Manual OJ436 from version 6.5

Manual OJ436 from version 6.5
User’s Manual
Belt Scale OJ436
OJ:s Vågsystem AB
+46 247 13657, +46 70 6756677 / 6856677
Fax. +46 247 145 96
e-mail: oj.s@vagsystem.se
www.vagsystem.se
FRONT PANEL OPERATION.
The belt weigher has three different:
passwords to access
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PASS 001: Calibrations
PASS 002: Configuration
PASS 003: Maintenance
To gain access to either data area from the working display operate the SELECT key twice
until the indicator shows PASS. Press ENTER, then use the  and  keys to show the
appropriate password number; then operate ENTER to show the first parameter in the area
accessed. Use SELECT to index through the parameters.
Data entry:
Having selected the parameter you wish to adjust operate ENTER at which point the first
digit flashes on/ off.
Use the   and  keys to modify the digits until the required setting is obtained.
Operate ENTER again to steady the value.
To exit a data area operate ENTER at the last parameter in every password – EXIT.
TARE OF THE BELT WEIGHER.
To perform a dynamic tare without entering the password, operate the CLEAR and SELECT
keys (CLEAR first) for 3 seconds. Note that the belt must run empty!!!
DEAD RANGE is lit when the flow rate is less than the DEAD RANGE setting.
The internal dynamic zero is adjusted every 30 seconds by 0.01% of the Loadcell Capacity
(LC) during periods within dead range with the belt running empty.

An  symbol is displayed when the tacho signal is lost i.e. belt stopped.
READING OF THE RESETTAABLE TOTAL AND FLOW TIME:
Operate TOTAL and the current value is shown in the display, press CLEAR to reset.
Operate TOTAL twice to read the actual flow time, press CLEAR to reset.
The non-resettable total:
Operate SELECT to read the total.
Operate FLOW to return to flow rate.
This total is resettable within PASS 003 with ENTER - CLEAR - ENTER key sequence.
CALIBRATION.
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The flow rate display and the rate of totalisation are determined by the Calibration Factor,
parameter CF in password 001. The calibration may be checked and if necessary
automatically adjusted i.e. the weigher is re-calibrated as follows:
-Enter the parameter DC, Dynamic Calibration, in password 001.
-Operate CLEAR.
-Pass known weight over weigher (or quantity of material that can be subsequently weighed).
-Operate CLEAR to stop the totalisation process.
-Check that the totalised reading corresponds to the known test weight. Otherwise operate
ENTER and modify the readout to the test weight value and operate ENTER to complete
the calibration.
You can also execute the calibration as follows:
-Check the parameter TT, you will find it in password 003, operate CLEAR to reset.
-Pass known weight over weigher (or quantity of material that can be subsequently weighed).
-Check the totalised reading in password 003, use the calculation below to determine the
divergence:
Weigher minus Test weight x 100
Test weight
= Divergence in %
e.g.
12 300kg - 12 600kg x 100
12 600kg
= - 2,38%
If the weigher needs to be re-calibrated, the Calibration Factor must be directly adjusted in
the parameter CF.
Enter the parameter CF and adjust the current value with the same percentage as the
divergence. How? See page 1, Data Entry.
e.g.
CF = 40.00 - 2,38% = 39.05
If you only need to calculate a new calibration factor, use this simple formula:
DISPLAYED TOTAL / ACTUAL TOTAL x CF = NEW CF
MAINTENANCE.
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Password 003, this section provides a facility for monitoring the input signals for the loadcell
and tachometer.
T:
Non-resettable total, which may be reset with Enter - Clear - Enter key sequence.
HZ:
Tacho speed, multiply by 0,0236 to read the beltspeed in m/ s.
e.g. 76 x 0,0236 = 1,8 m/s.
ADC:
Analog to Digital Convertor output 0-65,535 divided by 4. This is the weight
input signal before any tare or calibration have been made i.e. the raw weight
reading.
LCS:
Load Cell Signal, the weight input signal displayed in Kg before any tare or
calibration adjustments have been made. It is the gross weight applied to the
loadcell within the range defined by the LC setting.
These values should be written down in the list of specifications after start-up of the belt
weigher, should any malfunction occur at some time, check the current values and compare
with those written down.
The following maintenance data data is also accessable in this area:
T:
Non-resettable total, may be reset operating ENTER, CLEAR and ENTER again.
PC:
Pulse Counter, tacho pulse counter facility. Operate CLEAR key to start the
counter. Operate ENTER key to stop.
WT:
Weight input signal, shows the weight input signal in Kg with the tare weight
removed, i.e. LCS – Internal Dynamic Zero.
T:
Total in 3 decimal place - Kgs
TT:
Test Total, a totaliser that can be used for test weighing purposes. Always
displayed to a 1kg resolution. Operate CLEAR to reset.
RT:
Belt Running Time, indicates the lenght of time, in hours, thet the belt has been
running since the timer was last reset. Operate CLEAR to reset.
OVERVIEW OF THE PARAMETERS.
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PASS 001
TS
FL
DR
TP
DT
CP
DC
CF
CC
PSET
EXIT
= Tacho Simulator, set to 0 with external tachometer.
= Flow, used to determine at what level DR parameter below should be set.
= Dead Range, specifies the minimum flow rate below which readings are ignored.
= Tare Pulses.
= Dynamic Tare.
= Calibration Pulses.
= Dynamic Calibration.
= Calibration Factor.
= Calibration Counter.
= Password Set, determines the password code for access to this section (001).
= Exit, allows the user to return to normal display mode upon operation of ENTER.
PASS 002
MO = Model Version, with affix – : basic, A : Analogue.
LC
= Load Cell Capacity.
WF = Weigher Filter.
SF
= Speed Filter
PG
= Pre-Gain, (7).
BRL = Belt Running Level, set to eliminate spurious pulses when belt is stopped.
IN
= Increment (Display).
UP
= Update Rate (mS, Display).
FDP = Flow Rate Decimal Place.
RTDP = Resettable Total Decimal Place.
NTDP = Non-Resettable Total Decimal Place
SDP = Static Decimal Place i.e. LC, OP, WT and DT (when idle).
TONS Yes = tonnes, No = kg.
OP
= Output Pulse.
T1
= Trip, determines the flow level at which the T1 relay output switches to on.
T2
= If zero, healthy signal. Or else the same function as T1.
TL
= Flow Time Level. Zero setting is used to select the DR as flow level.
D2
= Digital Input 2 Operation
BR
= Baud Rate
CS
= Communication Standard (determines the serial link i.e. RS485/422 or RS232)
ADDR= Address, sets the units address code number
SM = Serial Mode (SABUS/TRANS/REP/ModbusASCII/ModbusRTU).
*SP = Span, maximum flow reading.
*Analogue Parameters, only when PR436 = A.
*AZ = Analogue Zero.
*AR = Analogue Range.
PSET = Password Set, determines the password code for access to this section (002).
EXIT = Exit, allows the user to return to normal display mode upon operation of ENTER
Password 003
T
HZ
PC
ADC
LCS
WT
T
TT
RT
PSET
EXIT
= Non-Resettable Total, which may be reset with Enter - Clear - Enter key sequence.
= Tacho Speed.
= Pulse Counter, tacho pulse counter facility.
= Analogue to Digital Convertor.
= Load Cell Signal.
= Weight input signal in kg with tare weight removed.
= Total to 3 decimal places, only if unit set to display Tonnes.
= Test Total Kgs, for test weighing, reset with Clear.
= Belt Running Time in hrs, accumulates whenever tachosignal is live. Clear = reset.
= Password Set, determines the password code for access to this section (003).
= Exit, allows the user to return to normal display mode upon operation of ENTER
WIRING DIAGRAM.
OJ436:
Colour:
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Connectionbox: Colour: 10-p connector:
+VE Red
1
Red
1
+SE
Grey
2
Grey
8
+IN
Green
3
Green
2
Loadcell
-IN
Yellow
4
Yellow
3
-SE
Pink
5
Pink
10
-VE
Blue
6
Blue
4
+V
Brown/ white
+V
Brown/ white 5
SG
Black
SG
Black
6
0V
Violet
0V
Violet
7
D1
Digital Input (Print report)
D2
Digital Input (Remote tare/clear total)
T1
Trip Output
T2
Healthy Signal or Trip
T3
Pulse Output
1
Blue
Green
T4
Belt Stopped Output
2
Green
Blue
3
White
Red
A1+
Analogue output
4
Red
White
5
Grey
Brown
6
Black
Black
Tacho
Loadcell/ box:
Colour: 1250:
G-
+R
-T
Serial Link
GD
E
N
85-264ac
L
+
Tacho/ box:
Colour:
+V
Brown
SG
Black
0V
Blue
10-36dc
-
9 = Shield
EQUIPMENT FAULTS.
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Out of Range
This condition occurs if the load cell input signal is outside the full scale input range as defined by the amplifier
pre-gain (parameter PG), or if the tacho input is above 500Hz.
Display shows ‘ADC-SAT+’
Indicates that the input is outside the range in the positive direction.
Display shows ‘ADC-SAT-’
Indicates that the input is outside the range in the negative direction.
Display shows ‘OV SPEED’
Indicates that the tacho input is outside the 500Hz range.
Failures
Although unlikely, the following types of equipment failure are possible. In all cases the unit may be returned to
us for repair.
No response
No indication or response of any kind. Possibly a supply circuit failure. A soldered-in PCB (Printed Circuit
Board) fuse may need replacing as a result. Alternatively the fuse failure could be the only failure.
Display shows ‘REGFAULT’
This occurs if the load cell supply is overloaded due to wiring or load cell faults, or if the internal 10V supply
regular has failed.
Display shows ‘SENSE ER’
This occurs if the sense voltage (between the +SE and the -SE load cell terminals) has varied by more than 0.3V
with respect to the internal value which was stored at the last Tare operation.
Display shows ‘ERR nnnn’ where nnnn Fault Code Number
This indicates that a microprocessor fault has occurred. It may help to report the Fault Code Number to us when
returning the unit for repair.
Lost Pass Numbers: Restore Factory Settings
In the event of the passwords being lost the original factory default setting of 1, 2 and 3 can be reloaded by
holding down the SELECT and ENTER keys for approximately 30 seconds (operate ENTER key first). After
this time the display changes to read PASS. The password number will the have been restored to 1, 2 and 3.
TEST WEIGHING FOR OJ436
CUSTOMER:
POSITION:
WEIGHER:
LOCATION:
NOTES:
(belt weigher - reference scale) x 100
Diff % =
reference scale
Test No.
CF
OJ436 Kg
Reference Kg
Diff. Kg
Diff. %
Reference scale used:
Date:
Completed by:
1
2
If the belt weigher registers less
weight than the reference scale,
decrease the CF with the diff. %
3
4
5
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