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SCT-1100 Weight Transmitter

2.4

Grounding the System

For proper grounding and optimal functioning of the system, it is necessary to create a single point ground in

proximity of the instrument on which to connect the ground of the instrument connected cables. Connect the

ground point of the instrument, load cells and weighing structure directly to the ground bar of the electric panel or

to a grounding rod.

2.4.1

Instrument

Create a single point ground in proximity to the instrument, on which to connect the ground of the instrument and

the connected shielded cables (load cell cable, serial ports cables, etc.).

Example: use an end connector terminal block and connect this point to ground with a 4 mm

cable.

In the

SCT-1100

indicator, connect the terminal 2 (GND) to earth with a ground cable having a diameter as large as

possible (maximum diameter supported: 2.5 mm²).

2.4.2

Load Cells and Junction Box

When the load cells are connected to the instrument through a junction box, the shielding of the cell cables and the

instrument must be connected to the grounding of the junction box.
When the load cells are directly connected to the instrument, the shielding of the cell cables must be connected to

the single point ground. Use a cable having a 4 mm² diameter, if the single ground is a few feet away; use a copper

cable having at least a 16 mm² diameter, for longer distances.
Use a ground plate of a length to obtain a total resistance of grounding lower than 1

Ω

System cabling should be kept as short as possible to minimize noise potential. After exiting conduit or other

shielding, a ferrite should be used prior to conductor termination.

Figure 2-1. Grounding Example

Procedures not expressly described in this manual are considered improper use of the equipment.

Ensure the platform is level or the loading cells are resting evenly.

All connections must be made with respect to local zone and environment standards.

Follow the recommended electrical precautionary measures described in

Section 2.2 on page 7

Make sure that the grounding is made correctly. See

Section 2.4 on page 8

Non weighing

structure (silo)

Weighing
structure

Load cell

U-bolt between

plate under cell

and weighing
structure (not

supplied)

04,6 – 16 mm²

earth cable

section (not

supplied)

08 – 50 mm²

earth cable

section (not

supplied)

Junction

box

Grounding
Strap

SCT

IMPORTANT

Содержание SCT-1100

Страница 1: ...SCT 1100 Advanced Series Weight Transmitter Technical Manual PN 185658 Rev A October 31 2017...

Страница 2: ...marks of their respective companies All information contained within this publication is to the best of our knowledge complete and accurate at the time of publication Rice Lake Weighing Systems reserv...

Страница 3: ...12 3 1 2 Standby 12 3 1 3 Power Off the Instrument 12 3 2 Basic Operation 12 3 2 1 Zero 12 3 2 2 Tare 12 3 3 Auto Power Off 14 3 4 Multi Range Function 15 3 5 Optional Date Time Adjustment 15 3 6 Opti...

Страница 4: ...5 1 Independent Channels 47 5 5 2 Dependent Channels 48 5 6 Gravity Setting 49 6 0 Communications 50 6 1 Serial Menu 50 6 2 Serial Outputs 54 6 2 1 COM1 Serial Port 54 6 2 2 COM2 Serial Port 55 6 3 Se...

Страница 5: ...serial ports In addition to having all the characteristics of a high precision indicator the SCT 1100 has the following features unit of measure conversion switching of net gross weight setpoint on th...

Страница 6: ...ath Electric shock hazard There are no user serviceable parts Refer to qualified service personnel for service The unit has no power switch to completely remove D C power from the unit disconnect the...

Страница 7: ...T 1100 Dimensions and Components Table 1 1 SCT 1100 Components The instrument can be installed on the wall or on the side of the electrical box on the DIN bar No Description 1 12 24 Vdc power supply i...

Страница 8: ...al port dedicated to the printer In setup enter into a parameter or to confirm a setting In numeric input confirms the entry made ON OFF Turns the instrument on and off In setup press multiple times t...

Страница 9: ...weight Set the minimum value of the analog output Set the analog output when the scale shows zero weight Set the maximum value of the analog output Set the key to be emulated by the input Set the out...

Страница 10: ...10 Press displays 11 Press or to scroll through decimal settings 12 Press when the desired decimal place setting is displayed displays 13 Press or to scroll through unit settings 14 Press when the de...

Страница 11: ...ed that load cell cables are shielded and run in conduit at an acceptable distance from power transmission lines to avoid signal interference and signal noise All cable not in conduit or otherwise shi...

Страница 12: ...he junction box When the load cells are directly connected to the instrument the shielding of the cell cables must be connected to the single point ground Use a cable having a 4 mm diameter if the sin...

Страница 13: ...sing 6 wire load cell The sense compensates for drops in voltage in the part of the cable connecting the instrument to the load cell This is useful when the distance between the instrument and the loa...

Страница 14: ...applicable on the output current is 350 and the minimum resistance applicable on the output voltage is 10 k Connector Pin Function J1 1 12 24 VDC 2 GND 3 COM 4 IN1 5 IN 2 6 RL1 7 RL2 8 COM Analog Out...

Страница 15: ...2 5 Input Output Wiring The maximum power of the outputs 48 Vac 0 15 A max or 60 Vdc 0 15 A max the maximum voltage applicable to the inputs is between 12 and 24 Vdc with current from minimum 5 mA to...

Страница 16: ...unction at start up can be disabled in the setup mode See in Table 4 8 on page 40 Momentarily press while the version number displays to view the following settings is the software release and is the...

Страница 17: ...in multiple ways Unload the scale and press or Press without unloading the scale Enter a manual tare equal to zero Locked or Unlocked Tare When a tare value is entered manually automatically or from s...

Страница 18: ...value is entered 8 Slowly press multiple times until displays Press to confirm and store to the instrument memory Press any other key to cancel and exit without saving Scale Capacity Function no remot...

Страница 19: ...ach entry must be confirmed by pressing 5 Slowly press multiple times until displays Press to confirm and store to the instrument memory Press any other key to cancel and exit without saving The param...

Страница 20: ...Printouts If the printer is on the secondary instrument The printer must be selected in both the primary instrument and the secondary instrument in the parameter See Section 4 2 on page 32 Press the...

Страница 21: ...ory Press any other key to cancel and exit without saving 3 8 Display Configuration Data The function makes it possible to view the metric data and other configuration data such as First range capacit...

Страница 22: ...urrently selected channel displays first followed by displays 2 Press or to select the channel to be displayed 3 Press to confirm 3 10 Selecting the Operating Mode In addition to the standard weighing...

Страница 23: ...t Press to toggle between net weight and gross weight Long press to enter the setpoint input menu See Section 4 3 on page 41 3 10 3 Input Output Weighing Through operator confirmation the instrument a...

Страница 24: ...e to view or print the weight of each individual scale or the sum of the weight detected by the single scales primary instruments repeat all the keys pressed on the secondary instrument A network can...

Страница 25: ...displays 12 Press Set the parameters for the primary instruments set the decimals of the secondary instrument s visualized weight set the unit of measure of the secondary instrument s visualized weigh...

Страница 26: ...rument is powered on it automatically places itself on the first powered on primary instrument with the lowest RS 485 address If all the instruments are off or if the radio signal does not reach the s...

Страница 27: ...as a rewriting number equal to the current one of the alibi memory and a weighing number equal or less than the last value received with the PID command It has a rewriting number greater than or equal...

Страница 28: ...individual weigh record Serial Commands in Alibi Memory Mode In addition to the serial commands described in Section 6 4 on page 57 the following serial commands are available in the alibi memory mod...

Страница 29: ...YY is 2 spaces if a null tare or semiautomatic tare or PT if a manual tare TTTTTTTTTT is the tare on 10 digits Alibi Memory Cancellation Command II ALDL CR o CRLF In which II is the RS 485 address on...

Страница 30: ...again to release the weight value 3 Press and hold to enter the setpoint input menu See Section 4 3 on page 41 Exit the hold mode to toggle from one scale to another when multiple scales are connected...

Страница 31: ...ically printed and reset Press to select the digit to be modified and or to increase or decrease the digit Press to confirm A setting of 0 disables the function Operation 1 Load the weight on the scal...

Страница 32: ...er except with each press of the indicated weight is totalized and automatically tared It is used for example in filling a container with multiple products At the end of totalization functions press t...

Страница 33: ...the scale displays The APW remains stored until the instrument is turned off allowing for the counting of similar pieces without having to repeat the REFERENCE operation Pressing toggles the display b...

Страница 34: ...from the PC serial line or directly on the instrument s display In this mode the zero tracking and the scale keys and are disabled It is not possible to set functioning modes and the alibi mode is set...

Страница 35: ...e digit to be modified Scroll through the parameters In numeric input increases the digit to be modified Quickly position at the first step of a menu In numeric input selects the digit to be modified...

Страница 36: ...6 U 6 9 U W UR LQ6W 6 QR 6 W U R XQ R GL6 E GL6 E Q E XWR U 3 LU RQ LUQR LU LU LQW LQW LQW LQW LQW LQW QX06 LVWHQ QR 6 3URWR QRU0 W QG W N E NE G W NE G NU NE G NE 3 NE U6 UR GL6 E Q E GH X LQL LQ3XW...

Страница 37: ...erating modes see Section 3 10 on page 18 Once the functioning mode is selected if a printer is configured the printout is automatically enabled This parameter is not displayed if trAnSM is set in the...

Страница 38: ...e function of printout and the instrument functions The re enable function can be set in the follow ing modes passage of the net weight by zero weight instability or always See Section 3 7 2 on page 1...

Страница 39: ...if the alibi functioning mode is selected Sets the tare function limitations See Table 3 1 on page 14 displays if limitation is enabled remote display disabled remote display enabled NOTE The paramet...

Страница 40: ...decimal The output is disabled once the set time has passed starting from the moment of the activation see the following parameter By setting the output remains always active NOTE The delay time is c...

Страница 41: ...condary mode Sets the analog operating mode If the instrument is a primary analog output disabled analog output on the gross weight analog output on the net weight If the instrument is a secondary ana...

Страница 42: ...ber of the channel over capacity If more than one channel is over capacity displays in which is the number of the channel with the lowest index Press to display the A D converter points relative to th...

Страница 43: ...desired radio channel displays if the configuration is successful displays if not successful Executes a RS 485 network scan on the set number of scales skipping its own address Press or to stop the au...

Страница 44: ...centage of the capacity of the auto zero must be set Zero capacity This menu allows to set 0 to 50 of capacity that can be zeroed by pressing Entering 0 disables the key Zero tracking This menu allows...

Страница 45: ...ition direct or with weight stability active hysteresis enabling and disabling setpoints or single setpoint the sign of the configured setpoint for setpoint on net weight and setpoint on pieces the ou...

Страница 46: ...Press to confirm and store to the instrument memory Press any other key to cancel and exit without saving The configuration of setpoints cannot be accessed if all outputs are set in the functioning m...

Страница 47: ...2 Instability Function of outputs on an unstable weight is enabled NOTE This type of output is possible in the mode with protocol Funct on page 33 or in the mode with the set to or CoM PC on page 52 P...

Страница 48: ...channels 8 Press to confirm displays 9 Press or until displays 10 Press displays 11 Press and then press or to set the decimal 12 Press to confirm displays 13 Press and then press or to set the weigh...

Страница 49: ...libration weight 1 Press to turn the instrument on and press while the firmware version displays displays 2 Press or until displays 3 Press and then press or to set the number of channels 4 Press to c...

Страница 50: ...de with linearization points 1 Press to turn the instrument on and press while the firmware version displays displays 2 Press or until displays 3 Press displays 4 Press and then press or to set the ch...

Страница 51: ...Press to select the digit to be modified and or to decrease or increase the digit to set the total capacity of the scale or the first range in case of multi range functioning 19 Press to confirm disp...

Страница 52: ...ss to select the digit to be modified and or to decrease or increase the digit to set the total capacity of the scale or the first range in case of multi range functioning 19 Press to confirm displays...

Страница 53: ...cceleration value for the ZONE OF USER 13 Press until displays Press to confirm and return to the weigh mode Press any other key to cancel and exit without saving The weight error caused by a differen...

Страница 54: ...E XG RQG U 3 U 3 3ULQ 6W 3ULQ 0RGEX6 0 6WG W 6W E 6W 6W E U 3 3U U 3 G U 3 LQ ELW 3U 0RG E XG 3U LW 3U 3U QR W3U 3 3 6WG W 3U3 6W 3U3 3U3 U 3 U 3 3 U 3UQ 3 U W W R QR W6 W6 W6K 0X W6 3U RQ 3UQ W6 Q Q...

Страница 55: ...g by pressing weight must be stable NOTE if the horizontal or vertical totalizer mode is active the transmission is carried out by pressing Standard and extended string transmission is confirmed by on...

Страница 56: ...tion of the weight for example only the tare weight by setting different parameters this parameter displays only if is selected in the secondary mode Transmission protocol that allows management of th...

Страница 57: ...ability zero and over under load management The string position that indicates if the weight is net The string position that indicates if the weight is positive or negative The string position that in...

Страница 58: ...lly near 50pF m and this increases when speed is increased i e the maximum distance can t be covered with the maximum possible speed RS 485 Serial Address In the functioning mode it is possible to ena...

Страница 59: ...on speed may be selected in the setup as 1200 2400 4800 9600 19200 38400 57600 115200 baud 6 3 Serial Port Transmission Modes 6 3 1 PC Port Selection It s possible to select the serial port to be used...

Страница 60: ...ation Baud rate at 9600 up to 10 transmissions per second are possible Baud rate at 115200 up to 16 transmissions per second are possible for the PC port and up to 12 for the printer port The transmis...

Страница 61: ...xtended string or multi scale string in the mode See Section 6 5 on page 63 for a description of the strings NOTE The data transmission frequency increases or decreases depending on the frequency of t...

Страница 62: ...ndependent channels or in the mode scale with dependent channels and digitally equalized the weight value is read relative to the active channel to read the values of the other channels if configured...

Страница 63: ...Reading Command of Converter Points Relative to the Weight CC RAZF CR LF Instrument response in mode standard string Section 6 5 1 on page 63 Response of the instrument in and mode multi scale string...

Страница 64: ...e command interrupts the possible visualization enabled using a previous DISP command restoring the visualization of the weight data If the display shown in the command is numeric for example the stan...

Страница 65: ...of the instrument the possible values are Instrument response CC OK CR LF accepted command In the event the simulated key has two linked functions key momentarily pressed or pressed at length if the K...

Страница 66: ...if the following weight value indicates disabling of the outputs OFF t O if the following weight value indicates the enabling of the outputs ON xxxxxx and yyyyyy take on the setpoint value of disablin...

Страница 67: ...not transmitted in the TRANSM mode OL Overload not transmitted in the TRANSM mode ST Stability of the display US Instability of the display Comma character kk NT Net weight GS Gross weight GX Gross we...

Страница 68: ...mma character TTTTTTTTTT Tare weight on 10 characters including possible sign and decimal point Comma character PPPPPPPPPP Number of pieces on 10 characters equal to 0 if the instrument is in a functi...

Страница 69: ...Through the MVOL and RAZF commands the instrument transmits the relative value on 10 digits instead of 8 Comma character uu Unit of measure kg bg bt lb mv microvolts vv converter points b signifies b...

Страница 70: ...Configuration This section describes how to set the remote scale string parameters Take the string REXT CR 1 ST _____6 000 PT_____0 000 _________0 kg CR LF Where CR ASCII 013 LF ASCII 010 1 Insert eve...

Страница 71: ...per loop and no acknowledge message will be received When the number of scales is defined in the Master the rEPE dC command will return scale values for each as well as the sum for all connected scal...

Страница 72: ...es the string 3 Select the start of the string and press displays 4 Select the first and the last characters of the weight 5 Escape from the setup and save the configurations Return to the weigh mode...

Страница 73: ...ay Use the following steps to connect the SCT 1100 to a remote display 1 Turn on the instrument and press while the firmware version displays displays 2 Press or until displays 3 Press displays 4 Pres...

Страница 74: ...isplayed in primary mode analog output disabled analog output on gross weight analog output on net weight Parameters displayed in secondary mode analog output disabled analog output enabled Once the f...

Страница 75: ...press 6 Select the desired printer and then press 7 Configure and baud rate number of transmission bits Set the analog output value when the scale displays zero weight supplied when the scale is in un...

Страница 76: ...gured press until the instrument displays Press to confirm and store to the instrument memory Press any other key to cancel and exit without saving Figure 6 5 Print Programming Menu Note C SU RQI W U0...

Страница 77: ...the number of weighs only in the partial total prints the number of weighs in the totalizations as well as in the partial total NOTE This parameter displays only if the totalizer mode has been selecte...

Страница 78: ...ge end prints the end page when the primary instruments prints are executed prints the end page when the sum is printed end page is always printed Primary mode does not print the page end prints the e...

Страница 79: ...ct the print fields in the bar code gross weight net weight tare weight Print the numeric field of the bar code the numeric field is not printed under the bar code above the bar code both above as wel...

Страница 80: ...nter a three digit value expressed in mm default 080 Select the font for character 1 associated data default Select the font for character 2 associated data default For each character type one of the...

Страница 81: ...er the bar code Print test By pressing a label with the previously selected fields but with fixed weight values is printed The print test depends on the selected functioning mode mode the first time t...

Страница 82: ...rst time the fields without the message are printed the second time the fields with the message are printed and so on mode the first time the fields without the message are printed the second time the...

Страница 83: ...e the save process is complete Do not press buttons on the labeler or the instrument while the green LED is blinking The label format is now saved to the labeler and is ready to print The data remains...

Страница 84: ...because the weight is unstable In the counting mode sampling has not been completed because a higher reference quantity should be used Communication problems with the date time of the instrument check...

Страница 85: ...c auto select Tare Function Entire capacity can be subtracted Auto Switch Off Programmable form 1 to 255 minutes Communication Digital inputs Outputs 2 inputs opto isolated 12 24 VDC 2 outputs 150 mA...

Страница 86: ...82 SCT 1100 Weight Transmitter...

Страница 87: ......

Страница 88: ...nada Mexico 800 321 6703 International 715 234 9171 Europe 31 0 26 472 1319 Rice Lake Weighing Systems is an ISO 9001 registered company Rice Lake Weighing Systems Speci cations subject to change with...

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