RICE LAKE WEIGHING SYSTEMS SCT-4X-PRONET Weight Transmitter User Guide

: June 17, 2024
: RICE LAKE WEIGHING SYSTEMS

Table of Contents

SCT-4X-PRONET Weight Transmitter
Specifications
Product Usage Instructions
1. Electrical Connection
2. Power Supply
3. Load Cells Excitation
4. Configuration Menu
- FAQ
How do I save my configuration settings?
What is the excitation voltage for the load cells?
What is the maximum power consumption of the product?

SCT-4X-PRONET Weight Transmitter

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Specifications

Excitation Voltage: 5 V
Output Voltage: 6 mV/V max
Input Voltage: 12 to 48 Vdc
Output Voltage: 48Vac or 60Vdc, 0.5 A max
Power Consumption: 4.5 W max

Product Usage Instructions

1. Electrical Connection

Connect the load cells as follows:

In LOAD CELL 2, 3, 4: Connect SEN + to EXC + and SEN – to EXC
–
The SENSE circuit compensates for all 4 load cells.

2. Power Supply

For UL approved models, power the equipment using a 12 to 24 Vdc
LPS or Class 2 power source.

3. Load Cells Excitation

Load cells require a 5 V excitation voltage and output a maximum
of 6 mV/V.

To access the configuration menu:

Reboot the weight transmitter
Press the key when display shows the 888888 message
Select options to configure functioning mode, scale capacity,
resolution, etc.

FAQ

How do I save my configuration settings?

To save your configuration settings, press the C key repeatedly
until “save?” appears. Press to save or press C to exit without
saving.

What is the excitation voltage for the load cells?

The load cells require a 5 V excitation voltage.

What is the maximum power consumption of the product?

The product has a maximum power consumption of 4.5 W.

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SCT-4X-PROFINET Quick Start Guide

May 25, 2023

PN 219721 Rev A

REF +

E+ +

SCT-4X-PROFINET
1. Electrical Schematic
–

EXC EXC + SIG SIG +

S+

S-

EREF –
LOAD CELL 2, 3, 4

E+ +

EXC EXC + REF REF + SIG SIG +

–

S+

S-

E-

LOAD CELL 1

!
In LOAD CELL 2, 3, 4 connect: SEN + to EXC + SEN – to EXC –
!
The single SENSE circuit compensates all 4 load cells.
!
Load cells excitation: 5 V. Load cells output: 6 mV/V max.

35 34 33 32

31 30 29 28

27 26 25 24

23 22 21 20 19 18

LOAD CELL 4 LOAD CELL 3 LOAD CELL 2

LOAD CELL 1

ETHERNET I/O PORT 1 ETHERNET I/O PORT 2

Internal use

J1

JUMPER J1

12

345

678

RS485 TERM ON RS485
16 17

For UL approved models: equipment to be powered by 12 to 24 Vdc LPS or Class 2 power source.
!
CONSUMPTION: 4.5 W max.
!
INPUT: 12 to 48 Vdc
OUTPUT: 48Vac or 60Vdc, 0.5 A max

12 / 24 Vdc COM IN 1 IN 2 RL1 RL2 COM A(+) B(-)

-+

i

Manuals are available from Rice Lake Weighing Systems at www.ricelake.com/manuals

Warranty information is available at www.ricelake.com/warranties

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2. Key Functions

Key Functions

EXC – 35 EXC + 34 SIG – 33 SIG + 32 EXC – 31 EXC + 30 SIG – 29 SIG + 28 EXC – 27 EXC + 26 SIG – 25 SIG + 24 EXC – 23 EXC + 22 REF – 21 REF + 20 SIG – 19 SIG

18

SCT-4

CELL 4

CELL 3

CELL 2

CELL 1

gg kkgg
lbb
00
ZERO

~
TARE

NNEETT MODE

FF PRINT

W W11 SSPP11

W W22 SSPP22

PWR

INPUT

RELAYS

FIELDBUS

485

PROFINET

Earth 1 24Vdc 2 GND 3 COM 4 IN 1 5 IN 2 6 RL 1 7 RL 2
8 COM
16 A + 17 B –

Configuration menu Decreases digit / Scrolls down.
Increases digit / Scrolls up. Enters the setup. Selects digit to modify. Enters a step / Confirms.
C Clears / Exits a step (no save).

Weighing mode
Clears the displayed gross weight.
Short press: executes semiautomatic tare. Long press: allows to enter known tare.
Long press: switches between scales (only in Mode 2 “ind.Ch”). Short press: executes data transmission on the printer serial port. Long press: Setpoint configuration.
C ON/Standby of the instrument.

3. Indicator Light Descriptions

0 Weight on zero.
~ Unstable weight.
NET A tare is active.

F A function is active.

W1 SP1

Digital output 1 is active.

W2 SP2

Digital output 2 is active.

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SCT-4X-PROFINET

4. Configuration Menu

1. Reboot the weight transmitter 2. Press the key when display shows the 888888 message:

888888

1 TYPE

2 nChan

Functioning mode (section 5).

HOW TO EXIT THE MENU AND SAVE YOUR CONFIGURATION
Press C key repeatedly until save? appears; press to save or press C to exit without saving.

3 Chan

4 div.deC 5 CapaC

Scale configuration: capacity, resolution and decimal point (section 6).

6 Cel.Cap

7 Cel.sen

Theoretical calibration (section 7).

8 dead.ld

9 0.Calib

Zeroing of the deal load (pre-tare zeroing) (section 8).

10 zero 11 span

Calibration with sample weight (section 9).

12 adC.uv 13 inPus
14 ouPu
15 485 16 fldbus 17 exCl.Ch 18 filer 19 unb.sr 20 CloCk

Load cells diagnostic (section 10).

1 inP.01 2 inP.02

Digital input configuration (section 11).

1 ou.01 2 ou.02

Digital output configuration (section 12).

RS485 port configuration (section 13).

Fieldbus configuration (section 14).

Load cell exclusion (section 15).

Weight filter (section 16).

Unbalancing (section 17).

Date and time setting (with optional card only).

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5. Function Mode

888888

1 TYPE

2 nChan 3 CHAN

1 dep.Ch 2 ind.Ch

Digital equalization box mode. Multi-scale mode.

Set the number of active channels.

Select the channel to be programmed (for ind,Ch mode only).

Function Mode

MODE 1 “DEP.CH” Allows to connect directly the load cells, equalize them (if necessary) and transmit each load cell data and the total weight through Fieldbus.

EXC – 35 EXC + 34 SIG – 33 SIG + 32 EXC – 31 EXC + 30 SIG – 29 SIG + 28 EXC – 27 EXC + 26 SIG – 25 SIG + 24 EXC – 23 EXC + 22 REF – 21 REF + 20 SIG – 19 SIG

18

SCT-4

CELL 4

CELL 3

CELL 2

CELL 1

gg kkgg
lbb 00
ZERO

~
TARE

NNEETT MODE

FF PRINT

W W11 SSPP11

W W22 SSPP22

PWR

INPUT

RELAYS

FIELDBUS

485

PROFINET

Type

= dep.Ch

n.Chan = 2 to 4

Chan

not visible

Earth 1 24Vdc 2 GND 3 COM 4 IN 1 5 IN 2 6 RL 1 7 RL 2 8 COM 16 A + 17 B –

MODE 2 “IND.CH” Allows to manage up to 4 independent scales and transmit all data of each scale through Fieldbus.

EXC – 35 EXC + 34 SIG – 33 SIG + 32 EXC – 31 EXC + 30 SIG – 29 SIG + 28 EXC – 27 EXC + 26 SIG – 25 SIG + 24 EXC – 23 EXC + 22 REF – 21 REF + 20 SIG – 19 SIG

18

SCT-4

CELL 4

CELL 3

CELL 2

CELL 1

gg kkgg
lbb 00
ZERO

~
TARE

NNEETT MODE

FF PRINT

W W11 SSPP11

W W22 SSPP22

PWR

INPUT

RELAYS

FIELDBUS

485

PROFINET

Type

= ind.Ch

n.Chan = 1 to 4

Chan

= 1 to 4

Earth 1 24Vdc 2 GND 3 COM 4 IN 1 5 IN 2 6 RL 1 7 RL 2 8 COM 16 A + 17 B –

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SCT-4X-PROFINET

6. Maximum Scale Capacity, Increment and Decimal Point Settings

888888

div…d. eC

4 div.deC

Set the decimal point position and the minimum scale increment*1 ( 0,001 – 0,002 – 0,005 – 0,01 – 0,02 – 0,05 – 0,1 – 0,2 – 0,5 – 1 – 2 – 5 – 10 – 20 – 50 ).

5 dCiapv.adCeC

Set the maximum scale capacity*2 (max 999999 ).

Examples:
For a 60000 lb scale, with 2 lb increment: div.deC = 2 CapaC = 60000

For a 10000 g scale, with 0.1 g increment: div.deC = 0,1 CapaC = 10000,0

For a 3000 lb scale, with 0.05 lb increment: div.deC = 0,05 CapaC = 3000,00

1 Increment = the amount that the scale will increment by as weight is added or removed. 2 Maximum capacity = the maximum weight that can be measured using the scale you are creating.

7. Theoretical Calibration

888888

div…d. eC

6 dCielv.CdaepC

Set the total load cells capacity (up to 999999).

7 dCielv.sdenC

Set the load cells sensitivity (up to 999999).

8 dead.ld
1. Set div.deC and CapaC (section 4).

Dead load weight (from -9999.9 to 99999.9).
2. Set in Cel.Cap the total load cells capacity (sum of the nominal load cell capacities).

3. Set in Cel.sen the theoretical signal value of the load cells.

4. Enter in dead.ld step. The display shows the theoretical dead load value. Modify the value and/or confirm with .

5. Save calibration (Press C key many
times until save? message will appear, then press to confirm).

MODE 1 “DEP.CH”

EEXXCC- – 3355 EEXXCC + 3344 SSIIGG– 3333 SSIIGG++ 3322 EEXXCC- – 3311 EEXXCC

3300 SSIIGG– 2299 SSIIGG++ 2288 EEXXCC- – 2277 EEXXCC + 2266 SSIIGG– 2255 SSIIGG++ 2244 EEXXCC- – 2233 EEXXCC + 2222 RREEFF- – 2211 RREEFF + 2200 SSIIGG– 1199 SSIIGG++ 1188

SCT-4

CCEELLLL4 4

CCEELLLL3 3

CCEELLLL2 2

CCEELLLL1 1

gg

kkgg

lbb 000

~

NNNEEETTT

FF

W W W111 SSSPPP111

ZZEERROO

TTAARRE E

M MOODDE E PPRRININTT

W W W222 SSSPPP222

PPWWRR

INNPPUUT T

RERELLAAYYSS

FIELDBUS PROFINET

448855

MODE 2 “IND.CH”

EXC – 35 EXC + 34 SIG – 33 SIG + 32 EXC – 31 EXC + 30 SIG – 29 SIG + 28 EXC – 27 EXC + 26 SIG – 25 SIG + 24 EXC – 23 EXC + 22 REF – 21 REF + 20 SIG – 19 SIG

18

SCT-4

CELL 4

CELL 3

CELL 2

CELL 1

gg kkgg
lbb 00
ZERO

~ TARE

NNEETT MODE

FF PRINT

W W11 SSPP11

W W22 SSPP22

PWR

INPUT

RELAYS

FIELDBUS

485

PROFINET

Earth 1 24Vdc 2 GND 3 COM 4 IN 1 5 IN 2 6 RL 1 7 RL 2 8 COM 16 A + 17 B –

EEaarrtthh 11 2244VVddcc 22 GNNDD 33 COOM M 44 INN 11 55 INN 22 66 RRLL 11 77 RRLL 22 88 CCOOMM 1166 AA ++ 1177 BB –

Insert in Cel.sen parameter, the load cells sensitivity sum value:
(mV/V cell1) + (mV/V cell2) + (mV/V cell3) + (mV/V cell4)

For each scale to calibrate, insert in Cel.sen parameter the average sensitivity value of the load cells:
(mV/V cell1) + (mV/V cell2) + … + (mV/V celln) n

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8. Zeroing Mechanic Tare (pre-tare zeroing)

888888

div…d. eC

Zeroing Mechanic Tare (pre-tare zeroing)

9 d0.iCva.ldieCb

Zeroing of the pre-tare (or mechanical tare).

This functionality allows to zero the weigh of the scale structure (e.g. empty silo, conveyor, etc.) without changing the calibration in memory.

9. Calibration with Sample Weight

888888

div…d. eC

10 zdeirv.odeC

Zero point acquisition.

11 Span

Sample weight acquisition.

1. Unload the scale.

2. Enter the zero step to adjust the 3. Load the scale with span weight. zero point.

4. Enter the span step, type the span weight value and press to adjust.

5. Save adjustment (Press C key many
times until save? message will appear, then press to confirm).

10.Load Cell Diagnostics (µV/V)

888888

div…d. eC

12 adC.uv

It allows to verify signal of each channel. It must be included into the range 0 to 3 mV/V. Signal have to be stable and it have to increase by increasing the weight on the scale.

i
With more channels connected, it’s possible to scroll between channels with keys and .

7

SCT-4X-PROFINET

11. Inputs Settings

888888

div…d. eC

13 inpus

1 diinvp..d0e1C

See INP.02

2 inp.02

12. Outputs Settings

888888

div…d. eC

14 oUTPUT

1 oduiv..d0e1C

2 ou.02

12.1 HOW TO PROGRAM SETPOINTS

1 none 2 dis.key 3 off 4C 5 prin 6 mode 7 are 8 zero

Input disabled. When input is active, transmitter keyboard is locked. When input is active, transmitter reboots.
Emulation of C key.
Emulation of key. Emulation of key. Emulation of key. Emulation of key.

See ou.02.
1 no/nC 2 funC

Normally open / normally close.

1 0none

Output disabled.

2 1Gros

Setpoint on gross weight.

3 2ne

Setpoint on net weight.

1. In weighing mode, press for 3 second.

2. Select the setpoint to modify:

s.1on

Set the output 1 setpoint value.

s.2on

Set the output 2 setpoint value.

3. Press C key to save and exit
the menu.

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13. RS485 Port

888888

div…d. eC

15 485

1 sdeiv.addedC 2 baud

RS485 Port
485 address (01 to 98). Baud rate (1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200).

i
The RS485 port is configured by default to communicate in Modbus RTU.

14. Fieldbus Settings

888888

div….d. eC 16 FLDBUS

dYiESv.deC

Fb.ini … prone … Fb.Se?

No

Set the IP address:

Fb.Se

1 Aduiv….dCefCG Dynamic IP address. 2 ip.add Static IP address. 3 ndeiv….dmesCk Subnet mask. 4 Ga.way Default gateway.

i
The name of the Profinet node to use in the project linked to the network master node is provided by dini-, being the last Byte of the IP address incorporated in the device configuration, also when dynamic IP is used. Ex. IP – 192.168.1.10, the node name will be dini-010.

9

SCT-4X-PROFINET

15. Load Cell Exclusion (for dependent channel systems)

If a load cell is broken, it’s possible to temporarily exclude the channel where it is connected and continue to weigh, pending replacement.
! WARNING: this operation reduces the accuracy of the weighing system. We recommend use for liquid weighing or in
applications where the load is evenly distributed.

888888

div…d. eC

17 exCl.Ch

1 dnionv.edeC

2 Ch1

3 Ch2

4 Ch3

5 Ch4
Visible only in DEP.Ch mode.

No channel excluded. Channel 1 excluded. Channel 2 excluded. Channel 3 excluded. Channel 4 excluded.

16. Weight filter

888888

div…d. eC

18 filer

The active weight filter is displayed, alternating with the weight value. Press and keys to scroll through the available filters (from slowest to fastest, F1 to F10).

17. Unbalancing

888888

div…d. eC

19 unb.sr

Visible only in DEP.Ch mode.

The instrument has an active unbalance function as standard that signals if the load is unevenly distributed, compared to the condition saved via step STR.UNB.
Imbalance occurs when the load distribution percentage value on a cell deviates by at least 10% for more than 3 seconds.

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Example:

25%

Programming Errors

34%

23% 45%

20% 65%

15%

25%

Condition saved

23%

20% 20%

15% 15%

5%

The unbalance condition is signaled via Modbus / Fieldbus or a digital output (refer to the complete manual to set the output).

i
This function is only available if EXCL.CH = NoNE. Use this function only in systems where the load is evenly distributed.

18.Programming Errors

MESSAGE preC.

DESCRIPTION
Calibration error

Err.pn Er 11 Er 12

Calibration error Calibration error Calibration error

Er 37
Er 39 C.er. 36 C.er. 37

Calibration error
Instrument not configured Calibration error Calibration error

Err.mo

Weight unstable

adC.err
Cel.err Er.Cel.1 … Er.Cel.4

A/D converter error Global load cell error Load cell error

SOLUTION
First calibrate the zero point (zero), then proceed with sample weight acquisition (span) (section 9). Check the connection of the load cell. Verify the load cell signal is stable, valid and greater than the previously acquired point. Increase the calibration weight. Check the signal from the load cell increases when weight is incremented on the scale. Repeat calibration and verify capacity and division have been correctly set. Transmitter needs to be configurated. Verify the signal from the load cell is not negative. Verify the signal from the load cell is not negative. Check in adC.uv parameter that the signal is stable. If the connection of the cells is with 4 wires, check that the sense jumpers are inserted.
Converter failure. Reboot the instrument.
Signal anomaly: check the load cells connection.
Signal anomaly: check the indicated load cell connection.

11

SCT-4X-PROFINET

19. Profinet
19.1 PROFINET REGISTERS – dep.CH / ind.ch (1 SCALE)

Data Gross weight Net weight

Byte
0 (MSB) 1 2 3 (LSB) 4 (MSB) 5 6 7 (LSB)

8 (MSB)
Input status register
9 (LSB)

10 (MSB)

Command status register

11 (LSB)

Output status register

12 (MSB) 13 (LSB)

Selected page µV Channel 1 µV Channel 2 µV Channel 3 µV Channel 4

14 (MSB) 15 (LSB) 16 (MSB) 17 (LSB) 18 (MSB) 19 (LSB) 20 (MSB) 21 (LSB) 22 (MSB) 23 (LSB)

DESCRIPTION Bytes 1, 2, 3 and 4 contain the Gross Weight value.

Bytes 5, 6, 7 and 8 contain the Net Weight value.

Bit 15(msb) Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 (lsb)

Active channel. Active channel. No function. No function. No function. No function. Status of input n. 2. Status of input n. 1.

Bit 7(msb) Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (lsb)

1 = Scale unloaded (gross weight = 0). Tare PT (1 = PT tare is active). Tare (1 = Tare is active). Overload condition (0 = No; 1 = Overload). Underload condition (0 = No; 1 = Underload). Weight Stability (0 = Unstable; 1 = Stable). Gross Weight Polarity (0 = “+”; 1 = “-“). Net Weight Polarity (0 = “+”; 1 = “-“).

Last received command.

Bit 7(msb) Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (lsb)

Last command result. Last command result. Last command result. Last command result. Counting of processed commands. Counting of processed commands. Counting of processed commands. Counting of processed commands.

No Function.

Bit 7(msb) … Bit 2 Bit 1 Bit 0(lsb)

No function. … No function. Digital output 2 status (0 = OFF; 1 = ON). Digital output 1 status (0 = OFF; 1 = ON).

Shows the value of the selected page (3001).

Bit 15 Bit 14

0

1

0

1

Active Channel Channel 1 Channel 2 Channel 3 Channel 4

Bytes 16 and 17 contain the µV value of the channel 1.

Bytes 18 and 19 contain the µV value of the channel 2.

Bytes 20 and 21 contain the µV value of the channel 3.

Bytes 22 and 23 contain the µV value of the channel 4.

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19.2 PROFINET REGISTERS – ind.ch (4 SCALES)

Data

Byte

DESCRIPTION

0 (MSB)
Status register scale 1
1 (LSB)

Status register scale 2
Status register scale 3
Status register scale 4

2 (MSB) 3 (LSB) 4 (MSB) 5 (LSB) 6 (MSB) 7 (LSB)

Input status register

8 (MSB)

Command status register
Output status register

9 (LSB) 10
11 (LSB) 12 (MSB) 13

Bit 15(msb) Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 (lsb)
Bit 7(msb) Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (lsb)

Not used. Not used. Not used. Scale active (0 = “no”; 1 = “yes”). Decimals (00 = 0; 01 = 1; 10 = 2; 11 = 3)
Unit of Measure (00 = “g”; 01 = “kg”; 10 = “t”; 11 = “lb”).
Tare PT (1 = PT tare is active). Tare (1 = Tare is active). Net Weight Polarity (0 = “+”; 1 = “-“). 1 = Scale unloaded (gross weight = 0). Overload condition (0 = No; 1 = overload). Underload condition (0 = No; 1 = underload). Stability (0 = “unstable”; 1 = “stable”). Gross Weight Polarity (0 = “+”; 1= “-“).

Same as Status register scale 1.

Bit 15(msb) Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 (lsb)

Active channel. Active channel. No function. No function. No function. No function. Status of input n. 2. Status of input n. 1.

No function.

Bit 15 Bit 14

0

1

0

1

Active Channel Channel 1 Channel 2 Channel 3 Channel 4

Same as Command status register page 10.

Same as Output status register page 10.

Selected page
Gross weight scales 1, 2, 3 and 4

14 15 (LSB) 16, 20, 24, 28 (MSB) 17, 20, 24, 29 18, 22, 26, 30 19, 23, 27, 31 (LSB)

Shows the value of the selected page (2000).
Bytes 16, 17, 18 and 19 contain the Gross Weight of scale 1. Bytes 20, 21, 22 and 23 contain the Gross Weight of scale 2. Bytes 24, 25, 26 and 27 contain the Gross Weight of scale 3. Bytes 28, 29, 30 and 31 contain the Gross Weight of scale 4.

Profinet

13

SCT-4X-PROFINET

19.3 PROFINET REGISTERS FOR COMMAND SENDING

Data Not used
Command

Byte 0
1

DESCRIPTION Always 0. Main available commands:

Value 00 Hex 01 Hex 02 Hex 03 Hex 0A Hex 0B Hex 19 Hex 22 Hex

Command No command Scale zeroing Tare Preset Tare Setpoint 1 setting Setpoint 2 setting Digital output setting Reboot the weight transmitter

Parameter 1 Parameter 2

2 (MSB) 3 4 5 (LSB) 6 (MSB) 7 8 9 (LSB) 10(MSB) … 31 (LSB)

First parameter of the command. Parameter is always expressed in absolute mode (no decimals, no sign).
Second parameter of the command. Parameter is always expressed in absolute mode (no decimals, no sign).
Used in advanced configuration, refer to the complete Fieldbus manual for further information.

EXAMPLE 1

For zeroing the weight on the scale:

2. Set the command in byte 2

Byte 1 2

Value 00 Hex 01 Hex

EXAMPLE 2
For setting a preset tare of 1 000 lb:
1 . Set the tare value in parameter 1 (byte 3, 4, 5, 6) 2. Set the command in byte 2

Byte 1 2 3(MSB) 4

Value 00 Hex 03 Hex 00 Hex 00 Hex

5 6(LSB)

03 Hex E8 Hex

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