F key is not available if there is any set to “HOLD” in the Control I/O (see6-3).
Each bit corresponding to the relevant key.
This function is only available in the normal mode.
All keys are usable if keys are enabled in the Control I/O
(see6-3),
* Denotes exclusive for
Built-in automatic program mode.
8 lb-kg conv. (USA ver.)
03
Display Rewrite
Rate
1
04
Display Content of Subdisplay
Section
0
0 None
1 Gross
2 Net
3 Tare
4
5
Final value (target weight)
Accumulated weight
Paste the accessory label to the front panel in compliance with the display content.
26
FNCF- Name
05
“ “
Status display
Capability
Default Parameter
0 None
Setting
0
Description
"Discharging" is exclusively intended for normal batching (built-in automatic program mode).
Value of each digit and cutoff frequency
0: None
1: 11.0Hz
2: 8.0Hz
The digital filter is designed to suppress dispersion of a load cell output signal.
Two of them are connected in series as shown below.
06
Digital Filter
(Series connection of two digital filters.)
48
00 to
79
3: 5.6Hz
4: 4.0Hz
5: 2.8Hz
6: 2.0Hz
7: 1.4Hz
Low frequency components, which cannot be covered only by setting of the digital filters, can be dealt with by equivalently lowering the cutoff frequency of the digital filters at FNCF-07.
07
09
Sampling frequency dividing ratio.
Comparison stop at “hold”
1
1
0
8: 1.0Hz
9: 0.7Hz
1 to
10
Lower the cutoff frequency of the digital filters equivalently by reducing the specified sampling times to one.
During peak hold, the positive peak of the weight value is held.
0 No
1 Yes
In Built-in automatic program mode, do not set "1" because the weighing sequence stops when comparison stops.
27
6-2 WEIGHING SEQUENCE RELATED
01
02
Selection of comparison weight
Automatic accumulation
03
Automatic free fall compensation
04
Automatic free fall effective width.
05
06
07
08
Unstable
Dribble Flow
Timer
Overlimit/underl imit operation
Stability at judgment
Maximum number of supplementary flow times
1
0
0
0
3.0
2
1
0
Setting
See 7-6 for details.
1
2
0
1
2
0 to
99999999
0.0 to 25.5
(In step of
0.1 second)
1
2
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.)
Automatic free fall compensation is made if a loaded weight is within the final
+/- automatic free fall effective width.
If Dribble Flow-time is shorter than the setting, the preset
Free Fall is applied to the weighing instead of the
Auto-Free-Fall compensation.
Real-time comparison
Synchronized with Batch Finish
Output
See 7-8 for details.
Only effective in Batch weighing mode
Only effective in
Built-In-Automatic Program mode.
Only effective in Batch weighing mode.
Only effective in
Built-In-Automatic Program mode.
1 Required
0: Unused
0 to 255
Non-0: Set times
28
SQF- Name Default
Setting
Parameter Description
09
Batch start wait timer
0.0
Only effective in Built-In-Automatic
Program mode.
10
11
Full-flow comparator
Inhibiter timer
Medium-flow comparator
Inhibiter timer
0.0
0.0
0.0 to 25.5 (In step of 0.1 second)
Intentionally blank
Only normal batching(built-in automatic program mode) is effective
12
13
Dribble-flow comparator
Inhibiter timer
Judgment wait timer
0.0
0.1
0: Until next Batch start
14
15
16
Batch Finish complete output width
Batch monitoring timer
Supplementary flow open timer
0.0
0
0.10
0 to 255 (In step of 1 second)
0.01 to 2.55
(In step of
0.01 second)
Non-0: Set time
0: Unused
Non-0: Set time
Only effective in Built-In-Automatic
Program mode.
17
18
19
20
Supplementary flow close timer
Discharging start wait timer
Discharging valve close wait timer
Discharging time monitor timer
0.1
0.0
0.1
0
0.0 to 25.5 (In step of
0.1 second)
0 to 255 (In step of
1 second)
(Intentionally blank)
0: Unused
Non-0: Set time
Only normal batching(built-in automatic program mode) is effective
21
Add the final to zero band setting
0
0
Does not add the final
22
Add the final to full setting
0
0
1
Does not add the final
Adds the final
29
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.
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
Default
Setting
Parameter Description
1 Zero
2 Tare
1 2 3 4 5 6 7
8
Automatic free fall command
Disable thumbwheel switch read
11 Cancel previous accumulation
13 Hold
14 Print command for manual print
6-4 CONTROL I/O OUTPUT RELATED
OUT-01 through OUT-08 represent the output terminals B1 through B8, respectively. The content of setting is common to each terminal, but initial setting differs.
OUTF-01: Capability of Output Terminal B1
OUTF-02: Capability of Output Terminal B2
OUTF-03: Capability of Output Terminal B3
OUTF-04: Capability of Output Terminal B4
OUTF-05: Capability of Output Terminal B5
Default
OUTF-06: Capability of Output Terminal B6
OUTF-07: Capability of Output Terminal B7
OUTF-08: Capability of Output Terminal B8
Setting
Parameter Description
2
3
4
5
6
Underlimit / (Hi-Hi)
Overlimit / (Hi)
Full flow / [Full] / (Go)
Medium flow / (Lo)
Dribble flow / (Lo-Lo)
[ ] Loss-in-weighing
( ) Check-weighing
1 2 3 4 5 6 7 8
9 Stability
10 Online
14 Zero range error
30
6-5 STANDARD SERIAL OUTPUT RELATED
1
Setting
Description
5
6
7
1
2
Displayed weight
Gross
3 Net
4 Tare
8
Gross/Net/Tare
Accumulated weight
Accumulated counts
Accumulated weight /Accumulated counts
A & D standard format
Accumulation data format
02
Data transmitting mode
1 2 Auto-Print mode
2
31
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. The AD-4401 has 8 kinds of weighing modes; four kinds of “batch weighing” for the hopper scale and other 4 kinds of “check weighing” for the platform scale.
The weighing modes can be sorted into “customer programmed control mode” and “built-in-automatic program mode”, depending on their operations. The following describes their difference.
Customer programmed control mode
Always compares a weight to a setpoint and outputs its result to the Control I/O.
Built-in-automatic program mode
So that a hopper scale gate can be controlled by the AD-4401 alone, the control software conventionally contained in the
PLC is now incorporated in the weighing sequence.
Loading is initiated by a batch start signal from an external unit, and when the specified weight is obtained, a gate is closed and a loading result is judged.
The AD-4401 can also deal with a discharging sequence.
Weighing Mode CALF-14 Operation Application
1
Normal batching
(Customer programmed control mode)
Loss-in-weight (Customer
Batch
Weighing
Mode
Customer
Programmed Control mode (Real-time)
2
3
4 programmed control mode)
Normal batching (Built-in automatic program mode)
Loss-in-weight (Built-in automatic program mode)
Built-in automatic program mode
Hopper scale
5 Check weighing 1
6
7
Check weighing 2
Check weighing 3
Check
Weighing
Mode
Customer
Programmed Control mode (Real-time)
Platform scale
8 Check weighing 4
A sequence signal (comparison result) is output to the Control I/O. For the details of the Control I/O, see 8-1.
FUNCTIONING OF EACH WEIGHING MODE
The setpoints used in the weighing sequence are set with the keys, thumbwheel switches, and so on. The keys and
5-digit mode thumbwheel switch may be used in the same manner regardless of the weighing mode. When using the
16-digit mode thumbwheel switch, however, its digit distribution varies from one weighing mode to another. The following describes the functioning of each weighing mode and connection of the 16-digit mode thumbwheel switch.
32
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
Output Condition
Gross
≤ Zero band
Net
≥ Final - Optional preliminary
Net
≥ Final - Preliminary
Net
≥ Final - Free fall
Net > Final + Overlimit
Net < Final – Underlimit
FUNCTIONAL DESCRIPTION
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.
For the connection of the thumbwheel switch
(16-digit mode) for the setpoints, see 7-4.
1. First, press TARE to clear the display on the AD-4401 to zero.
2. Open gates G1 (full flow), G2 (medium flow), and G3 (dribble flow). The display on the AD-4401 is
incremented, and when it reaches optional preliminary its output is turned on and closes gate G1.
3. When the display reaches preliminary its output is turned on and closes gate G2.
4. When the display reaches final its output is turned on and closes gate G3. Now, one weighing cycle is completed and the AD-4401 display shows the final value, indicating that hopper 2 has been loaded with that weight. Use the overlimit/underlimit setting to check whether the weighing value is within limits.
5. When you open gate G4 to discharge into a container, you can use the setting of the zero range to make sure that the raw material has been completely discharged. However, the AD-4401 cannot control the discharge gate
G4.
33
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.
A setpoint signal output is turned off unconditionally when the operation mode is other than the normal mode.
For the connection of the thumbwheel switch
(16-digit mode) for the setpoints, see 7-4.
FUNCTIONAL DESCRIPTION
1. Initially, with the weighing hopper 2 being empty, the AD-4401 displays the zero range at the gross.
2. In this state, open gate G1. When the display on the AD-4401 reaches the Full (optional preliminary) set value, its output is turned on and closes gate G1. The weighing hopper 2 has now been filled with raw material.
3. Press TARE. The display on the AD-4401 is cleared to 0.
4. Open gates G2 and G3. The display of the AD-4401 is decremented, and when it reaches preliminary
Its output is turned on and closes gate G2.
5. When the display reaches final output is turned on and closes gate G3.
Now, one weighing cycle has completed and the display on the AD-4401 shows the final value, indicating that
receiving bin has been loaded with that weight. Use the setting of overlimit/underlimit to check whether the
weighing value is within limits.
5. When the volume of material left in the weighing Hopper 2 becomes less than Zero band, Zero band
Output signal is turned on.
Note: SQF-21/ SQF-22 setting enables to add automatically FINAL to ZERO BAND or FULL. Therefore there is always enough ingredient left in the hopper for a measurement.
34
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
Output Condition
Gross
≤ Zero band
Net
≥ Final - Optional preliminary
Net
≥ Final - Preliminary
Net
≥ Final – Free Fall
Net > Final + Overlimit
Net < Final-Underlimit
FUNCTIONAL DESCRIPTION
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.
Overlimit/underlimit is activated based on the net upon batch finish. (May be changed to real-time operation)
The zero range is a customer programmed control mode operation.
For the connection of the thumbwheel switch
(16-digit mode) for setpoints, see 7-4.
1. The instrument is waiting for a batch start signal or discharging start signal to be input.
2. When the batch start signal is input, the Batch Start wait timer starts.
3. When the Batch Start wait timer completes the set time;
• Full-flow, medium-flow, and dribble-flow output signals are turned on.
• The full-flow comparator inhibitor timer starts.
• The Batch monitoring timer starts.
4. When the weight reaches optional preliminary setting:
• The full-flow output is turned off.
• The medium-flow comparator inhibitor timer starts.
5. When the weight reaches preliminary' setting:
• The medium-flow output is turned off.
• The dribble-flow comparator inhibitor timer starts.
6. When the weight reaches free fall setting:
•The dribble-flow output is turned off.
• The judgment wait timer starts.
7. When the weight has stabilized after the judgment wait timer completes the set time;
• If automatic free fall compensation is being used, its calculation will be made.
• The Batch Finish output signal is turned on.
• If there is excess or shortage, a judgment result output signal (overlimit or underlimit) will be turned on.
• The Batch monitoring timer is reset.
• The net is accumulated automatically.
• The data is output from the interface set for auto print.
8. If the discharging start signal is input, the discharging start wait timer will start.
9. When the discharging start wait timer completes the set time;
• The discharging output signal is turned on.
• The discharging time monitor timer starts.
10. When the gross becomes lower than the zero range;
• The discharging valve close wait timer starts.
• The discharging time monitor timer is reset.
35
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.
Note: In the case of built-in-automatic program mode batching, the setpoint data is held until batch finish since start of batching. Therefore, a setpoint altered during loading takes effect after batch finish is output.
36
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).
FUNCTIONAL DESCRIPTION
1. The instrument is waiting for the Batch Start signal or discharging start signal to be input.
2. When the external Batch Start signal is input, the Batch Start wait timer starts.
3. When the Batch Start wait timer completes the set time;
• Full-flow, medium-flow, and dribble-flow output signals are turned on.
• The full-flow setpoint disable, and the Batch monitoring timers start.
4. When the weight reaches optional preliminary setting:
• The full-flow output is turned off.
• The medium-flow comparator inhibitor timer starts.
5. When the weight reaches preliminary setting:
• The medium-flow output is turned off.
• The dribble-flow comparator inhibitor timer starts.
6. When the weight reaches free fall setting:
• The dribble-flow output is turned off.
• The judgment wait timer starts.
• The Batch monitoring timer is reset.
7. When the weight has stabilized after the judgment wait timer completes the set time;
• If automatic free fall compensation is being used, its calculation will be made.
If the net is insufficient;
• The dribble-flow output signal is turned on.
• The supplementary flow open timer starts.
8. When the supplementary flow open timer completes the set time;
• The dribble-flow output signal is turned off.
• The supplementary flow close timer starts.
9. When the supplementary flow close timer completes the set time;
• It is checked whether the net is insufficient, and if yes;
• The dribble-flow output signal is turned on.
• The supplementary flow open timer starts.
10. When the supplementary flow open timer completes the set time;
• The dribble-flow output signal is turned off.
• The supplementary flow close timer starts.
11. When the supplementary flow close timer completes the set time;
• It is checked whether the net is insufficient, and if not;
• The Batch Finish output signal is turned on.
• If a judgment result is overlimit, an overlimit output is turned on.
• The Batch monitoring timer is reset.
• The net is accumulated automatically.
• The data is output from the interface set for auto print.
12. If the discharging start input signal is turned on, the discharging start wait timer will start.
37
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. When the Batch Start 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 the same time.
38
LOSS-IN-WEIGHT (WEIGHING MODE CALF-14 = 4)
Output Terminal Output Condition
Zero band
Full (Hopper full)
Gross
≤ Zero band
Gross
≥ Final - Full
Medium flow
Dribble flow
- Net
≥ Final - Preliminary
- Net
≥ Final – Free Fall
Overlimit
Underlimit
- 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.
Once the medium flow and dribble flow are turned off, they are not turned on again until the next start of loading.
The overlimit/underlimit is activated based on the net upon batch finish. (Can be changed to Real-time mode operation)
The zero range is a customer programmed control mode operation.
For the connection of a thumbwheel switch (16-digit mode) for setpoints, see 7-4.
FUNCTIONAL DESCRIPTION
1. If the zero range signal is being output, replenish the raw material until a full signal is output.
2. Wait for stabilization and input a tare subtraction signal.
3. If a Batch Start signal is input, the Batch Start wait timer starts.
4. When the Batch Start wait timer completes the set time;
• The medium and dribble-flow output signals are turned on.
• The medium-flow comparator inhibitor timer starts.
• The Batch monitoring timer starts.
5. When the weight reaches preliminary setting:
• The medium-flow output is turned off.
• The dribble-flow comparator inhibitor timer starts.
6. When the weight reaches preliminary free fall setting:
• The dribble-flow output is turned off.
• The judgment wait timer starts.
7. When the weight has stabilized after the judgment wait timer completes the set time;
• If automatic free fall compensation is being used, its calculation will be made.
• The Batch Finish output signal is turned on.
• If there is an excess or shortage, the judgment result output signal (overlimit or underlimit) is turned on.
• The Batch monitoring timer is reset.
• The net is accumulated automatically.
• The data is output from the interface set for auto print.
Note:
SQF-21 and SQF-22 settings enable to add automatically FINAL to ZERO BAND or FULL. Therefore there is always enough ingredient left in the hopper for a measurement.
• In the case of built-in-automatic program mode batching, the setpoint data is held until batch finish since start of loading.
Therefore, a setpoint altered during loading takes effect after batch finish is output.
39
40
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.”
When the Batch Start signal is input while outputting the weighing completion signal
The Batch Start input is accepted and the weighing completion output is turned off.
To discharge prior to starting loading
Input the discharging start signal before the Batch Start signal. Begin with the discharging sequence.
When an emergency stop signal is input
Since the instrument waits for the Batch Start signal to be input, regardless of the running condition, all the loading signals and discharging signals are turned off. Also, a weighing sequence error signal is output. This signal is output continuously until the loading or discharging start signal is input.
When loading has taken more than the specified time, an alarm signal is output as follows
With the Batch monitoring timer, set the maximum expected loading time. If loading exceeds this time, each loading signal will be turned off and a weighing sequence error signal will be output. Input the Batch Start signal to reload, and input the discharging start signal to discharge.
Functioning of the comparator inhibitor timer
In order to prevent the medium-flow or dibble-flow gate from being closed by mistake due to fluctuations of the weight value resulting from vibration upon closing the full-flow gate, the weight value is not compared for the set time of the comparator inhibitor timer when the loading signal is changed.
Functioning of the medium flow when preliminary is set to 0
No medium flow is provided when preliminary is set to 0. Likewise, no full flow is provided when optional preliminary is set to 0. When free fall is set to 0, however, dribble flow is provided until the net exceeds the final.
Functioning of the medium flow and dribble flow when preliminary is set smaller than free fall
When the dribble flow is turned off, the medium flow is also forced to OFF.
Set Optional preliminary > Preliminary > Free Fall. (0 is allowed because of A8)
41
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.
SETPOINT CONNECTOR WIRING
Pin #
A1 1
A2 2
A3 4
A4 8
Pin #
10
1
10
2
B3 Prelim.
10
3
B4 Prelim.
10
2
10
3
A8 Final
A10
10
4
B9
Free Fall 10
0
B10
10
0
10
1
UNDER
A11
A12
Free Fall 10
1
Free Fall 10
2
B12 Shield
42
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).
An output terminal number can be selected with the general functions, OUTF-01 through
OUTF-08.
The setpoint signal output is turned off unconditionally when the operation mode is other than the normal mode.
43
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 10
Target weight 10
Target weight 10
0
1
Pin #
B1
B2
B3
B4
B5
B6
Hi Limit. 10
Lo Limit 10
3
Hi Limit. 10
4
0
Lo Limit 10
Lo Limit 10
Lo Limit 10
2
B7 Lo Limit 10
3
B8
3
4
1
2
Target weight 10
Target weight 10
4
B9
Hi Limit 10
Hi Limit 10
0
1
B10
Hi Limit 10
2
B11
44
CHECK WEIGHING MODE 2 (WEIGHING MODE CALF-14 =
6)
Output Condition Output
Terminal
Zero band
Hi-Hi
Hi
Go
Lo
Lo-Lo
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
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.
The setpoint signal output is turned off unconditionally when the operation mode is other than the normal mode.
45
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.
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9
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9
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5 1 / .
9
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5 1 / .
9
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5 1 / .
9
.-
5 1 / .
9
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5 1 / .
9
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5 1 / .
9
./
5 1 / .
9
..
5 1 / .
9
.-
5 1 / .
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9
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5 1 / .
9
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5 1 / .
9
..
5 1 / .
9
.-
5 1 / .
. 0 2 4 6 ..
/ 1 3 5 .- ./
. 0 2 4
/ 1 3 ./
7 8
SETPOINT CONNECTOR WIRING
Pin #
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
1
2
Pin #
B1
B2
Hi Limit. 10
3
Hi Limit. 10
4
Lo Limit 10
0
4 B3
8
Target weight 10
Target weight 10
Target weight 10
Target weight 10
0
1
B4
B5
B6
Lo Limit 10
Lo Limit 10
Lo Limit 10
2
B7 Lo Limit 10
3
B8
3
4
1
2
Target weight 10
4
B9
Hi Limit 10
Hi Limit 10
0
1
B10
Hi Limit 10
2
B11
46
CHECK WEIGHING MODE 3 (WEIGHING MODE CALF-14 = 7)
Output Terminal Output Condition
Zero band Gross
≤ Zero band
Hi-Hi
Hi
Go
Net > Hi-Hi Limit
Net > Hi Limit
Hi Limit
≥ Net ≥ Lo Limit
Lo
Lo-Lo
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.
The setpoint signal output is turned off unconditionally when the operation mode is other than the normal mode.
47
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.
<L <HJHP
;H <HJHP
9
.1
5 1 / .
9
.0
5 1 / .
9
./
5 1 / .
9
..
5 1 / .
9
.-
5 1 / .
9
.1
5 1 / .
9
.0
5 1 / .
9
./
5 1 / .
9
..
5 1 / .
9
.-
5 1 / .
:HLDE +?LOGHBA .>.255 LN PGE C LJMAPHBIE,
.
/ 0 1 2 3 4 5 6 .- .. ./
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8
7
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/ 1 3 5 .- ./
. 0 2 4
/ 1 3 ./
7 8
SETPOINT CONNECTOR WIRING
Pin #
A1
A2
A3
A4
A5
A6
A7
1
2
4
8
Pin #
B1
B2
B3
B4
B5
B6
B7
Hi Limit. 10
Hi Limit. 10
3
4
Lo Limit 10
Lo Limit 10
Lo Limit 10
0
1
2
Lo Limit 10
3
Lo Limit 10
4
A8 B8
A9
A10 Hi Limit 10
0
A11 Hi Limit 10
1
B9
B10
A12 Hi Limit 10
2
48
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.
The setpoint signal output is turned off unconditionally when the operation mode is other than the normal mode.
49
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.
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=N -=N ?NPNV
:
/.
1
6 2 0 /
:
/.
0
6 2 0 /
:
/.
/
6 2 0 /
:
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.
6 2 0 /
:
/.
1
6 2 0 /
:
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0
6 2 0 /
:
/.
/
6 2 0 /
:
/.
.
6 2 0 /
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:
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1
6 2 0 /
:
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0
6 2 0 /
:
/.
/
6 2 0 /
:
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.
6 2 0 /
:
/.
1
6 2 0 /
:
/.
0
6 2 0 /
:
/.
/
6 2 0 /
:
/.
.
6 2 0 /
?R-?R ?NPNV
9
8
/ 0 1 2 3 4 5 6 7 /. // /0
FNKW LTRP VMK CKGT S GQKO
SETPOINT CONNECTOR WIRING
Pin #
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
Pin #
1
2
4
8
Hi-Hi Limit 10
0
Hi-Hi Limit 10
1
B1
B2
B3
B4
B5
B6
Lo Limit 10
Lo Limit 10
Lo Limit 10
Lo Limit 10
2
3
0
1
Lo-Lo Limit 10
0
Hi-Hi Limit 10
Hi-Hi Limit 10
2
3
B7 Lo-Lo Limit 10
Lo-Lo Limit 10
2
3
B8
Hi Limit 10
0
Hi Limit 10
1
B9
Hi Limit 10
2
B10
Hi Limit 10
3
Lo-Lo Limit 10
1
50
?R ?NPNV
/ 1 3 5 7 //
0 2 4 6 /. /0
/ 1 3 5 /0
0 2 4 6
8 9
ER D<EBA>@E
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.
Provided internally is the weight value called high-resolution “internal count” with the minimum graduation calculated as 1.
For example, when the minimum graduation is 10, a display changes only in a step of 10, but a finer change is captured internally.
Batch weighing mode mainly uses the internal count, and Check comparison mode uses the display count.
This is because the internal count is superior from a viewpoint of weighing accuracy, but if the platform scale is compared using the internal count, it appears as if the displayed weight and comparison result are contradictory to each other.
The comparison weight is selected with the general function, “Selection of Setpoint Weight SQF-01.” It is meaningless to use the internal count, unless the minimum graduation is 2 or more.
7-7 AUTO PRINT
Auto print is the capability to output the Batch Finish weight from the external output where the output mode has been set to Auto Print. The output timing is as follows depending on the weighing mode.
CUSTOMER PROGRAMMED CONTROL MODE (NORMAL BATCHING , LOSS-IN-WEIGHT)
Since the weighing completion timing is not definite in customer programmed control mode, the weight is output only once when a setpoint target net value is stabilized at 5D or greater.
To output again, the setpoint target net value must be to less than 5D (5 graduations).
BUILT-IN-AUTOMATIC PROGRAM MODE
The weight is output the moment the weighing sequence encounters the batch finish timing.
7-8 AUTOMATIC ACCUMULATION
The Automatic accumulation function automatically accumulates the net weight after weighing. The its timing is the same as auto print, but its functioning differs depending on “Automatic accumulation SQF-02.”
Setting
02
Automatic accumulation
0 1
2
Accumulates only acceptable weight
Accumulates all values
51
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.
The hopper scale has a certain increase in the weight value until batch finish since the dribble gate is closed. This increase is called a free fall. To perform weighing with little error, the free fall setting for the setpoint must be equal to an actual free fall.
As a remedy, there is an option to automatically update the “moving average of the last four actual free falls” as the next free fall setting. The loading error and actual free fall are expressed by the following formulas.
Error = Batch Finish net - final
Actual free fall = Batch Finish net - *Dribble flow cut net
* Final - Free fall
When the loading error exceeds the automatic free fall effective width (SQF-04), automatic free fall compensation is not performed, taking it as an error.
Since customer programmed control mode judges the Batch Finish timing externally, a calculation is made assuming that weighing is completed when an automatic free fall command is input to the Control I/O.
Automatic free fall compensation is designed to reduce the weighing error in batch weighing. Therefore, Check
Weighing does not have this capability.
03
04
Automatic Free
Fall
Compensation
Automatic Free
Fall Effective
Width
Default
Setting
Parameter Description
0 No Automatic Free Fall Compensation
0 1
2
Moving average of last four actual Free Falls
Fuzzy Automatic Free Fall Compensation
0
0 to
9999999
If a loading weight is within the final +/- automatic
Free Fall effective width, Automatic Free Fall
Compensation is on.
7-10 FUZZY AUTOMATIC FREE FALL COMPENSATION
Automatic free fall compensation mentioned above is very effective when the actual free fall does not change.
However, it is very difficult for conventional automatic free fall compensation to eliminate the following actual free fall fluctuation factors.
• Changes of specific gravity or viscosity of the weighed substance
• Inconstant flow rate due to a change of water pressure, and so on
• Bad flow due to adherence of the weighed substance to the surface of the hopper
• Clumps in the weighed substance
Fluctuation factors mentioned above affect the actual free fall, but their relations are fuzzy.
The AD-4401 takes in their effects as the data 1 through 3 and reflects the fuzzy data in calculation of the free fall, applying fuzzy logic theory.
1) Flow rate and its change
• The actual free fall increases as the flow rate becomes greater.
• Reliability of the actual free fall becomes higher as a flow is stabilized.
2) Lapse of time
• The newest weighing result is least affected by a secular change.
3) Reliability of the loading result
• Higher reliability is given to the actual free fall where distribution of the loading result is more focused.
Note : Precautions for using Fuzzy Automatic Free Fall Compensation
• Fuzzy automatic free fall compensation is not made on the first loading after free fall setting for a setpoint.
• Take 3 seconds or more to carry out the dribble flow in order to calculate an internal flow rate.
• The free fall value always changes because it is calculated per sampling.
52
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
Terminal
No.
Function Name Description
A1 Zero
A2
A3
Tare
Batch start
Clears the gross to zero. However, it does not function beyond the range set with the calibration
Subtracting the tare weight and a displayed weight becomes the net.
Starts the weighing sequence.
Input
COM
Output
A5
B4
B5
B6
B7
B8
A7
A8
B1
B2
B3
Discharge start
Input COM
Output COM
Zero band
Underlimit
Overlimit
Full flow
Medium flow
Dribble flow
Discharge
Batch finish
Starts the discharging sequence.
While this input is ON, the keys disabled by the general function
(FNC-01) are enabled.
Input COM. Each input is accepted by shorting it with this terminal.
Output COM
Turned on when the gross is lower than zero band setting.
Turned on when the judgment result is underlimit.
Turned on when the judgment result is overlimit.
Turned on when the weighing sequence is full flow.
Turned on when the weighing sequence is medium flow.
Turned on when the weighing sequence is dribble flow.
Turned on during the discharging sequence.
Turned on when the weighing sequence is completed and judged.
CONTROL I/O CONNECTOR, ACCESSORY
Parts Name
Connector
Connector cover
Q'ty A&D’s parts Number Description
53
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 Terminal No. Function Name
0 <No N/A
1 Zero
2
3
4
7
Tare
Batch start
Emergency stop
Edge
Edge
5 Discharge Edge
Automatic free fall command
Edge
Level
Level
Edge
Description
N/A
Clears the gross to zero. However, it does not function beyond the condition set with the calibration.
Subtracts the tare. A displayed weight becomes the net.
Starts the batch weighing.
Stops batching or discharging and turns on an output pin set for the weighing sequence error.
For the Built-in automatic program mode.
Starts the discharging sequence.
Exclusive for sequential batching
For Normal batching in the Built-in automatic program mode
While this input is turned on, the keys disabled by the general function(FNC-01) are enabled.
Performs automatic free fall compensation. Exclusive for customer programmed control mode
Normal batching &
Loss-in weighing in the
Customer programmed control mode
8
9
10
11
Digital switch read disable
Clear tare
Accumulation command
Accumulation cancel
Level
Edge
Edge
Edge
While this input is turned on, reading of the digital switch stops.
Clears the tare value. A displayed value becomes the gross.
Accumulates the current net into the accumulated weight and increments the accumulated times by one.
Subtracts the previously accumulated weight from the accumulated weight and decrements the accumulate.
12
13
14
Clear accumulation
Hold
Print command for manual print
Edge
Level
Edge
Clears the accumulated weight and accumulated times.
While this input is turned on, the weight value is held.
Outputs the specified data from the external input/output set for manual print.
Note 1: An edge input is accepted when it is switched from OFF to ON, and a level input is accepted while it is
ON.
Note 2: Input ON refers to the state when each input terminal and input COM are connected together.
Note 3: An input has chattering eliminated. Both ON time and OFF time require 50 ms or more.
In order to prevent malfunctioning, each input terminal does not accept an input in the non-normal mode such as “before displaying the weight after power-on” or “OFF mode.”
54
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.)
Set value
1
2
3
4
5
Function Name
Zero range
Underlimit
Hi-Hi
Overlimit
Hi
Full flow
Full
Go
Medium flow
Lo
6
Dribble flow
Lo-Lo
7 Discharge
Description
N/A
Turned on when the gross is close to the zero range.
In case of Normal batching/Loss-in-weight
In case of check weighing
In case of Normal batching/Loss-in-weight
In case of check weighing
In case of normal batching
In case of Loss-in-weight
In case of check weighing
In case of Normal batching /
Loss-in-weight
In case of check weighing
In case of Normal batching /
Loss-in-weight
In case of check weighing
Functioning differs depending on the weighing mode
CALF-14. See CHAPTER 7
WEIGHING SEQUENCE.
Exclusive for built-in automatic program
9
10
12
13
14
15
16
Motion detection
Online running
Turned on when waiting for an input of the loading signal.
Weighing sequence error
Turned on when a weighing sequence error occurs.
Input acknowledge
Turned on when the weight value is stabilized.
Turned on in case of the normal mode
Zero error
Capacity overflow
Low battery
Exclusive for built-in automatic program
Turned on for 0.5 second after detecting a rise edge of the input terminal.
Turned on when zeroing was performed and could not be accepted because it was beyond the condition.
Turned on when the gross overflows.
Turned on when the memory backup battery has run out.
Note 1: Output ON refers to the state that the open collector circuit for each output and output COM have power continuity. (See 8-1 for circuit description)
In order to prevent malfunctioning, each output terminal is turned off in the non-normal mode such as
“before displaying the weight after power-on” or “OFF mode.”
55
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. (Setting upon shipment)
5-DIGIT MODE; SPF-01 = 1
When the minimum graduation is set to 10 or more, the value of the thumbwheel switch is input and multiplied by 10.
Pin #
A1 1
A2 2
A3 4
A4 8
10
2
10
3
A8 Final
10
4
A9 Final
B12 Shield
Only use the pins listed above.
When the minimum graduation is set to 10 or more, the value of the thumbwheel switch is input and multiplied by 10.
CONNECTOR FOR SETPOINT (NOT INCLUDED WITH THE ACCESSORIES.)
Parts Name
Connector
Connector cover
Q'ty A&D’s parts Number Description
16-DIGIT MODE; SPF-01 = 2
Depends on the weighing mode. See {CHAPTER 7. WEIGHING SEQUENCE}
When the minimum graduation is set to 10 or more, the value of the thumbwheel switch is input and multiplied by 10.
56
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.)
Parts Name Q'ty A&D’s parts Number Description
Connector
Setting
01 Output 1
2 Gross
3 Net
4 Tare
5 Gross/Net/Tare
A&D standard format
8
Accumulated weight/ Accumulated counts
1 Stream
02
Data transfer mode
1
03 Baud 2
INTERFACE SPECIFICATION
Signal System
Data bit
Parity bit
Stop bit
Code used
20 mA current loop 1=20 mA, 0=0 mA
7 bits
1 bit (EVEN)
1 bit
ASCII
Accumulated data format
Note: When connecting any unit other than an external indicator or printer manufactured by A & D, the device must supply power (active current loop) or an external power supply must be used.
57
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.
<A & D STANDARD FORMAT>
Header 1 Header2 Data (Eight digits; polarity and decimal point included) Unit Terminators
Header-1
Header-2
OL [4F 4C] (Over Load)
Data (ASCII code)
Unit
0 to 9 [30 to 39]
+ [2B]
- [2D]
SP (space) [20]
• [2E]
SP SP [20 20] (No unit)
SP g [20 67] (g)
SP t [20 74] (t)
< Example >
Header
1
Header
2
8 Digits Including Data, Polarity, and
Decimal Point
Unit Terminator
Gross S T , + 0 0 1 2 3 4 5 k g CR LF
Header-2 is
Net
"GS"
Header-2 is
"NT"
Tare
Header-2 is
"TR"
With decimal point
Plus overflow
O L , G S , + SP SP SP SP . SP SP k g CR LF
"." in numerical data
Minus overflow
Output
OFF data
O L , G S , - SP SP SP SP . SP SP k g CR LF
O L , G S , + SP SP SP SP . SP SP k g CR LF
Header-1 is
"OL"
Header-1 is
"OL" and polarity is "-"
Header-1 is
"US"
Same as plus overflow
58
<ACCUMULATION DATA FORMAT>
< Example >
Accumulated weight
Weight +
Overflow
Weight -
Overflow
Accumulated count
Counts +
Overflow
[Stream]
Header-
1
8 Digits Including Data, Polarity, and Decimal Point Unit Terminator
T W , + 0 1 2 3 4 5 6 . 7 8 k g CR LF
Header is "TW"
T W , + SP SP SP SP SP SP SP . SP SP k g CR LF
"SP" value
T W , - SP SP SP SP SP SP SP . SP SP k g CR LF
"SP" value,
"-" polarity
CR LF
Header is "TN"
T N , + SP SP SP SP . SP SP . SP SP SP SP CR LF
"SP" value
The data is transmitted in synchronization with the update of the display. When the display rewrite exceeds the baud rate, data transmission is suspended until the next display update.
The transmitted data is the same as what is being displayed. Therefore, non-displayed data is never transmitted.
[Auto Print]
The data is transmitted each time weighing has been completed. The weighing completion timing differs depending on the weighing mode. See CHAPTER 7 WEIGHING SEQUENCE.
[Manual Print]
The data is transmitted when you press the key set for the “print command for manual print” or a Control I/O input is made.
59
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. high-speed output, can be scaled optionally)
9-1 OP-01 PARALLEL BCD OUTPUT
Setting of the BCD output is done with the general functions, BCDF-01 through BCDF-05.
Setting
BCDF- Name Default
Parameter Description
1
2 Gross
3 Net
4 Tare
1 Stream
03 Data logic 2
04 Strobe output logic 2
2
2
,19
Negative logic
Negative logic
,0-9
7:G=?F?
+5A>;+
6@BFE
8FEBFE
/-?2 AC
><DD
4A??A@
.
/-
3
2
.
/-
CONNECTOR FOR OP-01 BCD OUTPUT (INCLUDED WITH THE OP-01 ACCESSORIES.)
Parts Name
Connector
Connector cover
Q'ty Parts Number Description
60
INTERFACE SPECIFICATION
Output
Input
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
• 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.
• In case of overflow the digits, 1x10
0
to 1x10
5, of the weighing data become “1”.
• Hold-input is fixed at negative logic. All outputs including strobe are held when HOLD input is turned on.
Pin #
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
1 x 10
0
4 x 10
1 x 10
0
1
4 x 10
1
1 x 10
2
4 x 10
2
1 x 10
3
4 x 10
1 x 10
3
4
4 x 10
4
1 x 10
5
4 x 10
5
Pin #
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
2 x 10
0
8 x 10
2 x 10
0
1
8 x 10
1
2 x 10
2
8 x 10
2
2 x 10
3
8 x 10
2 x 10
3
4
8 x 10
4
2 x 10
5
8 x 10
5
A13 B13 Positive
A14
OVER
Motion Detect B14 Net
A15
Decimal Point 10
1
B15
Decimal Point 10
2
A16
A17
Decimal Point 10
3
* Unit 1
B16
B17
Decimal Point 10
4
* Unit 2
*Unit 1, Unit 2
Unit Unit 1
None 0
kg
lb
0
1
t
g
0
1
Unit 2
0
0
0
1
1
61
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.
9-2 OP-03 RS-422/-485 INTERFACE
OP-03 provides external inputs/outputs to be connected to a personal computer. It can be set to RS-422 or RS-485. It is different from the RS-232C in that up to 10 units can be connected in series (RS-422) or parallel (RS-485) by the address capability. The data format, function settings, and so on are common to the OP-04 RS-232C.
Signal
System
Data bits
Parity bits
Stop bits
Baud rate
Code used
Conforms to the EIA RS-422 or RS-485
7 bits, 8 bits
1 bit (Even or Odd), None
1 bit, 2 bits
600, 1200, 2400, 4800, 9600, 19200 bps
ASCII
ADDRESS CAPABILITY
The address capability responds only when your own instrument is called from a host computer. The address number of each instrument can be set from 1 to 99 with
RSF-09; 0 denotes no address capability.
When a command prefixed with an address “@xx”(xx is an address number) is sent from the host computer, each AD-4401 compares this with address setting of the individual instrument.
If a result of setpoint matches, the command will be analyzed and responded to. At this time, the instrument’s address is added to the response.
Example of Adding the Address (For MZ Command)
SWITCHING TO RS-422/RS-485
Switching to RS-422/RS-485 is made with RSF-08. When more than two units are connected to the AD-4401, select "
Command " for RSF-02 and " With address " for RSF-09.
62
<EXAMPLE>
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.
63
<EXAMPLE>
The following is a program for connecting two AD-4401s and a computer by RS-422.
Setting item
Baud rate
Parity bit
Character bit
Stop bit length
Terminator
Output data (Display weight)
Data transmitting mode ( Command)
RS-422/485 switching (RS-422)
Address number
Computer
960 0 bps
Even
7 bits
1 bit
CR, LF
N/A
AD-4401
RSF-03 = 5
RSF-04 = 2
RSF-05 = 7
RSF-06 = 1
RSF-07 = 2
RSF-01 = 1
RSF-02 = 4
RSF-08 = 1
RSF-09 = 1 (#1)
RSF-09 = 2 (#2)
10
20
30
40
50
60
70
80
OPEN "COM:E71NN" AS#1
PRINT #1,"@01RW"
LINE INPUT #1,A1$
PRINT A1$
FOR I=1 TO 100: NEXT I
PRINT #1,"@02RW"
LINE INPUT #1,A2$
PRINT A2$
90 CLOSE
100 END
RS-232C stand-by
Data request for AD-4401 #1
Data receive from AD-4401 #1
Displaying the data from AD-4401 #1
Waiting for the next
Data request for AD-4401 #2
Data receive from AD-4401 #2
Displaying the data from AD-4401 #2
9-3 OP-04 RS-232C INPUT/OUTPUTS
OP-04 provides external inputs/outputs to be connected to an external indicator, printer, personal computer, etc. It has both RS-232C inputs/outputs and current loop outputs. Current loop outputs and RS-232C outputs are internally connected in parallel.
INTERFACE SPECIFICATION
Signal
System
Data bits
Parity bits
Stop bits
Baud rate
Code used
Conforms to the EIA RS-232C
7 bits, 8 bits
1 bit (Even or Odd), None
1 bit, 2 bits
600, 1200, 2400, 4800, 9600, 19200 bps
ASCII
Note: OP-04 settings are made with RSF-01 through RSF-07.
These settings are common to OP-03 (RS-422/-485).
OP-04 RS-232C I/O connector, not included. Use the one below or the compatible on the market.
D-Sub 25P Plug: HDBB-25P, Hirose
Connector cover: HDB-CTF, Hirose
64
RSF- Name Default
Parameter Description
01 Output 1
Setting
2 Gross
3 Net
4 Tare
5 Gross/Net/Tare
02
Data transfer mode
1
A&D standard format
8
Accumulated weight/ Accumulated counts
1 Stream
Accumulated data format
4 Command
5
6
Comparison data + Gross ; Output per sampling
Comparison data + Net; Output per sampling
Set to 9600 bps or less at the time of output per sampling.
5
04 Parity
05
06
Character bit length
Stop bit length
07 Terminator
08
09
RS-422/
RS-485 switching
Address number
2
7
1
2
1
0
0 None
1 Odd
2 Even
1 CR
0
01 to 99
Without address capability
01-99: With address capability
With address capability
Set to 0 in case of the
RS-232C.
65
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. For example, if an “MT” command is received, the tare will be subtracted and its result (whether tare subtraction is allowed or not) will be sent as a response.
The address capability is available only in this mode.
[Output per Sampling]
There are two types; gross and net. This mode outputs the setpoint state as well as weights. This is stream operations outputting at a rate of 100 times/second in synchronization with sampling.
TRANSMISSION FORMAT
There are three kinds of transmission format; “A & D standard format”, “Accumulation data format”, and
“Output-per-Sampling format.” ( Outputs data 100 times per second synchronized with sampling.)
The A & D standard format used for this weighing indicator consists of two headers, data, unit, and a terminator.
A & D Standard Format Example
Header-
1
Header-
2
8 Digits Including Data, Polarity, and
Decimal Point
Unit Terminator
Gross
Net
Tare
With decimal point
Plus overflow
Minus overflow
Output OFF data
O L , G S , + SP SP SP SP . SP SP k g CR LF
O L , G S , - SP SP SP SP . SP SP k g CR LF
O L , G S , + SP SP SP SP . SP SP k g CR LF
Header-2 is
"GS"
Header-2 is
"NT"
Header-2 is
"TR"
"." in numerical data
Header-1 is
"OL"
Header-1 is
"OL" and polarity is
"-"
Header-1 is
"US"
Same as plus overflow
66
Accumulation data format Example
Header
-1
8 Digits Including Data, Polarity, and Decimal Point
Accumulated weight
Weight +
Overflow
Unit Terminator
T W , + SP SP SP SP SP SP SP . SP SP k g CR LF
Weight -
Overflow
T W , - SP SP SP SP SP SP SP . SP SP k g CR LF
Accumulated count
Counts +
Overflow
T N , 8 9 SP
T N , + SP SP SP SP . SP SP . SP SP SP SP CR LF
*The decimal point position remains unchanged in case of overflow.
Output-per-Sampling Format Example
Setpoint data
←⎯⎯→
Weight data, Hexadecimal, 6 digits
←⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯→
Terminator
←⎯⎯⎯⎯→
Header is
"TW"
"SP" value
"SP" value,
"-" polarity
Header is
"TN"
"SP" value
Weight data
[7FFFFF]
0 0 1 0 1 1 0 0
Comparison result acquired from the weighing sequence is shown in hexadecimal.
Under (Hi-Hi)
Over (Hi)
Full Flow (Go)
Medium Flow (Lo)
Dribble Flow (Lo-Lo)
Discharge gate open
Weighing data
Weighing data is described in 6 digits (HEX) and no decimal point.
(Example)
999.9 kg ---> 00270F (HEX)
-0.1 kg ---> FFFFFF (HEX)
Note) Select 19200 bps when data is output in the Output-per-Sampling Form.
67
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. Batch status)
RF (Request Final)
RT (Request Total)
DT (Delete Total)
MG (Make Gross)
MN (Make Net)
MZ (Make Zero)
MT (Make Tare)
CT (Clear Tare)
BB (Begin Batch)
BD (Batch Discharged)
HB (Halt Batch)
SS (Set Setpoints)
RS (Request Setpoint)
RE (Read EEPROM)
WE (Write EEPROM)
Function
Reads the weight
Reads the weighing sequence status
Reads the weighing(loading) result
Reads the accumulated weight and times
Clears the accumulated value
Displays the gross
Displays the net
Clears to zero
Subtracts the tare
Clears the tare
Starts batching
Starts discharging
Emergency stop
Sets the setpoints
Reads the setpoints to be used.
Reads from the EEPROM.
Note: Accepted only in the calibration mode
Writes to the EEPROM.
Note: Accepted only in the calibration mode
B
C
* RE and WE commands are accepted only in the calibration mode. (Step 2 state in 5-2)
Com. Procedures
B
B
B
B
A
A
A
A
A
A
A
A
A
C
B
68
Acknowledgment
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.
Negative acknowledgment (Beyond condition): AD-4401 in non-receiving mode
Negative acknowledgment (Beyond range):
Data format correct, but value beyond allowable range
Negative acknowledgment (Illegal command/data): Command or data format illegal
Any response is made within 200 ms after receiving the command.
IE
VE
?E
Command Name
RW Request-Weight
Function
Reads out the weight; The content of the response data is the same as that set with
RSF-01. Same operation as when the manual print key is pressed.
Data is sent in the “A&D standard format”.
RB Request-Batch-status
Reads out the weighing sequence status; The response data is sent in the
“Output-per-Sampling Format”. The weight output value is the net.
RF Request-Final
RT Request-Total
Reads out the weighing (Batching) result; Outputs net weight when weighting completes.
Data is sent in the “A&D standard format”.
Reads out the accumulated weight and times;
Data is sent in the “Accumulation data format”.
Sets the setpoints; Writes 42-character for 7 setpoints altogether. Blanks are filled with 0.
Each value is shown in 6 digit without decimal point. Data is sent in the following format.
SS
RS Request-Setpoint Reads
RE Read-EEPROM
WE Write-EEPROM
Reads from the EEPROM; Reads the calibration or function data from the EEPROM. The data equivalent to 206 characters is returned in the ASCII code except the terminators.
If this data is written to another AD-4401 with a “WE” command, calibration and function settings can be copied.
Writes to the EEPROM: Same format as the RE command
69
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.
Note
• When the minimum division is set to 10 or more, ten times the value set on the OP-05 will be used.
• When using this option, set the setpoint read mode SPF-01 to “2.”
Setting
SPF- Name Default
Parameter Description
0 Thumbwheel switch Unrequired mode
01
Setpoint value read mode
0
GENERAL SPECIFICATION
General Specification
Power supply
Power consumption
Working temperature
11.5 to 25 V DC (Unrequired when external setting input or serial connection is not used)
3.5 W at maximum
-5
°C to 40 °C
Outer dimensions
Setpoint parameter
Setpoint Values Which Can
Be Set Externally
192(W) x 118.6(D) x 57(H) mm (See the appearance drawing)
Final (5 digits) / Free fall (3 digits) / Preliminary ( 4 digits)/ Overlimit (2 digits)/ Underlimit (2 digits)
INT/EXT, switching by the slide switch on the front panel
Final (5 digits. No input of 8 x 104) / Free fall (3 digits) / Preliminary (4 digits)
FRONT AND REAR PANEL
70
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.
By connecting two or more of these units in series and operating the CONT terminal from an external unit, you can select the required unit.
If the CONT terminal of the unit 2 is shorted in the figure below, the data set for 2 will be input. When this is done, if the other units are shorted simultaneously, the data for the unit closest to the AD-4401 will be input.
The CONT terminal is configured as shown in the figure below. It should be driven so that the rated current will be 50 mA or more and the terminal voltage at ON time will be 1 V or less.
-/ -. -- -, -+ ,4 ,3 ,2 ,1 ,0 ,/ ,. ,- ,, ,+ 4 3 2 1 0 / . - ,
59>;F <DB@ E=; D;:D C:A;?6
#
A
Func.
#
B
Func.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 2 4 8 1 2 4 8 1 2 4 8 1 2 4 8 1 2 4 1 2 4 8
10
0
10
1
10
2
10
3
10
4
10
0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 2 4 8 1 2 4 8 1 2 4 8 1 2 4 8 1 2 4 8 1 2 4 8
10
1
10
2
10
0
10
1
10
2
10
3
Free Fall Preliminary
7
8
71
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.
The following figure shows the connections used when using a PLC to set the final, free fall, and preliminary through the
BCD input. Set the slide switch to EXT for the item you want to set from the external unit
ACCESSORIES FOR OP-05 SETPOINT UNIT
Parts Name
Fuse
Connector
Connector cover
Q'ty A&D’s Parts Number Description
72
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.
Setting
ANF- Name Default
Parameter Description
1 Same as display
2 Gross
3 Net
02
03
Weight value at 4 mA output
Weight value at 20 mA output
0
16000
-999999 to
9999999
The position of decimal point is set in CALF-02.
Interface Specification
Current output 4 to 20 mA
Applicable load resistance 0 to 520 Ω
Resolution
Non-linearity
Temperature coefficient
Approximately 1 / 3000
+/- 0.1% F.S or less
Zero point: +/- 0.02 %FS/
°C or less
Sensitivity: +/- 0.02 %FS/
°C or less
SETTING METHOD
Set the weight value at a 4 mA output point in ANF-02 and that at a 20 mA output point in ANF-03, ignoring the unit of weight.
<Setting Example>
Outputting 4 mA at 0.0 kg and 20 mA at 1,000.0 kg. (Full line in the figure at the left )
ANF-02 = 0.0 kg
ANF-03 = 1000.0 kg
Outputting 20 mA at 0.0 kg and 4 mA at 1,000.0 kg. (Dotted line in the figure at the left)
ANF-02 = 1000.0 kg
ANF-03 = 0.0 kg
73
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
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.
Step 2
With the [ZERO] key pressed and held, press the [ENTER] key. The indicator will enter the check mode. “Chc key” is displayed and the cursor appears at the right end. Release both keys.
Step 3
Using the [
∧ ] and [ ∨ ] keys, select the desired check item.
Select the desired check item and press the
[ENTER] key. The indicator will enter the check mode for the selected item. To exit each check mode, press the [ESC] key.
74
Item checked
Checking procedures Display
Key Switches
(O) Mark of the pressed key moves upward.
Control I/O
Standard Serial
Output
OP-01 BCD
<Input terminal number>
(O) Mark of the ON-terminal moves upward.
<Output terminal number>
The terminal of the displayed number is on.
Pressing the [ENTER] key sends “1 2 3 <CR><LF>” at the baud rate set in the general function setting.
<Hold>
(O) Mark moves upward when “Hold” is on.
<Output terminal number>
The terminal of the displayed number is on.
OP-03
(RS-422/-485),
OP-04
(RS-232C)
Setpoints and
OP-05 Setpoint
Unit
Pressing the [ENTER] key sends “1 2 3” based on setting made in the general functions. If the same data as the sent data is received, “PASS” will be displayed.
<Terminal number>
The number of COMMON terminal of the digit to be read is shown.
<Set value>
The value of the digit to be read is shown.
OP-07 Analog
Output
A/D Converter
A current value (mA) being output is displayed.
The current value can be changed with the [
∧] or [ ∨] key.
A load cell signal value being input is displayed in the unit of mV/V.
When this value is within a range of 0 to 2 mV/V with no load, it is likely that the load cell is damaged or it is connected improperly.
Since an offset can be added to an A/D input, using the [
∧ ] or [ ∨ ], the
A/D converter can be checked for operations without applying a load to the load cell.
Procedure Problem
1
With +SIG and –SIG Load Cell terminals shorted, 0.0 mV/V is not displayed.
2
When not loaded, the displayed value is out of a range of 0.0 mV/V to 2.0 mV/V.
3
4
When loaded, the displayed value is smaller than that of procedure 2, or larger than 3.2 mV/V.
* When the [
∧ ] or [ ∨ ], key pressed, the displayed value does not increase.
* Note the value increase for future reference.
Cause
Load Cell excitation voltage or output voltage is incorrect, or Load Cell is wired incorrectly.
Damaged Load Cell
Load Cell is wired incorrectly, or incorrect rate of Load Cell.
Load Cell is incorrectly wired.
ROM version
ROM version is displayed.
CPU Version
CPU version is displayed.
75
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
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.
General function initialization mode Initializes both the RAM and the general function settings stored in the EEPROM.
All data initialization mode
Initializes the RAM and all data stored in the EEPROM (the general function settings, calibration related data) Since the calibration related data is also initialized, you must perform calibration again.
RAM INITIALIZATION MODE
Step
1
Turn off the power. With the [SETPOINT] key pressed and held, turn on the power. All display digits are illuminated, and then, “init ra” is displayed.
Step
2
Press the [ENTER] key. The indicator enters the RAM initialization mode. The “-” marks appear above and below the upper and lower display sections to prompt you for confirmation. When you want to initialize, continue pressing the [ENTER] key for 3 seconds or more. When you have entered this mode by mistake, do not hold the
[ENTER] key, press the [ESC] key to exit.
GENERAL FUNCTION INITIALIZATION MODE
Step
1
Turn off the power. With the [SETPOINT] key pressed and held, turn on the power. All display digits are illuminated, and then, “init ra” is displayed.
Step
2
Press the [
∧ ] key. “initFnc” is displayed.
Step
3
Press the [ENTER] key. The indicator enters the general function initialization mode. The
“-” marks appear above and below the upper and lower display sections to prompt you for confirmation. When you want to initialize, continue pressing the [ENTER] key for 3 seconds or more. When you have entered this mode by mistake, do not hold the [ENTER] key, press the [ESC] key to exit.
ALL DATA INITIALIZATION MODE
(Enter the All Data Initialization Mode from the calibration mode.)
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. Now, the indicator enters the calibration mode and “CAL SEt” is displayed. The right most digit starts blinking.
Step
3
Press the [
∨ ] key. “init ALL” is displayed
Step
4
Press the [ENTER] key. The indicator enters the all data initialization mode. The “-” marks appear above and below the upper and lower display sections to prompt you for confirmation. When you want to initialize, continue pressing the [ENTER] key for 3 seconds or more. When you have entered this mode by mistake, do not hold the
[ENTER] key, press the [ESC] key to exit.
76
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
01
02
Key switch disable
Capabilities of
[F] Key
Default
Setting
Parameter Description
00000000
Each bit corresponding to the relevant key
11111111
1 Disables
0 None
1
Print command for manual print
2 Hold
4 * Emergency stop
* : Denotes exclusive for
Normal batching mode.
03
04
05
07
08
09
8 lb-kg conv.(USA ver.)
Display
Rewrite Rate
Display
Content of
Subdisplay
Section
0 None
1 Gross
2 Net
Tare
4
5
Final value (Target weight)
Accumulated weight
Paste the accessory label to the front panel in compliance with the display content.
" " status display
Capability
Sampling frequency dividing ratio.
Hold operation
48
0 None
00 to
79
Series connection of two digital filters.
Value of each digit and cutoff frequency
0: None
1: 11.0 Hz
2: 8.0 Hz
3: 5.6 Hz
4: 4.0 Hz
5: 2.8 Hz
6: 2.0 Hz
7: 1.4 Hz
8: 1.0 Hz
9: 0.7 Hz
"Discharging" is exclusively intended for normal batching
(built-in automatic program mode).
The digital filter is designed to suppress dispersion of a load cell output signal. Two of them are connected in series as shown below.
Low frequency components which cannot be covered only by setting of the digital filters can be dealt with by equivalently lowering the cutoff frequency of the digital filters at
FNCF-07.
1
Lower the cutoff frequency of the digital filters equivalently by reducing the specified sampling times to one.
10
1 Normal
1
During peak hold, the positive peak of
2 Peak the weight value is held.
Comparison stop at hold
0 set "1" because the weighing sequence
77
WEIGHING SEQUENCE FUNCTIONS
01
02
03
04
05
06
07
08
09
10
11
Default
Setting
Parameter Description
Selection of comparison weight
1
Automatic accumulation
Automatic free fall compensation
Automatic free fall effective width.
Unstable
Dribble Flow
Timer
Overlimit/ underlimit operation
Stability at judgment
Maximum number of supplementary flow times
Batch start wait timer
Full-flow comparator inhibitor timer
Medium-flow comparator inhibitor timer
0
0
0
1
2
0
1
2
No Automatic accumulation
Accumulates only acceptable weight
Accumulates all values
No automatic free fall compensation
Moving average of last four times.
Only effective in Batch weighing mode
Fuzzy automatic free fall compensation
Only effective in
Built-In-Automatic Program mode.
0 0 to 99999999
Automatic free fall compensation is made if a loaded weight is within the final +/- automatic free fall effective width.
If Flow-time is shorter than the setting, the
0.0 to 25.5 second)
2
1 preset Free Fall is applied to the weighing instead of the
Auto-Free-Fall compensation.
1 Real-time comparison
Synchronized with
2
Batch Finish Output
0 Unrequired
1 Required
0: Unused
Only effective in Batch weighing mode.
Only effective in
Built-In-Automatic Program mode.
0
0.0 second)
0.0 to255
Non-0: Set times
N/A
Only normal batching
(built-in automatic program mode) is effective
Only effective in
Built-In-Automatic Program mode.
78
13
14
15
12
16
17
18
19
20
21
22
Setting
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
0.0
0.0 to 25.5
(In step of 0.1 second)
0.0
0.0 to 25.5 second)
0.0 to 25.5 second)
0.1
0.0 to 25.5 second)
0.1
0.0 to 25.5 second)
0
0
0
0
N/A
0:Until next Batch
Start
Non-0: Set time
0: Unused
Non-0: Set time
Intentionally blank
Only effective in
Built-In-Automatic Program mode.
Only normal batching (built-in automatic program mode) is effective
0: Unused
Non-0: Set time
Does not add the final
Does not add the final
Only loss-in-weight is effective
79
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
Default
Setting
Parameter Description
1 Zero
2 Tare
1 2 3 4 5 6 7
8
Automatic free fall command
Disable thumbwheel switch read
11 Cancel previous accumulation
User’s settings
13 Hold
14 Print command for manual print
CONTROL I/O OUTPUT FUNCTIONS
OUTF-01: Capability of Output Terminal B1
OUTF-02: Capability of Output Terminal B2
OUTF-03: Capability of Output Terminal B3
OUTF-04: Capability of Output Terminal B4
OUTF-05: Capability of Output Terminal B5
Default
OUTF-06: Capability of Output Terminal B6
OUTF-07: Capability of Output Terminal B7
OUTF-08: Capability of Output Terminal B8
Setting
Parameter Description
1 2 3 4 5 6 7 8
1 Zero range
3 Overlimit/Hi
4 Full flow/ Full/ Go
5 Medium flow/ Lo
7 Discharge
9 Stability
10 Online
User’s settings
14 Zero range error
80
STANDARD SERIAL OUTPUT FUNCTIONS
SIF- Name User’s
Default Parameter
1
2
Setting
Displayed weight
Gross
3 Net
4 Tare
1 5
6
7
8
Gross/Net/Tare
Accumulated weight
Accumulated counts
Accumulated weight
/Accumulated counts
02
Data transmitting mode
1 2 Auto-Print mode
2
”
Description
A & D standard format
Accumulation data format
OP-01 BCD PARALLEL OUTPUT FUNCTIONS
Setting
BCDF- Name User’s Default
Parameter Description
01
02
03
04
Output data
Data transfer mode
Data output logic
Strobe output logic
1
2 Gross
3 Net
4 Tare
1 Stream
1
2
2
2
2
Negative logic
Negative logic
81
OP-03 RS-422 / OP-04 RS-232C FUNCTIONS
Default
Parameter Description
1
Setting
2 Gross
3 Net
4 Tare
5 Gross/Net/Tare
02
Data transfer mode
A&D standard format
8
Accumulated weight/ Accumulated counts
1 Stream
Accumulated data format
1
4 Command
5
Comparison data + Gross ; Output per sampling
6
Comparison data + Net; Output per sampling
Set to 9600 bps or less at the time of output per sampling.
03 Baud 5
04 Parity 2
0 None
1 Odd
2 Even
05
06
Character bit length
Stop bit length
7
1
07 Terminator
08
09
RS-422/
RS-485 switching
Address number
2
1
0
1 CR
01-99: With address capability when the RS-232C is used.
Set to 0 in case of the
RS-232C.
OP-05 SETPOINT FUNCTIONS
Setting
Default
Parameter Description
0 Thumbwheel switch Unrequired mode
01
Setpoint value read mode
OP-07 ANALOG OUTPUT FUNCTIONS
Setting
Default
Parameter Description
1
1 Same as display
2 Gross
3 Net
02
03
Weight value at
4 mA output
Weight value at
20 mA output to The position of decimal point is set in CALF-02.
82
11-2 CALIBRATION RELATED FUNCTIONS
02
03
04
05
06
07
08
09
10*
11*
Decimal Point
Position
Minimum
Division
Capacity
Zero Range
Zero Tracking Time
Zero Tracking
Width
Motion Detect Time
Motion Detect
Range
Tare and Zero at
Unstable Weight
Value
Tare at Negative gross
Setting
Description
0 None
1 g (International version)
2
3 kg ( International version and USA version) t (International version)
4
1, 2, 5, 10,
20, or 50 lb ( USA version)
0 None
1
1
10
2
0 2 10
3
3 10
4
10
4
12345
1234.5
123.45
12.345
1.2345
Minimum division(increment) for the weight value.
Input 1,2, 5, 10, 20, or 50(decimal point ignored).
Capacity of the weighing. Weighing is allowed up to
16000 0 to 800000 this setting + 9D(9 divisions). A weight value beyond this limit is an overflow and not displayed.
A range of accepting "zero" from the [ZERO] key or
Control I/O. Represented in terms of percent(&) with
2
0.0
0
1.0
2
0 to 30
0.0 to 5.0
0 to 9
0.0 to 5.0
0 to 9
1
1
0
1
0
1 respect to the weighing capacity, centering around the zero calibrated point in calibration. If this is set to 2,
"zero" can be accepted within a range of the zero calibrated point +/- 2 %.
Zero tracking is performed in combination with
CALF-07 Zero Tracking Width. It is not performed when set to 0.0. Its unit is seconds
Zero tracking is performed in combination with
CALF-06 Zero Tracking Time. It is not performed when set to 0. Its least input increment is 1/2D. (The width for setting of 1 is equivalent to 1/2 of the minimum graduation)
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.
(The range for setting of 1 is equivalent to the minimum division)
"Tare" is not accepted when the weight value is unstable.
"Tare" is accepted even if the weight value is unstable.
"Tare" is not accepted when the gross weight is negative.
"Tare" is accepted even if the gross weight is negative.
Not available on the USA version.
83
12
13
15
16
17
Standard Serial
Output; Output
When Weight Value
Is Overflowing or
Unstable
RS-232C/-422/-485
; Output When
Weight Value Is
Overflowing or
Unstable
Zero Input Voltage
Span Input Voltage
(Capacity to zero)
Weight against
Span Input Voltage
User’s
Default Parameter
0
1
Setting
Description
Does not output when the weight value is overflowing or unstable
3
0.000000
1
0
1
1
1
2
3
4
5
6
7
8
0.000000 to
2.200000
0.000000
3.200000
0 to 800000
16000 point ignored)
Outputs even if the weight is overflowing or unstable
Does not output when the weight value is overflowing or unstable.
Outputs even if the weight value is overflowing or unstable
Normal batching
(Customer programmed control mode)
Loss-in-weight
(Customer programmed control mode)
Normal batching
(Built-in automatic program mode)
Loss-in-weight
(Built-in automatic program mode)
Check weighing 1
Check weighing 2
Check weighing 3
Check weighing 4
Batch
Weighing
Check-Wei ghing
For the hopper scale use
For the platform scale use
Input Voltage (mV/V) from the Load Cell at "Zero", which is determined in "Zero Calibration" with weights.
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.
When "Digital-Calibration", calibration not using weights, is performed, CALF-15 and CALF-16 also have to be done.
This setting will be changed to Capacity (CAL-04) if
"CAL Set" is done.
84
AD-4401
APPENDIX DIMENSIONS
OP-05
85
86
87
88
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