AD-4408C Weighing Indicator INSTRUCTION MANUAL 1WMPD4001849A
WARNING DEFINITIONS The warnings described in this manual have the following meanings: A potentially hazardous situation which, if not avoided, could result in death or serious injury. A potentially hazardous situation which, if not avoided, may result in minor or moderate injury or damage to the instrument. This symbol indicates caution against electrical shock. Do not touch the part where the symbol is placed. This symbol indicates the ground terminal.
Contents 1. Safety Precautions .......................................................................................................3 2. Introduction...................................................................................................................4 3. Specifications ...............................................................................................................5 3.1. Analog Section ........................................................................................
11. Setting List..................................................................................................................58 11.1. Basic Functions...............................................................................................58 11.2. Standard Serial Output....................................................................................59 11.3. CC-Link ...........................................................................................................59 11.4.
1. Safety Precautions For safe and correct usage, read the following precautions carefully before using the indicator. Grounding Earth ground the indicator by connecting the ground terminal located on the rear panel to the earth, to prevent a fire, electrical shock or indicator malfunction. Do not share the ground line with other electrical power equipment. Appropriate power cable Use a power cable appropriate to the supply voltage and current used.
2. Introduction The AD-4408C is a weighing indicator that amplifies signals from a load cell, converts it to digital data and displays it as a mass value. The accessory panel mount packing will provide the indicator the IP-65 protection. This indicator has the following performance: Input sensitivity: ......................... 0.15 μV /d Display resolution: ..................... 999,999 d max. Sampling rate:............................ 100 times/second Input voltage range: ...................
3. Specifications 3.1. Analog Section Input sensitivity Input voltage range Zero adjustment range Load cell excitation voltage Load cell drive capacity Temperature Zero coefficient Span Non-Linearity A/D conversion method A/D resolution count Display resolution Sampling rate 3.2. 0.15 μV/d or greater -35 mV to +35 mV (-7 mV/V to +7 mV/V) -35 mV to +35 mV (-7 mV/V to +7 mV/V) 5VDC 5%, 120 mA with remote sensing capability Maximum 8 x 350 Ω load cells 0.02 μV /°C typ., 0.1 μV /°C max. 3ppm /°C typ.
3.3. General 3.3.1. Interface Standard serial output CC-Link interface Output for communication with A&D peripheral devices (20 mA current loop) CC-Link ver.1.10 remote device station 3.3.2. Measuring functions Zero adjustment Zero tracking Tare Stability detection Digital filter AD-4408C Weighing Indicator • Sets the gross weight to zero by pressing the ZERO key or a command from the CC-Link master station. • Selection of disable or enable for the operation when unstable.
3.3.3. Other Power source Power consumption Operating temperature Operating humidity Installation method Mass • Zero value and tare weight Memory backup by lithium battery. (Approx. 10 years) • Calibration data and function data Written into the EEPROM 100 VAC to 240 VAC, +10%, -15%, (50/60 Hz) Approximately 10 VA -10°C to +40°C 85% R.H. or less (no condensation) Panel mount Approximately 800 g 3.3.4.
4. Description of Each Part 4.1. Front Panel Fig.1 Front panel Displays No. Name 1 Main display 2 ZERO 3 STABLE 4 5 GROSS NET 6 HOLD 7 8 UNIT 9 Capacity plate 10 CAL Description Displays the weight value, setting values, error messages, etc. Turns ON when the weight value is in the center of zero. • Turns ON when the weight value is stable. • The stability conditions can be changed in the calibration-related functions. Turns ON when the displayed value is a gross weight.
Key switches No. Name ON/OFF ESC 11 12 ENTER Net/B/G NET GROSS 15 TARE 16 ZERO 17 Seal • The key to proceed to the selected mode. • Confirms the setting value and stores the data when pressed after a setting is changed.
4.2. Rear Panel 2 3 4 1 Fig.2 Rear panel No. 1 2 3 4 Name Terminal block CC-Link connector CC-Link status LEDs Testing terminal 1 Terminal block Terminal No. 1 EXC+ 2 SEN+ 3 SEN4 EXC5 SIG+ 6 SIG7 SHLD 8 C.L. 9 C.L. 10 F.G. 11 12 13 Description See the detailed description below. See the detailed description on the next page. Leave this terminal unconnected.
3 CC-Link status LEDs LED RUN SD RD ERR ON Normal Transmitting Receiving • Setting error • CRC error • Station trouble OFF • Resetting • No signal Normal Blinking When a setting value is changed. .
5. Installation The weighing indicator is a precision electronic instrument. Handle it carefully. 5.1. Precautions 5.1.1. Environment The operating temperature is -10°C to +40°C. Do not install the indicator in direct sunlight. The indictor is not water-resistant. When used in an environment where the indicator may be exposed to splashing water, secure the front panel to the control panel using the accessory panel mount packing. It makes the front panel water-resistant equivalent to IP-65.
5.1.2. Power source Earth ground the indicator to prevent electrical shock or indicator malfunction. Before connecting the indicator to the power source, read the instruction manual thoroughly. Do not connect the indicator to the power source before the installation is complete. To avoid electrical shock, do not handle the power cable with a wet hand. Earth ground the indicator. Do not share the ground line with other electrical power equipment.
5.4. Load Cell Connection Two types of load cell connection are available: 6-wire connection and 4-wire connection. For high precision and stable weighing, 6-wire connection is recommended. (A) 6-wire connection (B) 4-wire connection Fig.
Type Advantages The error is small even when the load cell cable is 6-wire connection extended, a thin load (recommended) cell cable is used, or multiple load cells are used. Disadvantages Use a 6-wire shielded cable Complicated wiring when a summing box is used. The influence of the load cell cable resistance worsens the temperature coefficient.
6. Operation 6.1. General Function 6.1.1. Zero adjustment Zero adjustment is a function to set the gross weight to zero. It is performed by pressing the ZERO key or by a command from the CC-Link master station. The zero adjustment range is set in Calf05 (zero adjustment range) and is expressed in percent of the weighing capacity with the calibration zero point as the center. Zero adjustment is disabled, even within the zero adjustment range, when the A/D converter overflow occurs.
6.1.3. Tare Tare is a function to store the gross weight as the tare value and set the net weight to zero. The tare weight is stored in the battery backup RAM and is maintained, even if the power is disconnected. Clearing the tare weight is performed using the F key assigned to clear the tare weight. Alternately, apply power to the indicator while holding down the TARE key, or with the indicator in the OFF mode, press and hold the TARE key and press the ON/OFF key, to clear the tare weight.
6.1.5. display Assign a function to the display in the general functions. Functions related to the display zfncf04: Assigns a function to the display from the functions below: 0: None 1: Zero tracking in progress 2: Alarm (Zero range setting error, over, low battery) 3: F key status (Read the description below.) F key status zEnables when alternate switch or momentary switch is selected for fncf02. The display turns ON when the F key is ON and turns OFF when the F key is OFF. 6.1.6.
6.2. Mode Map The indicator has several modes to perform various operations. Perform mode switching by key operation as shown below, only in the direction of the solid arrow. After setting a mode, the indicator resets automatically. Alternately, the indicator resets, when the power is disconnected. Automatic reset after setting Power ON Weighing mode Switch using the ON/OFF key See the note below.
7. Calibration 7.1. General Description In the calibration mode, the operation to relate the output voltage from a load cell to the mass value and other operations directly related to weighing are performed. Calibration with an actual load Calibration-related function Digital span All data initialization Calibration is performed using a calibration weight. • Zero calibration: Adjusts the indicator so that the measured value will be zero when no load is applied to the load cell.
7.2. Calibration With an Actual Load (Cal5et) Calibration is performed using a calibration weight Before performing calibration for the first time, set the unit, decimal point position, minimum division and weighing capacity in the calibration-related function mode. NOTE: To avoid drift caused by changes in temperature, warm up the indicator for ten minutes or more before performing calibration with an actual load.
Step 8 Press the ESC key. Cal5et is displayed and the calibration data is written into the EEPROM. The current state is the same as that of step 2. To return to the weighing mode, press the ESC key again. NOTE: If C errX is displayed, an error has occurred. Refer to “7.4. Calibration Errors” to take some measures. If the decimal point blinks, it indicates that the current value is not the weight value.
7.3. Calibration-Related Functions (Calf) Step 1 Press the ON/OFF key to turn the indicator ON (weighing mode) if it is in the OFF mode. Remove the CAL key cover and press the CAL key. Cal is displayed to indicate that the indicator enters the calibration mode. Step 2 Press the ENTER key to display Cal5et . The indicator enters the mode of calibration with an actual load. To return to the weighing mode, press the ESC key. Step 3 Press the ∧ or ∨ key to select CalfF and press the ENTER key.
Function No. Parameter or Setting range Function Calf01 0 to 3 Unit Calf02 0 to 5 Decimal point position Calf03 1 to 6 Minimum division Calf04 Weighing 1 to 999999 capacity Calf05 0 to 100 Description Unit of the weight value 0: None 1: g 2: kg 3: t 4: lb (USA version) Decimal point position of the weight value 0: None 123456 12345.6 1: 101 2: 102 1234.56 3 3: 10 123.456 4: 104 12.3456 5 5: 10 1.
Function No. Parameter or Setting range Calf06 0.0 to 5.0 Calf07 0.0 to 9.9 Function Default value Description Zero tracking time Performs zero tracking using this setting in combination with the setting of the zero tracking band. When 0.0, zero tracking will not be performed. Zero tracking band Unit: second in 0.1 increments Performs zero tracking using this setting in combination with the setting of the zero tracking time. When 0.0, zero tracking will not be performed. 0.0 0.
Function No. Parameter or Setting range Calf08 0.0 to 9.9 Calf09 0 to 9 Function Default value Description Stability detection time Performs stability detection using this setting in combination with the setting of the stability detection band. When 0.0, stability detection will not be performed. (Stable all the time) Stability detection band Unit: second in 0.1 increments Performs stability detection using this setting in combination with the setting of the stability detection time.
Function No. Parameter or Setting range Calf13 1 to 3 Calf14 1 to 2 Calf15 0 to 1 Calf16 0 to 1 Calf17 -7.00000 to 7.00000 Calf18 0.00001 to 9.99999 Calf19 1 to 999999 Function Description Condition to judge over when the gross weight is negative. Over at A/D negative over or negative 1: Gross weight < -999999 gross weight 2: Gross weight < negative weighing capacity 3: Gross weight < -19 d Condition to judge over when the net Over at weight is negative.
Input voltage CALF18 CALF17 CALF19 0 Displayed weight 0 NOTE: Record the setting values of Calf17, 18 and 19 in the “Setting List” at the end of the manual to prepare against a failure. By changing the parameters of Calf17, 18 and 19, “zero calibration” and “span calibration” can be adjusted optionally. (Digital span accuracy approx. 1/5000: The accuracy varies depending on the load cell output accuracy and the conditions of calibration.) Except for an emergency, perform calibration with an actual load.
7.4. Calibration Errors When an error occurs during calibration, the error number is displayed. If calibration is finished without releasing the error, the setting values will be restored to the state before calibration. Calibration errors and remedies Error No. Description C err1 C err2 C err3 C err4 C err5 C err6 C err8 C err7 Remedy Make the minimum division greater or make the The display resolution (weighing weighing capacity smaller.
7.5. Load Cell Output Adjustment Add a resistor as shown below to adjust the load cell output. Use a resistor with a high resistance value and a low temperature coefficient. SIG- "C Err 3" When exceeding in the negative direction) EXC+ EXC+ r to is es d R dde a R e a d si s de tor d "C Err 2" (When exceeding in the positive direction) SIG+ SIG- EXC- SIG+ EXC- Fig.
8. General Functions General functions are divided into groups per function and are indicated by the group name with the function number. NOTE: General functions determine the AD-4408C performance and all the data are stored in the EEPROM. 8.1. Setting Procedure Step 1 While holding down the ENTER key, press the F key. fnc is displayed to indicate that the indicator will enter the general function mode. Step 2 Press the ENTER key. The indicator enters the general function mode.
Step 6 Press the ESC key. The function number disappears and the indicator returns to the state of step 2. Press the ESC key to store the setting values in the EEPROM and return to the weighing mode. NOTE: If a value exceeding the settable range is entered, err dt is displayed and the input is canceled. If the decimal point blinks, it indicates that the current value is not the weight value. 8.2.
8.2. Basic Functions (fncf) Function No. Parameter or Setting range Ffncf01 000000 to 111111 Function Disable key switch fncf02 0 to 6 F key fncf03 1 to 3 Display update rate fncf04 0 to 3 display Default value Description Each digit of the setting corresponds to a key switch. Only available in the weighing mode. 0: Does not disable the key switch function. 1: Disables the key switch function.
8.3. Standard Serial Output (Cl f) Function No.
9. Interface 9.1. Standard Serial Output The standard serial output with 0 to 20 mA can be connected to a device such as an A&D printer or remote display. The interface has no power source. Therefore, the external devices to be connected must have a power source. The setting values of the standard serial output are changed in the general functions Cl f01 to Cl f03. Type Data bits Start bit Parity Stop bit Baud rate Code 0 to 20 mA current loop 7 bits 1 bit 1 bit, even 1 bit 600, 2400 bps ASCII 9.1.1.
9.1.2. Output data The data format used is A&D standard format. This is a format to be used with an A&D printer or remote display and consists of two headers, data, unit and a terminator. A&D standard format Header 1 Header 2 Separator Data (ASCII code) Unit (five types) ASCII code ST US OL GS NT TR , 0 to 9 + SP (space) .
9.1.3. Data transfer mode Three data transfer modes are available; stream, auto printing and manual printing. Stream mode Auto printing mode Manual printing mode 9.2. Transmits data in sync with the display update rate. If the indicator can not catch up with the update rate because of the baud rate, the transmission is paused until the next updating. The transmitted data is the same as what is being displayed. Data that is not displayed is never transmitted.
Status LEDs LED RUN SD RD ERR ON Normal Transmitting Receiving • Setting error • CRC error • Station trouble OFF • Resetting • No signal Normal Fig.
9.2.1. Address map Remote register (Number of occupied stations: 4) Addresses are examples when the station number is set to 1.
Numeric values of the remote register All the values are hexadecimal. Negative values are expressed by the two’s complement. Decimal Hexadecimal (16 bits) Hexadecimal (24 bits) Hexadecimal (32 bits) -10 FFF6 FFFFF6 FFFFFFF6 -1 FFFF FFFFFF FFFFFFFF 0 0000 000000 00000000 1 0001 000001 00000001 10 000A 00000A 0000000A NOTE: Writing is prohibited in the internally reserved areas.
Remote I/O (Number of occupied stations: 4) Addresses are examples when the station number is set to 1.
AD-4408C --> Master station Master station --> AD-4408C Remote Buffer Remote Buffer Station Name Name input memory output memory RX0060 Net over RY0060 RX0061 Net under RY0061 RX0062 Gross over RY0062 RX0063 Gross under RY0063 RX0064 A/D over RY0064 RX0065 A/D under RY0065 Net in the RX0066 RY0066 center of zero Gross in the RX0067 0E6 RY0067 166 center of zero RX0068 Net display RY0068 RX0069 Gross display RY0069 RX006A Tare in progress RY006A Reserved RX006B Low battery RY006B internally RX006C Zero error
Remote I/O (Number of occupied stations: 2) Addresses are examples when the station number is set to 1.
AD-4408C --> Master station Remote Buffer Station Name input memory RX0020 Net over RX0021 Net under RX0022 Gross over RX0023 Gross under RX0024 A/D over RX0025 A/D under Net in the RX0026 center of zero Gross in the RX0027 0E2 center of zero RX0028 Net display RX0029 Gross display RX002A Tare in progress RX002B Low battery RX002C Zero error RX002D Tare error RX002E Net error RX002F In sync with 2 RX0030 RX0031 RX0032 RX0033 Reserved internally RX0034 RX0035 RX0036 RX0037 Request flag of RX0038 0E3 initiali
Remote I/O (Number of occupied stations: 1) Addresses are examples when the station number is set to 1.
9.2.2. Commands The write command is used to send a command to the AD-4408C from the master station. For details, refer to “Write command” in “9.2.3. Timing chart”. Command No. 0 0 0 0 0 0 0 0 Command data 1 2 3 4 5 6 7 8 Command Zero Clear zero Tare Clear tare Hold Net display Gross display Print command 9.2.3. Timing chart Below examples are when the station number is set to 1 and the number of occupied stations is set to 4.
Resuming from suspended modes When the AD-4408C is in a mode that suspends weighing, such as calibration or OFF mode, the remote READY flag (RX007B) becomes inactive because a correct weight value can not be output. To resume from this condition, take the same steps as described in “When the AD-4408C is turned on” above.
Write command Specify the data type to write by the command No. (RWw000E). Place the data to write in the command data (RWw000C to RWw000D). The read/write request (RY0003) is OFF. Read/write request (RY0003) Command No. (RWw000E) Command data (RWw000C to 000D) Command processing request (RY0002) Read/write response (RX0003) Command No. response (RWr000E) Command processing response (RX0002) Fig.
Error status flag When an error occurs to the AD-4408C, the remote READY flag (RX007B) becomes inactive and the error status flag (RX007A) becomes active to inform the master station of the error occurrence. The master station requests to reset the error status flag, by activating the request flag of error reset (RY007A).
10. Maintenance 10.1. Error Messages If an error message is displayed, refer to the chart below to take proper measures. Error message ad err ra err eeperr Calerr lb err C errX err dt 10.2. Cause Remedy Data can not be acquired Repair is required. from the A/D converter. Data can not be written into Repair is required. the battery backup memory. Perform initialization. Correct data can not be If initialization does not clear the read from the EEPROM. error, repair is required.
Display Chckey Chc Cl Chc CC Chc r5 Chc ad Chc in Chcpr9 C5 pr9 C5 eep Item to be checked Key switches Standard serial output CC-Link Testing terminal A/D (Load cell) Internal count Program version Program checksum Memory (EEPROM) checksum 10.2.2. Checking the key switches With Chckey displayed, press the ENTER key to enter the key switch check mode. In the key switch check mode, six squares ( ) are displayed. Each square corresponds to a key switch as shown below.
10.2.4. Checking the CC-Link With Chc CC displayed, press the ENTER key to enter the CC-Link check mode. Press the ∧ or ∨ key to change the address. Press the CAL key to transmit the request flag of initialization. 2 digits: Address (00 to 3F) 4 digits: Data (0000 to FFFF) 88.
10.2.8. Checking the program version With Chcpr9 displayed, press the ENTER key to display the version of the current program. The example below is when the program version is 1.00. p001.00 10.2.9. Checking the program checksum With C5 pr9 displayed, press the ENTER key to display the program checksum. The example below is when the checksum is EF. C500ef 10.2.10. Checking the EEPROM checksum With C5 eepEP displayed, press the ENTER key to display the EEPROM checksum.
10.3. Initialization Mode The initialization restores the contents of the battery backup RAM and EEPROM to the default values. The three types of initialization are available as shown below. Initialization mode Display RAM initialization ini ra General functions initialization inifnc All data initialization iniall Description Initializes the contents of the battery backup RAM only. As the zero and tare values are stored in the battery backup RAM, they will be restored to 0.
10.3.2. All data initialization Step 1 Remove the cover concealing the CAL key and press the CAL key. Cal is displayed to indicate that the indicator enters the calibration mode. Step 2 Press the ENTER key to display Cal5et . The indicator enters the mode of calibration with an actual load. To return to the weighing mode, press the ESC key. Step 3 Press the ∧ or ∨ key to select the all data initialization mode ( iniallLL ) and press the ENTER key. Step 4 All the status LEDs blink to prompt a confirmation.
10.4. Checking the Load Cell Connection Using the Digital Multimeter Using the digital multimeter, load cell connection can be checked easily. The figure below indicates the measurement points to check the connection. When a summing box is used, the same measurements are required inside the box. Fig.15 Checking the load cell connection Checking the load cell connection Measurement point EXC+ 1 EXC+ 1 SEN+ 2 What to measure How to judge Normally less than 100mV.
If the AD-4408C does not function properly, contact the nearest A&D dealer. Use the chart below to write necessary items before contacting the dealer. Item Record your value Description For 4-wire connection, a jumper is □ 4-wire connection required between EXC+ and Load cell connection SEN+, and between EXC- and □ 6-wire connection SIG-.
11. Setting List When performing maintenance, use the following list as a memo. In case of inquiry about the product, inform of the user setting. 11.1. Basic Functions Function No. Parameter or Setting range Ffncf01 000000 to 111111 fncf02 0 to 6 fncf03 1 to 3 fncf04 0 to 3 fncf05 0 to 9 Description Default value Disable key switch 000000 0: Does not disable the key switch function. (binary) 1: Disables the key switch function. Assigns a function to the F key.
11.2. Standard Serial Output Function No. Parameter or Setting range Cl f01 1 to 5 Cl f02 1 to 3 Cl f03 1 to 2 11.3. Description Output data 1: Displayed weight 2: Gross weight 3: Net weight 4: Tare weight 5: Gross/Net/Tare Data transfer mode 1: Stream 2: Auto printing 3: Manual printing Baud rate 1: 600 bps 2: 2400 bps Default value User setting 1 1 2 CC-Link Function No.
11.4. Calibration-Related Functions Function No. Parameter or Setting range Description Default value Calf01 0 to 3 Unit of the weight value 0: None 1: g 2: kg 3: t 4: lb (USA version) 2 Calf02 0 to 5 Decimal point position of the weight value: 10n 0 Calf03 1 to 6 Calf04 1 to 999999 Calf05 0 to 100 Calf06 0.0 to 5.0 Calf07 0.0 to 9.9 Calf08 0.0 to 9.
Function No. Parameter or Setting range Calf13 1 to 3 Calf14 1 to 2 Calf15 0 to 1 Calf16 0 to 1 Calf17 -7.00000 to 7.00000 Calf18 0.00001 to 9.99999 Calf19 1 to 999999 Calf20 0 to 1 Calf21 0 to 1 Calf22 1 to 2 Description Condition to judge over when the gross weight is negative. A/D negative over or 1: Gross weight < -999999 2: Gross weight < negative weighing capacity 3: Gross weight < -19 d Condition to judge over when the net weight is negative.
12. External Dimensions Unit: mm Fig.
MEMO Page 63 AD-4408C Weighing Indicator
MEMO AD-4408C Weighing Indicator Page 64
3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013 Telephone: [81] (3) 5391-6132 Fax: [81] (3) 5391-6148 JAPAN A&D ENGINEERING, INC. 1756 Automation Parkway, San Jose, California 95131 U.S.A.
