Define Instruments SC-WEI Operating Manual

SC-WEI

Weighing Controller

This intelligent weighing controller accepts input directly from a 4-wire or a 6-wire strain gauge.

The SC–WEI has a number of advanced functions designed speci cally for the weighing industry, and is simple to set up and operate. It also features output

Order Codes

and input isolation, eliminating the need for any special consideration when interfacing to analog/serial inputs, or PCs/PLCs/HMIs.

Contents

1 - Speci cations ............................. 2

2 - Features ........................................ 3

3 - Casing & Display ........................ 6

4 - Wiring ......................................... 8

5 - Input Setup & Calibration ........ 11

6 - Setpoint Setup ........................... 22

SC–WEI100 Strain gauge input + 2 relays

–HV –LV

Options

-A 1 x mA/V analog output

-S2S 1 x RS232 (screw terminal)

-S4S 1 x RS485 (screw terminal)

85–265V AC / 95–370V DC 15–48V AC / 10–72V DC

7 - Setpoint Direct Access ............... 25

8 - Reset PIN Numbers .................. 25

9 - Factory Analog Output

Calibration .................................. 26

A - Appendix A - Input Functions ... 27

B - Appendix B - Serial Modes ........ 29

Input 4/6-wire strain gauge, 1–5mV/V

Power supply HV (85–265V AC/95–370V DC) or LV (15–48V AC/10–72V DC)

Relay output 2 x 5A Form A relays

Analog output 1 x isolated 16 bit analog output, 4–20mA or

0–10V. Can be wired for either current or voltage. Fully scalable. Window programmable over any range within the controller's full-scale range.

Serial port Isolated RS232 or RS485 (screw terminals) Output mode: Custom ASCII, Modbus RTU slave, Gedge, Ranger A (5 updates/sec) or Print. Data rate: 300–38400 baud. Parity: Odd, even or none.

SPECIFICATIONS

OPTIONAL

Max power 5W, fully optioned, 8 loadcells

Excitation 5V DC excitation supplied (powers up to 8 x 350Ω loadcells)

Sampling rate Up to 60Hz

Resolution 18 bit

Accuracy 0.005% of reading

Temperature dri Typically 3ppm/°C

Factory calibrated for 0–10,000 counts (2mV/V sensor gain at full scale). Features 2

cal sets, enabling the user to save and restore a previous calibration.

Security Calibration and setpoint functions have independent security code access

FEATURES

2.1 - Batching

To access batching features, the controller's Mode must be set to Batch (see 5.2F). It is then possible to perform the following functions from the input pins:

Batch This function is used to display the live weight of the system but take

regular 'batches' of product without continually changing the setpoint. When the Batch function is activated the display will tare and SP 1 and SP 2 will turn on.

Batch Reset

Batch Pause Pauses the batching process and holds the current batched weight on

Resets the batch value to zero and halts any current batching operations.

the display.

button or rear

Batch Resume Resumes the batching process a er it has been paused, or if power was

lost during a previous batch.

See 5.2H–K and Appendix A for instructions on setting up and operating these features.

2.1A - Gain in Weight (GIW) Batching Direction

The Batching Direction parameter is set in 5.2G, and should be set to GIW (Gain in Weight) for applications where the weight increases as product is added to the weighing system.

E.g. Setting a setpoint value of 50Kg for SP 1 and 45Kg for SP 2 and enabling GIW batching will al-

low the user to  ll a container to 50Kg, with a potential speed change at 45Kg. (See 2.1C for an alternative method of setting up SP 2.)

The cycle is initiated when the Batch function is triggered. The display will tare, and when 45Kg net weight is shown, SP 2 will drop out. As product continues to feed, at 50Kg SP 1 will drop out, halting the  ll.

If one of the display rows is con gured to show Live (see 5.3B–C), it will now show the gross weight (I.e. Now 1050Kg, if the starting gross weight was 1000Kg). The user can then trigger the Batch function again to call another 50Kg batch.

2.1B - Loss in Weight (LIW) Batching Direction

The Batching Direction parameter is set in 5.2G, and should be set to LIW (Loss in Weight) for applications where the weight decreases as product is removed from the weighing system.

E.g. Setting a setpoint value of 50Kg for SP 1 and 45Kg for SP 2 and enabling LIW batching will al-

low the user to  ll a container to 50Kg, with a potential speed change at 45Kg. (See 2.1C for an alternative method of setting up SP 2.)

The cycle is initiated when the Batch function is triggered. The display will tare, and when 45Kg net weight is discharged, SP 2 will drop out. As product continues to be discharged, at 50Kg SP 1 will drop out, halting the product  ow.

If one of the display rows is con gured to show Live (see 5.3B–C), it will now show the gross weight (I.e. Now 950Kg, if the starting gross weight was 1000Kg). The user can then trigger the Batch function again to call another 50Kg batch.

In this mode if there is not enough product to drop a batch, then the instrument will advise the operator by showing the message Low Product. If gross > SP 1, the Batch Value is reset to zero and the display  ashes Batch. SP 1 is turned on (and SP 2 if set up). If gross < SP 1, batching is not started.

2.1C - Setpoint Tracking

In applications where the batch weight is continuously being changed, it is possible to con gure SP 2 so that it tracks SP 1, and always turns o at a  xed amount below the required batch weight.

E.g. If your initial batch weight was 100Kgs and you wanted SP 2 to turn o 5Kgs before it reached

the batch weight, you would set up the SP 1 value for 100Kgs and the SP 2 value for -5Kgs, and set the Trail SP 1 option to On (see 6.2D).

This would cause SP 2 to turn o at 95Kgs (i.e. 100Kgs - 5Kgs). Then if you wanted the next batch weight to be 200Kgs, you only need to change SP 1 to 200Kgs, and without altering SP 2 it will now turn o at 195Kgs (200Kgs - 5Kgs).

2.2 - Input signal averaging

This controller has input signal averaging (see 5.6), to reduce noise and optimise stable measurement. If your input signal contains large noise spikes, you can increase the size of the Averaging Window to ensure that these are still averaged. If the change in input exceeds the Averaging Window value it will not average, ensuring fast response when there are large di erences between readings.

Note that increasing the window size too far will reduce the ability of the controller to respond quickly to real changes in input signal.

2.3 - Tare

To access tare features, the controller's Mode must be set to Normal (see 5.2F). It is then possible to Tare/Reset Tare from the

button or rear input pins:

Tare This feature 'zeroes' the display, and is usually used to deduct the weight

of the container from the total weight, leaving only the weight of the product.

Tare Reset

See 5.2H–K and Appendix A for instructions on setting up and operating these features.

This feature clears the current tare value and shows the gross weight on the display.

2.4 - Zero maintenance

The Zero Maintenance feature is used to automatically compensate for slow dri in loadcell output due to factors such as temperature change, rain and dust accumulation over time.

When Auto Zero is enabled (see 5.5B), the controller display will zero automatically if changes to the loadcell are within the user speci ed Capture Band, Motion Band and Zero Band parameters (see 5.5C–E):

Capture Band (5.5C) This is the maximum number of display counts that the controller

will automatically zero within. The Capture Band is referenced to the current zero value. If the input value on the load cell is not within the Capture Band setting then the controller displays the current loadcell value and does not zero.

Capture Band can be set from 1 to 254 counts, and should always be set to less than the smallest weight to be measured. Setting the Capture Band to 0 will turn the auto zero feature o .

Motion Band (5.5D) This provides a rate of change limit setting, to determine the num-

ber of counts/second allowed within the Capture Band. If the count change is within the Capture Band, but the speed of the count change is more than the selected Motion Band, then the controller displays the current loadcell value and does not zero.

The Motion Band can be set from 0 to 255 counts. Typical value is 1 or 2 counts/sec.

Zero Band (5.5E) This provides a limit for the number of counts of zero offset

allowed to accumulate, relative to the calibrated zero setting. If the accumulated zero offset becomes greater than this window, then the controller displays the current loadcell value and does not zero.

The suggested limit for the Zero Band is 2% of the calibrated span. If the controller fails to zero, check for mechanical or electrical faults.

CASING & DISPLAY

3.1 - Case dimensions

Dimensions (H x W x D) 101 x 45 x 120mm (3.98 x 1.77 x 4.72").

When calculating space requirements, please allow 30–50mm (1.2–2.0") clearance

above and below the unit for connectors and wiring.

DIN rail 35mm DIN rail mountable (rail not included)

Display 2 rows of 8 digits, 8mm (0.3") upper and lower case alphanumeric

101mm

(3.98")

45mm (1.77")

120 mm (4.72")

3.2 - Front panel

This button is used to access the Input Setup & Calibration menu (Section 5)

and the Factory Analog Output Calibration menu (Section 9).

This button is used to save your settings and advance to the next step in the

setup process. The function of a single keypress of this button from the operational display can be user programmed (see 5.2H).

This button is typically used to scroll through options or increase values in the

setup menu. Pressing this button from the main display will allow you to view/ reset the Peak value, and view the raw input value (see 3.3).

This button is typically used to scroll through options or decrease values in the

setup menu. Pressing this button from the main display will allow you to view/ reset the Valley value (see 3.3).

This button is used to access the Setpoint Setup menu (Section 6) and the Set-

point Direct Access menu (Section 7).

The front panel also features a 3-pin screw terminal which is active for models with serial output installed. For models without serial output, this terminal is inactive.

3.3 - Up and down button shortcuts

Pressing the and buttons from the main display allows instant access to a number of values held in the controller's memory. These variables will appear in the order shown below, and will cycle continuously at each press of the

Press the

to return to the main display. Peak/Valley may be reset to zero by pressing

and buttons at the same time while the variable is being displayed.

Up and down button shortcuts

Peak The maximum measured weight since the instrument was turned on or reset

Raw IP The current raw value of the input signal in mV

Valley The minimum measured weight since the instrument was turned on or reset

or button.

WIRING

BEFORE YOU BEGIN WIRING, ensure that the unit is switched o and the power supply is disconnected.

4.1 - Pinouts

Bottom View

Front View

Front

Top

Top View

Rear

Bottom

Key

4.1A 2 x Relay Output (4.3) 4.1B Serial Port (4.5)

4.1C Analog Output (4.4) 4.1D Analog Input Module (4.2)

4.1E Function Pins (4.6) 4.1F Power supply HV/LV (4.7)

Front

4.2 - Wire the strain gauge input module

Sense

+ EXC

+ Sense

Input sig. high

Input sig. low

EXC

Guard

Not connected

Sense

+ EXC

+ Sense

Input sig. high

Input sig. low

EXC

Guard

Not connected

SP1

SP2

Common

mA + mA –

V + V –

Wire your loadcell input module as shown in the diagram. This input module is pre-calibrated for 0–10,000 counts full scale with a

2.000mV/V load cell sensor.

See 4.1D

4.3 - Wire the relay outputs

Wire the relay outputs as shown. Your controller has two 5A form A relays and two setpoints. These can be individually programmed to operate within the total span range of the controller.

See 4.1A

4.4 - Wire the analog output (if installed)

If your controller has analog output  tted, wire it as shown for either voltage (0-10V) or current (4-20mA).

See 4.1C

Not connected

User 1

User 3

User 2

Common

4.5 - Wire the serial port (if active)

If you ordered an S2S or S4S, then the serial terminal on the front of your controller is active and can be wired as shown.

NB: Models without serial output will have an inactive serial

-S2S

TXD RXD

SGND

terminal installed on the front panel.

See 4.1B

4.6 - Wire the function pins

Connect external switches to enable a function to be executed when its switch is activated.

Pin functions are user con gurable, and can be set up in 5.2I–K.

See 4.1E and Appendix A

-S4S

D+ D–

SGND

4.7 - Wire the power supply

NEVER connect your low voltage controller to mains power.

Wire your controller for low or high voltage power supply, as show in the diagrams below. Check the label on the unit against the colour of the connector:

› Orange = High voltage (85-

High voltage

265V AC, 95-370V DC)

(HV)

HV power

supply

› Black = Low voltage (15-

48V AC, 10-72V DC)

Low voltage (LV)

LV power

supply

See 4.1F

Once you have completed the wiring process it is safe to switch on your power supply. Ensure that your display is functioning before you proceed.

+DC/live AC

–DC/neutral AC

+DC/live AC

–DC/neutral AC

INPUT SETUP & CALIBRATION

5.1 - Enter F1 PIN number

A Enter the calibration mode by pressing the button.

_ _ _ ENTER F1 PIN scrolls across the bottom row and 0 appears in the top row.

Use the press

If an incorrect PIN number is entered, _ _ _ ACCESS DENIED scrolls across the display and it returns to normal operating mode.

You will have the opportunity to change your PIN number at the end of this section (5.10). If you have forgotten your PIN number, see Section 8.

and buttons to enter your security code (factory default 1). Then

. If the correct PIN is entered, setup is started at 5.2.

5.2 - Input setup

A _ _ _ INPUT SETUP scrolls across the bottom row and Skip appears in the top

row. Press

B _ _ _ SUPPLY REJECTION FREQUENCY scrolls across the display. Use the

and

C _ _ _ SAMPLING RATE scrolls across the bottom row and the current sampling

rate appears in the top row. Use the the following list: 1Hz, 2Hz, 5Hz, 10Hz, or 50Hz/60Hz (50 or 60Hz will depend on your selection in 5.2B above). Then press

D _ _ _ DECIMAL POINT POSITION scrolls across the bottom row and the current

selection appears in the top row. Use the (default), 0.0, 0.00, 0.000 or 0.0000, and then press

buttons to select 50Hz or 60Hz, and then press .

to skip to 5.3, or the

button and then to Enter input setup.

and buttons to select an option from

and buttons to select No DP

to accept and continue.

E _ _ _ ROUNDING scrolls across the bottom row and the current display rounding

appears in the top row. Using the 5, 10, 20, 50, 100, 200, 500, or 1000. Then press

and buttons, select: None (default), 2,

Rounding is quoted in display counts and is not in uenced by decimal point position. For example, if your input signal is 5.3, the display will show: 5.3 (for rounding=None), 5.4 (for rounding=2), 5.5 (for rounding=5), 5.0 (for rounding=10), etc.

F _ _ _ MODE scrolls across the bottom row and the current weighing mode ap-

pears in the top row. Use the Batch, and then press

and buttons to select Normal (default) or

 If you selected Normal, skip to 5.2H now.

 If you selected Batch, continue to 5.2G now.

In Normal (default) mode the controller displays the gross or net weight on the display, and does not perform any batch calculations. In Batch mode the controller displays batch or gross weight, and SP 1 and SP 2 function as dedicated batch control setpoints (see 2.1).

G _ _ _ BATCHING DIRECTION scrolls across the bottom row and the current

direction appears in the top row. Use the

and buttons to select either: LIW (loss in weight, for emptying operations) or GIW (gain in weight, for  lling operations). Then press

See Section 2.1 for additional information.

For 5.2H–K, please refer to the list of input functions in Appendix A.

H _ _ _ PROG BUTTON scrolls across the bottom row and the current selection

appears in the top row. Referring to the table in Appendix A, use the

and

buttons to select a function to be performed when the button is pressed:

Hold, Tare

, Batch2, Zero, Peak, Peak Rst or Print. Then press .

I _ _ _ USER INPUT1 scrolls across the bottom row and the current selection ap-

pears in the top row. This controls the function that will be performed when the User 1 input pin (see 4.6) is activated. Referring to the table in Appendix A, use the Print, Gross, Start

and buttons to select: Lock, Tare1, Batch2, Zero, Peak, Peak Rst,

or Stop2. Then press .

J _ _ _ USER INPUT2 scrolls across the bottom row and the current selection ap-

pears in the top row. This controls the function that will be performed when the User 2 input pin (see 4.6) is activated. Referring to the table in Appendix A, use the Print, Gross, Start

and buttons to select: Hold, Tare1, Batch2, Zero, Peak, Peak Rst,

or Stop2. Then press .

K _ _ _ USER INPUT3 scrolls across the bottom row and the current selection ap-

pears in the top row. This controls the function that will be performed when the User 3 input pin (see 4.6) is activated. Referring to the table in Appendix A, use the and buttons to select: Tare1, Batch2, Zero, Peak, Peak Rst, Print, Gross, Start

Tare feature is only available when the Mode is set to Normal (see 5.2F).

Batch, Start and Stop features are only available when the Mode is set to Batch (see 5.2F).

or Stop2. Then press .

5.3 - Display setup

Note that where Net/Batch is indicated, the option that will be displayed is controlled by the weighing mode selected in 5.2F. Normal mode = Net, Batch mode = Batch.

A _ _ _ DISPLAY SETUP scrolls across the bottom row and Skip appears in the

top row. Press to skip to 5.4, or the button and then to Enter display setup.

B _ _ _ LINE 1 DISPLAY SOURCE scrolls across the bottom row, and the currently

selected line 1 (top row) display source appears. Use the select: Net/Batch or Live, and then press

and buttons to

C _ _ _ LINE 2 DISPLAY SOURCE scrolls across the bottom row, and the currently

selected line 2 (bottom row) display source appears. Use the to select: O , Net/Batch or Live, and then press

and buttons

5.4 - Calibration

This unit has been pre-calibrated for 0–10,000 counts (2mV/V sensor gain at full scale).

A _ _ _ CALIBRATION TECHNIQUE scrolls across the bottom row and Skip ap-

pears in the top row. Press select: Auto, mV/V, Zero, E_Cal, or Cal Set. Then press

to skip to 5.5, or use the and buttons to

 If you selected Auto, complete steps 5.4B–F now.

 If you selected mV/V, complete steps 5.4G–I now.

 If you selected Zero, complete step 5.4J now.

 If you selected E_Cal, complete steps 5.4K–L now.

 If you selected Cal Set, complete steps 5.4M–N now.

Auto calibration uses zero and span values to calculate the scale and o set. This is the most accurate calibration method, but requires known low and high input signals, usually supplied by test weights. Zero and span calibration procedures are performed separately.

mV/V uses values from the loadcell manufacturer’s test certi cate.

Zero allows manual adjustment of the calibrated zero o set.

E_Cal allows the user to view and edit the electronic calibration values (zero o set and scale

factor). These two values are updated when any calibration is performed. Noting these values and entering them into another instrument will copy the calibration. You may also 'trim' these values to alter the current calibration.

Cal Set allows the user to select and switch between calibration sets, giving them the option of saving and restoring a previous calibration.

Auto calibration

B _ _ _ CAL SET X – CALIBRATE ZERO scrolls across the bottom row , where X is

the Cal Set where the current calibration will be stored (see 5.4M–N). – CALIBRATE ZERO scrolls across, and the currently selected option appears. Use the

and buttons to select Yes or No, and then press .

 If you selected Yes, continue to 5.4C now.

 If you selected No, skip to 5.4D now.

C _ _ _ REMOVE WEIGHT – PRESS P TO ACCEPT scrolls across the bottom row

and the no-load value appears in the top row. Remove the weight. Use the and

buttons to adjust the no-load value if required, and then press .

D _ _ _ CALIBRATE SPAN scrolls across the bottom row and the current selection

appears. Use the

and buttons to select Yes or No, and then press .

 If you selected Yes, continue to 5.4E now.

 If you selected No, skip to 5.4F now.

E _ _ _ ADD CAL WEIGHT – ENTER DESIRED SPAN – PRESS P TO ACCEPT scrolls

across the bottom row and the current span value appears in the top row. Apply a calibration weight to the weigh platform. Then use the

and buttons to

adjust the value, and press to accept.

F If Auto calibration was successful, you will be directed back to the operational

display. (To enter step 5.5, you must select Skip at 5.4A.)

If calibration fails, _ _ _ CALIBRATION FAILED will scroll across the display and you will be directed back to the operational display. Check your signal and connections, and then repeat the calibration procedure.

mV/V calibration

G _ _ _ ENTER TOTAL FULL SCALE WEIGHT OF LOADCELLS IN COUNTS scrolls

across the bottom row and the current selection appears in the top row. Using the

and buttons, enter the total full scale weight of the connected

loadcell(s) in counts, referring to the manufacturer's test certi cate. Then press

H _ _ _ ENTER MV/V FROM LOADCELL scrolls across the bottom row and the

current selection appears in the top row. Using the the mV/V (or average mV/V) of the connected loadcell(s), and then press

and buttons, enter

I _ _ _ SET ZERO NOW ? scrolls across the bottom row and the current selection

appears. Use the

Selecting Yes sets your zero position when the loadcells are powered up and in position.

and buttons to select Yes or No, and then press .

mV/V calibration is now complete. You will be directed back to the operational display. (To enter step 5.5, you must select Skip at 5.4A.)

Zero (o set) calibration

J _ _ _ ADJUST OFFSET scrolls across the bottom row and the current zero value

appears in the top row. Place a known weight on the weigh platform if required, and use the

The o set will be automatically calculated to match the desired weight, and the scale factor will not be altered. (Normally the weight would be removed and the value would be zero.)

and buttons to enter the desired value. Press to accept.

Zero calibration is now complete. You will be directed back to the operational display. (To enter step 5.5, you must select Skip at 5.4A.)

E_Cal calibration

K _ _ _ E_CAL ZERO OFFSET scrolls across and the current selection appears in

the top row. Use the

This is updated a er each calibration to show the controller's internal ZERO OFFSET electronic calibration value.

and buttons to adjust the zero o set, and press .

L _ _ _ E_CAL SCALE FACTOR scrolls across and the current selection appears in

the top row. Use the

This is updated a er each calibration to show the controller's internal SCALE FACTOR elec- tronic calibration value.

and buttons to adjust the scale factor, and press .

E_Cal calibration is now complete. You will be directed back to the operational display. (To enter step 5.5, you must select Skip at 5.4A.)

Cal set selection

M _ _ _ SELECT CAL SET scrolls across and the current selection appears in the top

row. Use the

and buttons to choose Set 1 or Set 2, and then press .

This feature allows you to save two sets of calibration values on the controller. This enables you to roll back to a previous calibration, if necessary. The set that you select in this step will be the active calibration set.

N _ _ _ CALIBRATION TECHNIQUE scrolls across the bottom row and Skip ap-

pears in the top row. You are now back at 5.4A. Press the

and buttons to select a new calibration method, and then press .

to skip to 5.5, or use

5.5 - Zero maintenance

See Section 2.4 for more information on zero maintenance parameters.

A _ _ _ ZERO MAINTENANCE scrolls across the bottom row and Skip appears in

the top row. Press

B _ _ _ AUTO ZERO scrolls across the bottom row and the selection appears in the

to skip to 5.6, or the button and then to Enter.

top row. Use the

and buttons to select On or O , and press .

 If you selected On, continue to 5.5C now.

 If you selected Off, skip to 5.5E now.

If AUTO ZERO mode is On, the controller’s o set will be automatically adjusted so that the instrument reads zero when it senses that the scale is not loaded (see 2.4).

C _ _ _ CAPTURE BAND scrolls across the bottom row and the selected capture

band appears. Adjust this value using the

This is referenced to the current zero value, and is the maximum number of display counts that the controller will zero within. CAPTURE BAND can be set from 1 to 254 counts, and should always be set to less than the smallest weight to be measured.

and buttons, and press .

D _ _ _ MOTION BAND scrolls across the bottom row and the selected motion

band appears. Adjust this value using the

This provides a rate of change limit setting, to determine the number of counts/second allowed within the CAPTURE BAND. MOTION BAND can be set from 0 to 255 counts. Typical value is 1 or 2 counts/sec.

and buttons, and press .

E _ _ _ ZERO BAND scrolls across the bottom row and the selected zero band ap-

pears. Adjust this value using the

This provides a limit for the number of counts of zero o set allowed to accumulate, relative to the calibrated zero setting. If the accumulated zero o set becomes greater than this window, then the controller displays the current loadcell value and does not zero. The suggested limit for the ZERO BAND is 2% of the calibrated span.

and buttons, and then press .

5.6 - Averaging

Your controller has input signal averaging, optimising stable measurement. If the change in input exceeds the averaging window value it will not average, ensuring fast response when there are large di erences between

Input signal in counts

readings. (E.g. When product is being dropped into a bag.)

A _ _ _ AVERAGING PARAMETERS scrolls across the bottom row and Skip ap-

pears in the top row. Press

to skip to 5.7, or the

Enter averaging setup.

Input exceeds averaging window

Averaging window in displayed counts

Number

of samples

Sampling

button and then to

B _ _ _ AVE SAMPLES scrolls across the bottom row and the currently selected av-

eraging appears in the top row. Using the of input samples that the controller will average, and then press

Increasing the number of samples will stabilise measurement, but it will also slow down response rates. A typical value is 4.

and buttons, alter the number

C _ _ _ AVE WINDOW scrolls across the bottom row and the currently selected

averaging window value appears in the top row. Using the alter the signal averaging window. Then press

If your input signal contains large noise spikes, you can increase the size of the averaging window to ensure that these are still averaged. However, increasing the window size too far will reduce the ability of the controller to respond quickly to real changes in input signal. Setting AVE WINDOW to 0 will give continuous averaging as per the selected averaging samples. A typical value is 10% of your system capacity.

and buttons,

5.7 - Analog output setup

To calibrate your analog output, see Section 9.

Factory analog output calibration is precisely set before shipping this instrument, and should not be adjusted unless advised by the manufacturer.

A _ _ _ ANALOG OUTPUT SETUP scrolls across the bottom row and Skip appears

in the top row. If your controller does not have analog output installed, (or you do not wish to con gure your analog output now), press

Otherwise, press the

button and then to Enter analog output setup.

to skip to 5.8.

B _ _ _ DATA SOURCE FOR ANALOG O/P scrolls across the bottom row and the

current analog output data source appears in the top row. Use the buttons to select an option from: Net/Batch, or Live, and then press

Note that where Net/Batch is indicated, the option that will be displayed is controlled by the weighing mode selected in 5.2F. Normal mode = Net, Batch mode = Batch.

and

C _ _ _ LOW SCALE VALUE FOR ANALOG O/P scrolls across the bottom row and

the currently selected low scale display value appears in the top row. Use the and

buttons to enter your cal low position, and then press .

D _ _ _ HIGH SCALE VALUE FOR ANALOG O/P scrolls across the bottom row and

the currently selected high scale display value appears in the top row. Use the

and buttons to enter your cal high position, and then press .

5.8 - Serial setup

A _ _ _ SERIAL SETUP scrolls across the bottom row and Skip appears in the top

row. If your controller does not have a serial port installed, (or you do not wish to con gure your serial options now), please press

Otherwise, press the

button and then to Enter serial setup.

to skip to 5.9.

B _ _ _ SERIAL MODE scrolls across the bottom row and the current serial mode

appears in the top row. Use the

and buttons to choose between: ASCII

(custom), Modbus (RTU), Gedge, Ranger A (Ranger A), or Print. Then press

 If you selected Gedge, continue to 5.8C now.

 If you selected Ranger A or Print, skip to 5.8D now.

 If you selected ASCII or Modbus, skip to 5.8H now.

See Appendix B for more information about the available serial modes.

C _ _ _ OUTPUT FORMAT scrolls across the bottom row and the currently selected

Gedge output format appears in the top row. Use the choose between C1, C2, or C3, and then press

and buttons to

 Please skip to 5.8G now.

See Appendix B.3 for more information on Gedge output formats.

D _ _ _ DATA SOURCE scrolls across the bottom row and the currently selected

serial data source appears in the top row. Use the an option from: Net/Batch, Live, or Peak, and then press

Note that where Net/Batch is indicated, the option that will be displayed is controlled by the weighing mode selected in 5.2F. Normal mode = Net, Batch mode = Batch.

and buttons to select

E The step that you proceed to now will depend on the Serial Mode that you

selected in 5.8B:

 If your Serial Mode = Print, continue to 5.8F now.

 If your Serial Mode = Ranger A, skip to 5.8G now.

F _ _ _ PRINT UNITS scrolls across the bottom row and the current units appear in

the top row. These will be printed on the Weigh Ticket (see B.5) when the print function is triggered. Use the Grams, Kgs, Tonnes, Lbs or KN, and then press

and buttons to choose between None,

 Please skip to 5.8H now.

This option controls the units that are printed on the Weigh Ticket (see B.5). It does not perform any conversion calculations. Please scale the instrument to match the printed units.

G _ _ _ OUTPUT MODE scrolls across the bottom row and the current output

mode appears in the top row. Use the (continuous) or Pulsed, and then press

In Cont. (continuous) mode, the controller outputs a continuous stream of data. In Pulsed mode, the controller outputs a single string when the print function is triggered from a user input button or pin (see 5.2H–K and Appendix A).

and buttons to select either Cont.

H _ _ _ BAUD RATE scrolls across the bottom row and the current selection ap-

pears in the top row. Use the 1200, 2400, 4800, 9600, 19200 or 38400. Then press

and buttons to select one of: 300, 600,

I _ _ _ PARITY scrolls across the bottom row and the currently selected parity ap-

pears in the top row. Using the and then press

and buttons, select: None, Odd or Even,

J The step that you proceed to now will depend on the Serial Mode that you

selected in 5.8B:

 If your Serial Mode = Gedge, Ranger A, or Print, continue to 5.8K now.

 If your Serial Mode = ASCII or Modbus, skip to 5.8L now.

K _ _ _ DATA BITS scrolls across the bottom row and the currently selected data

bits appears in the top row. Using the then press

and buttons, select: 7 or 8, and

 The last step only applies to ASCII or Modbus mode. Proceed to 5.9 now.

L _ _ _ SERIAL ADDRESS scrolls across the bottom row and the currently selected

serial address appears in the top row. Use the serial address, and then press

The serial address parameter is used to identify a particular device when it is used with other

and buttons to alter the

devices in a system. (It applies particularly to Modbus mode when used on an RS485 serial network.) The serial address of the controller must be set to match the serial address de ned in the master device.

Refer to Appendix B for more information on serial modes and registers.

5.9 - Clock setup

A _ _ _ CLOCK SETUP scrolls across the display and toggles with Skip. Press to

skip to 5.10, or the

button and then to Enter and set the date and time.

B _ _ _ HOURS scrolls across the display and toggles with the current selection.

Use the

The controller's internal clock uses 24 hour time; you cannot select a.m. or p.m.

and buttons to adjust the hour (from 0 to 23), and press .

C _ _ _ MINUTES scrolls across the display and toggles with the current selection.

Use the

A er pressing the seconds timer will be reset to zero, and will immediately begin counting.

and buttons to adjust the minutes (from 0 to 59), and press .

D _ _ _ DATE scrolls across the display and toggles with the current selection. Use

the

and buttons to adjust the date (from 1 to 31), and press .

E _ _ _ MONTH scrolls across the display and toggles with the current selection.

Use the

and buttons to select a month (from Jan to Dec), and press .

F _ _ _ YEAR scrolls across the display and toggles with the current selection. Use

the

and buttons to adjust the display to the current year, and press .

5.10 - Edit F1 PIN number

A _ _ _ EDIT F1 PIN scrolls across the bottom row and Skip appears in the top row.

Press then

B _ _ _ ENTER NEW F1 PIN scrolls across the bottom row and the current PIN (de-

fault 1) appears in the top row. Using the F1 PIN number. Then press

to skip and return to the operational display, or the button and

to Enter and change your PIN number.

and buttons, enter your new

to exit to the operational display.

SETPOINT SETUP

6.1 - Enter F2 PIN number

A Enter setpoint setup mode by pressing and holding the button for 3 seconds.

_ _ _ ENTER F2 PIN scrolls across the bottom row and 0 appears in the top row.

Use the press

If an incorrect PIN number is entered, _ _ _ ACCESS DENIED scrolls across the display and it returns to normal operating mode.

You will have the opportunity to change your PIN number at the end of this section (6.3). If you have forgotten your PIN number, see Section 8.

and buttons to enter your security code (factory default 1). Then

. If the correct PIN is entered, setup is started at 6.2.

6.2 - Setpoint setup

A _ _ _ EDIT SETPOINT scrolls across the bottom row and Skip appears in the

top row. Press setpoint to edit, and then press

B _ _ _ SP VALUE scrolls across the bottom row and the current value for the

selected setpoint appears in the top row. Using the the display value at which the selected setpoint will activate, and then press

C The step that you proceed to now will depend on which setpoint you are editing

(selected in 6.2A):

 If you are currently editing SP 1, skip to 6.2E now.

 If you are currently editing SP 2, continue to 6.2D now.

D _ _ _ TRAIL SP1 scrolls across the bottom row and the tracking setting for the

now to skip to 6.3, or use the and buttons to select a

and buttons, adjust

selected setpoint appears in the top row. Using the O or On, and then press

A setpoint with TRAIL SP1 enabled will track the setpoint value of SP 1, with the setpoint value of the tracking setpoint becoming an o set value.

and buttons, select

E The step that you proceed to now will depend on your controller's weighing

mode (selected in 5.2F):

 If your controller is in Normal mode, continue to 6.2F now.

 If your controller is in Batch mode, skip to 6.2J now.

F _ _ _ SP SOURCE scrolls across the bottom row and the activation source for the

selected setpoint appears in the top row. Use the Net or Live, and then press

and buttons to choose

G _ _ _ SP ACTIVATION scrolls across the bottom row and the current selection

appears in the top row. Using the to operate Above or Below the setpoint value, and then press

Above: Relay turns on above the setpoint value and o below it. Below: Relay turns on below the setpoint value and o above it.

and buttons, select the relay activation

H _ _ _ HYSTERESIS VALUE scrolls across the bottom row and the hysteresis value

for the selected setpoint appears in the top row. Use the adjust this value if required, and then press

and buttons to

 If you set the Hysteresis Value to 0, skip to 6.2J now.

 If you set the Hysteresis Value to anything else, continue to 6.2I now.

The HYSERESIS VALUE de nes the separation band between setpoint activation and deactiva- tion, and will operate as per the HYSTERESIS TYPE setting selected in 6.2I.

I _ _ _ HYSTERESIS TYPE scrolls across the bottom row and the hysteresis type

for the selected setpoint appears in the top row. Using the select either Alarm or Cntrl (control), and then press

Alarm - SP VALUE controls setpoint activation point. HYSTERESIS VALUE controls setpoint deactivation point.

Hysteresis band

Energised Above

Energised Below

Hysteresis band

Cntrl - SP VALUE controls setpointdeactivation point. HYSTERESIS VALUE con- trols setpoint reactivation point.

Energised Above

Hysteresis band

and buttons,

Hysteresis band

Energised Below

J _ _ _ MAKE DELAY scrolls across the bottom row and the current make delay

time for the selected setpoint appears in the top row. This is the time delay

between setpoint activation, and when the relay turns on. Adjust this value in

0.1 second increments using the

and buttons, and then press .

K _ _ _ USER ACCESS ? scrolls across the bottom row and the direct access permis-

sion setting for the selected setpoint appears in the top row. Use the to select either O or On, and then press

When enabled, this option allows the selected setpoint's value to be edited directly a er pressing the tions. Each setpoint can individually have this option enabled or disabled. See Section 7.

button, without needing to enter a PIN number or go through all of the other op-

and

L _ _ _ EDIT SETPOINT scrolls across the bottom row and Skip appears in the top

row. You are now back at 6.2A. To edit another setpoint, follow the instructions from 6.2A–L again. If you do not wish to edit another setpoint, press now to skip to 6.3.

6.3 - Edit F2 PIN number

A _ _ _ EDIT F2 PIN scrolls across the bottom row and Skip appears in the top row.

Press then

to skip and return to the operational display, or the button and

to Enter and change your PIN number.

B _ _ _ ENTER NEW F2 PIN scrolls across the bottom row and the current PIN (de-

fault 1) appears in the top row. Using the F2 PIN number. Then press

to exit to the operational display.

and buttons, enter your new

If none of the setpoints have their direct access option enabled then this feature will be disabled and the

A Begin by pressing the

B The name of the  rst access-enabled setpoint will appear in the bottom row and

the current value for that setpoint will appear in the top row. Using the

C The name of the next access-enabled setpoint will appear on the display, along

with its setpoint value. Repeat step 7B. The direct access menu will proceed through all access-enabled setpoints in this fashion. Pressing bled setpoint will exit and return to the operational display.

SETPOINT DIRECT ACCESS

button will not respond to a short button press. (See 6.2K.)

button for less than 3 seconds.

and

buttons, adjust the selected value. Then press to accept and continue.

for the last ena-

If you have forgotten your PIN number(s), follow the procedure below to reset both the F1 and F2 PINs to their factory default of 1.

This procedure will also allow you to view the current so ware installed on your controller, which may be required for support purposes.

A Press

execute and you may need several tries to get it right.)

B A message will appear on the display, with details of the unit's current so ware

con guration (Product Name, Firmware Version, and Macro Version). At the end, you will see PIN RESET TO 1.

C Both the F1 PIN number and the F2 PIN number have now been reset to '1'.

RESET PIN NUMBERS

, and at the same time. (This key combination can be di cult to

D You can change these, if required, by following the instructions in 5.10 (for the

F1 menu) and 6.3 (for the F2 menu), using '1' to enter each menu initially.

Do not access this feature unless instructed by the manufacturer.

Factory analog output calibration is precisely set before shipping this instrument. For analog output scaling, see 5.7.

A Start with the controller powered o . Power up while holding the

B _ _ _ ENTER F1 PIN scrolls across the bottom row and 0 appears in the top row.

Use the press

If an incorrect PIN number is entered, _ _ _ ACCESS DENIED scrolls across the display and it returns to normal operating mode.

FACTORY ANALOG OUTPUT CALIBRATION

button.

and buttons to enter your security code (factory default 1). Then

. If the correct PIN is entered, continue to 9C.

If you have forgotten your PIN number, see Section 8.

C _ _ _ CALIBRATE ANALOG O/P? scrolls across the bottom row and the current

selection appears in the top row. Use the

No, and then press

 If you selected Yes, connect a mA or volt meter across the analog output

connector (see 4.4), and then continue to 9D.

 If you selected No, the display will return to normal operating mode.

D _ _ _ CAL LOW ANALOG O/P scrolls across the bottom row and a calibration

number, displayed in internal units (mA/V), appears in the top row. Using the

and buttons, calibrate your low analog output as required, and press .

E _ _ _ CAL HIGH ANALOG OUTPUT scrolls across the bottom row and a calibra-

tion number, displayed in internal units (mA/V), appears in the top row. Using

and buttons to select Yes or

the press

F Factory analog output calibration is now complete. The display will return to

normal operating mode.

and buttons, calibrate your high analog output as required, and

A number of user programmable functions are accessible from the

APPENDIX A - INPUT FUNCTIONS

button and rear pins (see 5.2H–K). Note that availability of the Tare/Batch and Start/Stop fea- tures are subject to your weighing mode, as selected in 5.2F.

User programmable input functions

Function Btn/Pin & Activation

Time

Hold

Lock

Tare

(see 2.3)

Continuous

½ sec

2+ sec

Description

Freezes the display value.

Locks the control panel.

Tares display value ( ashes Tare).

Resets tare to zero ( ashes Tr Rst and then shows gross).

Batch

(see 2.1)

Zero

(see 2.4)

½ sec

2+ sec

½ sec

If no batch operation is active:

Performs a batch operation; display shows Batch

If a batch operation is in progress:

Current batch is paused; display shows Pause

If a batch operation has been paused, or you have just powered up following a power loss during batching:

Controller will resume without resetting the batch value; display shows Resume

Resets the batch value to zero and  ashes BT RST. Any current batching operations will be halted.

Zeroes the weight if the zero o set (i.e. the di erence between the current no load weight and the calibration no load value) is within the ZERO BAND (see 2.4).

If the o set is less than the limit set in ZERO BAND (see

5.5E), the zero value is updated and the display  ashes

Zero. If the o set is greater than the limit set in ZERO BAND, the zero value is not updated and the display scrolls OUTSIDE OF ZERO BAND!

2+ sec

Resets the zero o set value to the original calibration o set value. Display  ashes Rs Zer and then shows gross.

User programmable input functions

Function Btn/Pin & Activation

Time

Peak

Peak Rst

(see B.5)

Gross Continuous

Start

Stop

½ sec

2+ sec

Continuous

½ sec

Description

Displays the peak value for 2 seconds.

Sets the peak value to the current input value ( ashes Peak Rst).

Displays the peak value continuously.

Sets the peak value to the current input value ( ashes Peak Rst).

Sends a single Ranger A output string.

SERIAL MODE (5.8B) must be set to Ranger A, and OUTPUT MODE (5.8G) must be set to Pulsed.

Displays the gross value continuously.

Starts a new batch, or resumes the batching process a er it has been paused.

Pauses the batching process and holds the current batched weight on the display.

2+ sec

Resets the batch value to zero and halts any current batching operations.

APPENDIX B - SERIAL MODES

B.1 - Custom ASCII mode

Custom ASCII is a simple, custom protocol that allows connection to various PC con guration tools. ('Custom ASCII' di ers from the 'Modbus (ASCII)' protocol used by some devices.) Custom ASCII command strings must be constructed in this order:

Start - Use 'S' for the start character of a command string (not case sensitive). This

must be the  rst character in the string.

Controller Address - Use an ASCII number from '1' to '255' for the controller address.

If the character following the start character is not an ASCII number, then address '0' is assumed. All controllers respond to address '0'.

Read/Write Command - Use ASCII 'R' for read, 'U' for unformatted read, or 'W' for

write (not case sensitive). Any other character aborts the operation.

In Custom ASCII mode, data is normally read as formatted data (which includes decimals and any text characters that may be selected to show units). However it is also possible to read unformatted data by using a 'U' in the read command. There is no unformatted write command, as when writing to  xed point registers, any decimal point and text characters are ignored.

number from '1' to '65535'. This character must be speci ed for a write com- mand, but may be omitted for a read command, (in which case the controller will respond with the data value currently on the display).

Separator Character - The separator character can be either a space or a comma,

and is used to separate the register address from the data value.

Data Value - Must be an ASCII number. The absolute limits for this number are

–

1000000 to +1000000, but note that not all registers will accept this range.

Message Terminator - This is the last character, and must be either a '$' (dollar) or

an '*' (asterisk). Neither of these characters should be used elsewhere in the

message string. If '$' is used, a 50ms minimum delay is inserted before a reply is sent. If '*' is used, a 2ms minimum delay is inserted before a reply is sent.

Custom ASCII Read/Write Examples

Example Description

SR$ Read display value from all controllers, 50ms delay.

S15R$ Read display value from controller address 15, 50ms delay.

S3U40* Read unformatted data in channel 4 from controller address 3, 2ms delay.

S2W2 –10000$ Write

SWT CHAN_1$ Write ASCII text string Chan_1 to channel 1 text register, 50ms delay.

–

10000 to the display register of controller address 2, 50ms delay.

Controller Response - A er the controller has completed a read or write instruction,

it responds by sending a carriage return/line feed (CR/LF) back to the host. If the instruction was a read command, the CR/LF follows the last character in the ASCII string. If it was a write command, CR/LF is the only response sent back. The host must wait for this before sending further commands to the controller. If the controller encounters an error, it will respond with a null (0x00) CR/LF.

Custom ASCII Registers - Active for models with relay output installed

16 Bit Unsigned

Address Function

32 Bit Signed

Address Function

1 Alarm status

(SP1=Bit 0, SP2=Bit 1)

65 Hysteresis setpoint 1

66 Hysteresis setpoint 2

71 Make delay setpoint 1

72 Make delay setpoint 2

3 Tared/Batch weight (net)

4 mV

39 Live weight (gross)

16 Tare value

12 Peak

13 Valley

6 Setpoint 1

7 Setpoint 2

34 D/A scale low value

36 D/A scale high value

B.2 - Modbus (RTU) mode

Modbus (RTU) is an industry standard RTU slave mode that allows connection to a wide range of devices. Modbus registers are all holding registers, and should be accessed via function codes 3 and 6.

Register addresses are displayed in the Modicon™ 5-digit addressing format. I.e. Register 65=40065 (subtract 1 for direct addressing).

Modbus (RTU) Registers - Active for models with relay output installed

16 Bit Unsigned

Address Function

40001 Alarm status

(SP1=Bit 0, SP2=Bit 1)

40065 Hysteresis setpoint 1

40066 Hysteresis setpoint 2

40071 Make delay setpoint 1

40072 Make delay setpoint 2

32 Bit Signed (2 x 16 Bit)

LSW MSW Function

40515 40516 Tared/Batch weight (net)

40517 40518 mV

40521 40522 Live weight (gross)

40529 40530 Tare value

40525 40526 Peak

40527 40528 Valley

40535 40536 Setpoint 1

40537 40538 Setpoint 2

40587 40588 D/A scale low value

40591 40592 D/A scale high value

B.3 - Gedge mode

This serial mode is used to drive Gedge displays. Depending on your output format selected in 5.8C, the Gedge output string will be constructed as shown:

› C1= <STX> <Displayed Weight> <ETX>

› C2= <STX> <Displayed Weight> <D2> <D3> <D4> <D5> <D6> <D7> <ETX>

› C3= <STX> <Gross Weight> <Tare Weight> < Net Weight> <D2> <D3> <D4>

Gedge Command Strings

STX Start of transmission ( $02 )

ETX End of transmission ( $03 )

CR/LF Carriage return and Line feed ( $0D $0A )

Weight 8 ASCII alpha/numerics:

<Space or minus sign> <Space> <6 digits> (E.g. "– 002387") or <Space or minus sign> <6 digits and decimal> (E.g. "–002.387")

D2 Displayed weight identity. G: Gross. N: Net. T: Tare.

D3 M: Scale is in motion. S: Scale is still.

D4 I: In scale. O: Over scale. U: Under scale.

D5 Z: Gross is zero. ASCII Space: Gross is not zero.

D6 E: Stored tare is not zero. ASCII Space: Stored tare is zero.

D7 P: Print key operation. ASCII Space: No print key operation.

B.4 - Ranger A mode

Ranger A is a continuous output, used to drive remote displays and other instruments in the Rinstrum™ range. (Ranger is a trade name belonging to Rinstrum Pty Ltd.) Ranger A output strings are constructed as shown:

Start - STX character (ASCII 02)

Sign - Output value sign (space for + and dash for -)

Output Value - Seven character ASCII string containing the current output value and

decimal point. (If there is no decimal point, then the  rst character is a space. Leading zero blanking applies.)

Status - Single character output value status. 'U'=Under, 'O'=Over, 'E'=Error.

End - ETX character (ASCII 03)

B.5 - Print mode

This mode outputs a Weigh Ticket (as shown) to the serial port when the Print function is triggered from

the

The weigh ticket shows the current value of the selected Serial Data Source (as set in 5.8D), and the units selected in 5.8F.

Note that changing the display units in 5.8F does not perform any conversion calculations. You will need to scale the instrument to match the printed units.

A date and time will also be printed on the Weigh Ticket. In order to print the cur- rent date and time, Real-Time Clock hardware must be installed. If the required hardware is not installed, the controller time stamp will revert back to the  rmware revision date and time whenever the unit is restarted.

button or input pins (see 5.2H–K).

De ne Instruments

New Zealand (Head O ce)

10B Vega Place, Mairangi Bay,

Auckland 0632, New Zealand

PO Box 245 Westpark Village,

Auckland 0661, New Zealand

Ph: +64 (9) 835-1550 | Aus: 1800 810-820 Fax: +64 (9) 835-1250

sales@de neinstruments.co.nz

www.de neinstruments.co.nz

United States (Dallas, TX)

Ph: 214.926.4950

sales@de neinstruments.com

www.de neinstruments.com

South Africa (Johannesburg)

Ph: 087 945 2700

sales@de neinstruments.co.za

www.de neinstruments.co.za

SC-WEI MV5.3 Document Revision Code: SC-WEI-MAN-15V12 Date Code: 150827

Define Instruments SC-WEI Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual