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Skov Silo Weighing Module Technical User Guide

  • Hello, I'm your chat assistant. I have reviewed the Technical User Guide for the Silo Weighing Module 1M and 200M. This document provides all technical details and recommendations required for installing, connecting, setting up and calibrating these modules. I am here to assist you with any questions regarding this device.
  • What is the purpose of the silo-weighing module?
    How many load cells can be connected to a single terminal input?
    What is the importance of the CAN termination jumpers?
    Who should carry out the installation of the silo-weighing module?
2019.05.22 • 603910
Silo Weighing Module
Technical User Guide
Technical User Guide 3
Silo Weighing Module
Product and Documentation Changes
This product was released in May 2005.
We reserve the right to change this manual and the product described herein without further notice. In case of
doubt, please contact us.
Date of change appears from the front- and back page.
We recommend that ventilation systems should be mounted, operated and serviced only
by trained staff and that a separate emergency opening unit and an alarm system be
installed as well as maintained and tested at regular intervals, according to our terms and
conditions of sale and delivery.
The installation, service and troubleshooting in connection with electrical equipment must
be carried out by specialists in accordance with applicable national rules - in Europe in
accordance with EN 60204-1 and other applicable EU rules.
The installation of a supply isolator is required for each motor and power supply, so
maintenance of electrical equipment can be carried out in a dead environment. Supply
isolator is not supplied by us.
Note
• All rights reserved. No part of this manual may be reproduced in any manner whatsoever without the express
written permission of us in each case.
• We have made reasonable efforts to ensure the accuracy of the information contained in this manual. Should
any mistakes or imprecise information occur in spite of this, we would appreciate being notified thereof.
• Irrespective of the above, we shall not have any liability with respect to loss or damage caused or alleged to
be caused by reliance on any information contained herein.
• Copyright 2005 by the company.
4 Technical User Guide
Silo Weighing Module
1 Product Description..................................................................................................5
2 Mounting and Installation Guide .............................................................................5
2.1 Silo-weighing module with two terminal inputs and max. 1 metre CAN cable ............... 6
2.2 Silo-weighing module with two terminal inputs and max. 200 metres CAN cable ......... 7
3 Settings ......................................................................................................................8
3.1 CAN Addresses ..................................................................................................................... 8
3.2 CAN Termination Jumpers (max. 1 meter) ......................................................................... 9
3.3 CAN Termination Jumpers (max. 200 meters) ................................................................. 10
4 Calibration ............................................................................................................... 10
4.1 Error during Calibration ..................................................................................................... 13
5 Technical Data ........................................................................................................ 14
Technical User Guide 5
Silo Weighing Module
1 Product Description
This manual concerns installation of a silo-weighing module in a climate and production computer and is
primarily aimed at electricians who are to mount, install and calibrate the weighing module.
A certified electrician must carry out the installation in accordance with applicable national rules and in Europe
in accordance with applicable EU rules.
At silo weighing, a load cell records the weight of the silo content and transmits it to the silo-weighing module.
The module transforms the weight into a value (0-10V) which the climate and production computer can use.
The module is available with two and four input terminals. Up to eight load cells can be connected to each
terminal input, e.g. WB1600 or WB6000.
2 Mounting and Installation Guide
The way of connecting the silo-weighing module depends on the distance between the silo and the climate and
production computer. Select the wiring diagram corresponding to the actual distance (more or less than 30m).
Connection of load cells
WB 1600
WB 6000
SB-A 3T/5T
SB-A 10T
Silo weighing
module
White
White
Red
Red+ Blue
O1+
Blue
Blue
Green
Green
I1+
Brown
Brown
White
White
I1-
Black
Black
Black
Black+Yellow
O1-
Shield(Cable)
Shield(Cable)
Shield(Cable)
Shield(Cable)
GND
6 Technical User Guide
Silo Weighing Module
2.1 Silo-weighing module with two terminal inputs and max. 1
metre CAN cable
1) Check that the silo is placed max. 30m from the climate – and production computer.
2) Mount a small watertight junction box next to the silo so that all load cell cables can reach it. (The
junction box is not included in the delivery).
3) Mount the silo weighing module next to the climate computer.
4) Connect the silo load cell cables in parallel in the junction box.
5) Connect the load cell cable shields mutually in the junction box with short connections (max. 20mm).
6) Connect the junction box with the silo weighing module with max. 30m shielded four-wire load cell
cable.
7) Attach the silo weighing module by means of max. 1m four-wire shielded cable to the four-poled
terminal strip on the I/O-module in the climate - and production computer.
8) Connect the cable shield under the toggle in the weighing module.
I/O Modul
Technical User Guide 7
Silo Weighing Module
2.2 Silo-weighing module with two terminal inputs and max. 200
metres CAN cable
1) Check that the silo is placed more than 30m from the climate and production computer.
2) Mount a small watertight junction box or the silo weighing module next to the silo so that all load cell
cables can reach it. (The junction box is not included in the delivery).
3) Mount the silo weighing module max. 30m from the junction box. The silo weighing module can be
mounted outdoor.
4) Connect the silo load cell cables in parallel in the junction box.
5) Connect the load cell cable shields mutually in the junction box with short connections (max. 20mm).
6) Connect the junction box with the silo weighing module with max. 30m shielded four-wire load cell
cable.
7) Mount the manufacturer-supplied data network module on the main module. Fasten the screw firmly
and connect the flat cable.
8) Attach the silo weighing module by means of max. 200m two-wire twisted pair with double shield
(Cat. 5 cable twisted pair) to the data network module in the climate computer. Always use two wires
from the same twisted pair to CAN HI and LO. Do not use two wires from different pairs).
9) Connect the cable shield under the toggle in the weighing module and on the data network module.
10) Connect 230/240 V mains voltage to the power module in the silo weighing module.
Data network
module
8 Technical User Guide
Silo Weighing Module
3 Settings
3.1 CAN Addresses
The module must have a certain CAN address so that the computer can communicate with it. The address of the
individual module corresponds to the number of the module.
In the menu Technical / Setup / Installation / I/O modules / Silo Weighing boxes
Set the weighing modules two address switches
(Rotary Switch) X1 (and X10*) as follows:
Module 1 Type 5 W X1 Address = 1
Module 2 Type 5 W X1 Address = 2
*The address switch X10 on the weighing module is not to be changed, as it is only used when there are more
than 10 weighing modules.
0
1
2
3
4
5
6
7
8
9
Weighing module 1
Weighing module 2
I/O module
Technical User Guide 9
Silo Weighing Module
3.2 CAN Termination Jumpers (max. 1 meter)
The modules are controlled by CAN-bus communication. To obtain a safe communication between the
modules, it is important that the CAN termination jumpers are set correctly.
1) Set the jumper ”ON/OFF CAN TERM” to OFF.
2) Set the jumper ”ON/OFF CAN TERM” to OFF.
3) Set the jumper ”ON/OFF Terminate” to ON.
Max. 1 meter
2 input weighing module
10 Technical User Guide
Silo Weighing Module
3.3 CAN Termination Jumpers (max. 200 meters)
The modules are controlled by CAN-bus communication. To obtain a safe communication between the
modules, it is important that the CAN termination jumpers are set correctly.
1) Set the jumper ”ON/OFF CAN TERM” to OFF
2) Set the jumper ”ON/OFF CAN TERM” to ON
3) Set the jumper ”ON/OFF TERMINATE” to ON (weigher module).
4) Set the jumper ”ON/OFF INT-TERM CAN” to OFF (datanet module RS485/CAN).
5) Set jumper ”ON/OFF EXT-TERM CAN” to ON (datanet module RS485/CAN)
4 Calibration
See the menu Technical / Calibration / Production / Silo / Silo
Enter the weight of the silo content at calibration.
(The more weight in the silo, the more precise the calibration will be.
Min. 100kg).
It is possible to make an offset to render the current indication from
the silo correct (the offset weight of the silo).
During calibration, the computer will generate an alarm for Missing I/O. This is normal and due to the fact that
the communication between the computer and the weighing module is disconnected
Max. 200 meters
2 input weighing module
Technical User Guide 11
Silo Weighing Module
The calibration value should only be changed in connection with calibration as a subsequent
change will have an influence on the silo content view.
Figure 1: Calibration of weighing module
Do the following to calibrate the weighing module
1) Make sure that the green PWR lamp emits light constantly (must not flash).
Yellow TX lamp and green RX lamp must flash right from the beginning.
2) Set switch #1 to ”S” (= setup) and #2, 3 and 4 to NORMAL.
3) Press the RESET button for 1 sec.
4) Wait 4 sec. until the red BUS lamp switches on* and emits light constantly
(must not flash).
12 Technical User Guide
Silo Weighing Module
Load cell input A
Load cell input B
5) Select the load cell input to be calibrated (only one at a time):
Silo#1: Set switch #3 to “A”
or
Silo#2: Set switch #4 to “B”
6) Make sure that the silo is empty (TARA).
7) Set switch #2 to “C” (= Calibration).
8) Wait until yellow TX lamp switches on *.
Red BUS lamp switches off.
9) Load the silo with a known test load
(the available weight at the time of the calibration).
10) Wait a few seconds until the weigher has settled at a cetain weight.
11) Return switch #2 to “NORMAL” position.
If the green RX lamp switches on, the calibration is accomplished OK*.
12) Return switch #1to NORMAL.
13) Return switch #2, 3 and 4 to NORMAL.
14) Remove the test weight from the silo (cf. item 9).
15) Press the RESET button.
This routine saves the TARE and TEST calibration values in the weighing module.
Technical User Guide 13
Silo Weighing Module
4.1 Error during Calibration
*) In case of an error, the RED+YELLOW+GREEN lamp will flash.
The calibration can fail
• if switch 1 or 2 is not set correctly.
• if the scale is defective or if there is no connection to the scale.
• if the value with the test load (calibration plumb) is too light.
The test load must be min. 1 per mille and max. 10 per cent of full load. Full load is 2 mV/V.
Example: If the load amplifier is e.g. connected to four load cells, which give 2 mV/V at 2000 kg, the
calibration plumb must weigh min. 8 kg and max. 800 kg.
• if errors occur when data are saved.
The error can be remedied by:
• Setting switch 1, 2, 3 and 4 to NORMAL.
• Pressing the RESET button.
• Repeating the calibration.
14 Technical User Guide
Silo Weighing Module
5 Technical Data
Electric
Mains voltage (nominal)
24V DC/AC
Mains voltage area
18V DC – 42V DC. 14V AC – 30V AC
Power consumption
0.125 mA
Max. power consumption
3 Watt
Analog I/O connection
Output
GND/ +5 V
Input
GND/ +15 V
Function
Accuracy
0,2 % FSD (0 to +50 °C (+32 to 122 °F))
Indicators
Relay panel PCB : Red LED: Power
Processor: Green LED: Power/runs*)
Red LED: Bus error
Yellow LED: Data transfer
Green LED Data reception
*) In case of a fatal error in the module, the green LED will flash.
The module ought to be replaced.
The indicators also indicate the status in connection with calibration
Environment
Ambient temperature, operation
0 to +50 °C (+32 to 122 °F)
Ambient temperature, storage
-25 to +70 °C (-13 to +158 °F)
Ambient humidity, operation
15-95 % RH
EMC standards
EN 50081-1/2; EN 50082-1; EN 61000-6-2; CISPR 22 class B
Protection class
IP65
Shipping
Silo weighing module 1M
Silo weighing module 200M
Dimension HxBxD:
192x164x87 mm
291x241x128 mm
Dimension packaged HxBxD:
310x230x100 mm
370x290x200 mm
Shipping weight
1 kg
3 kg
SKOV A/S • Hedelund 4 • Glyngøre • DK-7870 Roslev
Tel. +45 72 17 55 55 • Fax +45 72 17 59 59 • www.skov.com • E-mail: [email protected]
2019.05.22 • 14.05 • EN • Made in Denmark
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