Weighing Indicator/Controller for Loss in Weight (ADW-LW)
- For fast & accurate weight filling control
- Tests for sufficient hopper contents prior to initiating the fill
- Hopper replenishment and taring performed automatically
- System speed optimisation (self-learning)
- In Flight compensation
- 'Weight complete' output and totaliser functionality
- Stand alone system or additional control with PLC
The ADW-LW Weighing Indicator / Controller for Loss in Weight version adds the capability to manage and control the fill by the loss-in-weight method of containers such as bags, drums, etc, and provides sufficient control capability to allow for stand-alone operation without the need for a PC or PLC.
Functional description
On pressing the start contact the hopper contents level is checked to confirm that sufficient material is available to fulfil the Set Point value.
If this is correct, an Auto Tare occurs and the feed valve opens (relay 1) until Set Point is reached (SP-IF).
If on receiving a start input, the hopper level is less than the hopper low level (HLL) the feeding valve will be opened by relay 2, until the hopper high level (HHL) is reached. On reaching the high level a timer is started for a period set in
'Tl', after this period the discharge is started.
If a further start signal is received and product is now available, the result of more product in the hopper, then discharge can be initiated. The analogue output value is taken from the hopper gross value.
An optional printer will print the Set Point value of the target and actual achieved value, together with the bag number. With appropriate printers a Time and Date stamp can be given.
|
Inputs |
|
|---|---|
| Calibration | Automatic digital by use of keypad and 1 (or 2) known weights. Manual calibration can also be selected |
| Auto Tare | By pressing keys '>' and then 'R' display will zero. Auto tare value can also be viewed and manually changed if required. Auto tare value is retained on powerdown. |
| Sensitivity | Preset via DIL switches between 0.5 to 200mV/V |
| Excitation | 10V DC nominal, 150mA maximum |
| Compensation | By ± sense wires to compensate for cable, connection volt drops and any variation in 10V supply |
| Accuracy | 90 days ± 0.08% of reading ± 0.05% of FS typical |
| Drift | 0.002%ºC typical @ 2.5mV/V |
| DC Analogue Outputs | |
| DC Voltage | 0 to 5V, 0 to 10V, -10 to +10V, Max Current out 50mA |
| DC Current | 0 to 1mA, 0 to 20mA, 4 to 20mA, Max Voltage out 20mA |
| Accuracy | typical ± 0.08% of output, ± 0.08%FSD |
| Resolution | as display resolution, max 15 bits |
| Calibration | by 15-turn pre sets for gain and offset |
| Inversion | By keypad value |
| Isolation | ±130V RMS or DC max to analogue input or to any other port |
| Ranging | Fully keypad scalable over desired display range |
| PID | Power level, when selected = 12 bit resolution output |
| Communication Port CP Operation | |
| All display data can be accessed via the communications port along with relay, PID power and EEPROM status. All user configurable data can be changed including EEPROM enable/disable and relay reset (address code cannot be changed). |
|
| RS485/422 | For up to 32 instruments on 1 bus, 4 wire |
| RS232 | For printer or direct connection to 1 device, 3 wire |
| Cable Length | 1km (depending on baud rate) |
| Baud Rates | 300, 600, 1200, 2400, 4800, 9600 (19200 MANTRABUS only) |
| Electrical Isolation | ±130V RMS or DC max to analogue input or any other port |
| Formats | MANTRABUS and printer output formats |
| Power Supplies | |
| 220V-230V AC 50-60Hz 10W, 110V-120V AC 50-60Hz 10W, 9-32V DC 10W isolated | |
| Base ADW15 | |
| Displays | 7 segment LED 4.5 digit 10mm.3 x 3mm LED's 2 for relay status, 1 for program and hold indication. |
| Controls | |
| 4 membrane panel keys with tactile feedback. 1 scroll key to view/update parameter. 1 digit select key. 1 digit increment key. 1 reset key. Keypad disable by internal links behind front panel. Hold function by digit select key when in input mode. | |
| Data Retention/Protection | |
| Retention | 10 years for set up values, minimum of 100,000 write cycles |
| Protection of Data and Function(s) | Watchdog timer giving repeat auto resets. Impending power detection and hold off. Keypad security and time out |
| Environmental | |
| Storage Temperature | -20 to +70ºC |
| Operating Temperature | -10 to 50ºC |
| Relative Humidity |
95% maximum non condensing |
| CE Environmental Approvals | European EMC Directive 2004/108/EC, Low Voltage Directive 2006/95/EC |
Documents
Software
No relevant software available
Product order options
Please read the following before selecting the options for this product:
ADW-LW Base Unit - Standard Input (100mS). Digital Weighing Indicator/Controller comprising 4.5 digit LED display, Microprocessor module with Auto-Calibration, Auto-zero, Excitation output of 10V @ 150mA, Password Protected, Dual Set Point Relays.
Starting with the base model ADW-LW, select the options that you need to configure the device to meet your needs.
| Base Unit | Code |
|---|---|
| ADW Loss in Weight | ADW-LW |
| Outputs | Code |
| Analogue Output 0-5V | V02 |
| Analogue Output 0-10V | V04 |
| Analogue Output 0-1mA | A01 |
| Analogue Output 0-20mA | A02 |
| Analogue Output 4-20mA | A03 |
| Comms | Code |
| RS485/232 Comms Module | COM 1 |
| Serial Port | S01 |
| Power Supplies | Code |
| Power Supply 110V AC | W110 |
| Power Supply 240V AC | W240 |
| Power Supply 12/24V DC | W12/24 |
| Mounting | Code |
| Panel Mount | P |
| Din Rail Mounting | D |
| Accessories | Code |
| Comms Interface RS232 to 20mA | IF25 |
| VisualLink SCADA Software Full Version (Ex Works) | VLA |
| VisualLink Runtime Key (Ex Works) | VLR |
| VisualLink Runtime Key USB (Ex Works) | VLRU |
| VisualLink Runtime Software Key (Ex Works) | VLS |
| VisualLink SCADA Software Demo | VLD |
Batch Weighing Controller, 12 Ingredients or Components
Weighing Indicator/Controller for Fast Fill Operations
