Epoch WT-PP Bedienungsanleitung
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Weight Transmitter User manual
Contact us :
EPOCH INSTRUMENTS AND CONTROLS PVT LTD
No. 16, Bhadrappa Estate, 54, Magadi Main Road, Kamakshipalya,
Bangalore - 560 079.
Ph : 080-23481364
Email : sales@epochloadcell.com
Contacts us : email : sales@epochloadcell.com , Ph: 080-23481364
Indicator Front Panel View
Initial Inspection
WEIGHT TRANSMITTER USER MANUAL VERSION-1.3
The front panel of Weighing Transmitter appears similar to one shown below:
1 - LED Display
2 - MENU/ESC key - To enter into Menu from display(Password protected) & to back from menu options
and parameter entries without storing entered values
3 - ENTER/TARE key - To enter into Menu options & Sub menus & to store the parameters values
4 - LEFT key - To select or move to the next cursor position in parameter values entry & to display peak
weight value during the main display
5 - UP key - To select next option and to increase or decrease values & to reset the peak weight during
the main display
6 - Status LED's
7 - Negative indication
STATUS LED’s Description Status
-VE
To indicate the current weight is +ve
weight or –ve weight
ON -ve weight
OFF+ve weight
OPEN
To indicate the Load error(oPEn) (or)
To indicate the display weight is Peak
weight or Current weight
ON(continuous)Load Error
ON(one time)Peak weight
OFF Current weight
PWR To indicate the power is ON or not ON Power ON
OFF Power OFF
The rear panel of Weight Transmitter appears similar to one shown below:
Ensure the following while opening the carton box: a) Weight Transmitter – 1No b)
Connectors for
ports (RS485, load cell) – 2Nos c) Side clamps – 2Nos d) User Manual – 1No
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Technical Specification
Specification
Description
Indicator Power
Power Supply
24V DC Supply
Controller
High speed microcontroller
A/
D Converter
Type
24
-
bit Delta Sigma
Analogue Input Range
0.2mV to 25 mv
Linearity
<0.02% FS
Gain Drifting
2PPM/
◦C
Conversion Rate
12.5 SPS
Display Accuracy
1/30,000
Display & Keypads
LED Display
5 digits 7 Segment LED Display
Keypads
4 Keys, Menu/Esc Key, Enter Key, Up Key and Left Key.
Load cells
Excitation
5 V DC
Mechanical Data
Cabinet Size
129mm (
L)*48mm (H)*96mm (W)
Panel Cutout Details
45mm (H)*92mm (W)
Net Weight
200 gm
Environmental
Operating Temperature
-
10
◦C to 40◦C
Storage Temperature
-
25
◦C to 70◦C
Relative Humidity
90% R.H without dew
IP Level
Front panel IP 55
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Menu Flow Diagram
Menu can be accessed by using the MENU key by pressing the key continuously for 2 sec.
Calibration accesses through hardware lock protection. Please connect and short pin no. 2
and 3 in rear panel to enable calibration.
Two different Load calibrations available “AUTO” & “MANUAL”. Difference, in manual
calibration User need to enter Known weight count (without zero count) as span
count.
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LOAD CALIBRATION
Calibration accesses through hardware lock protection. Please short pin no. 7
and 8 in rear panel to enable calibration .
Accessing menus requires entering the default factory set valid 3-digit password i.e. ‘000’. It
is suggested that you change the password.
This menu will help you to calibrate load.To access load calibration menu.
S.No Instruction Display
1. Press MENU/ESCand enter the default factory
set password ‘000’ and press ENTER/TARE.
2. Navigate to “AUto” or “nAnUL” and press
ENTER/TARE.
Two different Load calibrations available
“AUTO” & “MANUAL”. Difference, in manual
calibration we have to enter the span count
(Known weight count).
3. Navigate to Maximum Capacity (n-CAP) and
press ENTER/TARE.
Enter the max capacity of load cell within the
range (0.01-999.99). E.g., ‘020.00’
4. Navigate to Decimal Point (d-Pt) and press
ENTER/TARE.
Set the decimal value with the possible values
of (0, 1, 2, 3).
You can enter the values by pressing “UP” or “SHIFT” keys.
Press ENTER/TARE key to store the current value.
Press MENU/ESC key to either return to previous menu or cancel the entered
values.
000
CALIb
n-CAP
020.00
d
-
Pt
2
AUto
NAnUL
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5. Navigate to Resolution (rSoL) and press
ENTER/TARE.
Set the resolution value with the possible
values (1, 2, 5, 10, 20, 50 and 100). E.g., ‘2’.
6. Navigate to Cal. Zero (CAL-0) and press
ENTER/TARE.
Remove any load on load cell. LED displays
ADC counts corresponding to the cal. Zero
value.
Press ENTER/TARE to set Cal. Zero.
When you calibrate Cal. Zero and Cal.
Span, wait for LED to display stable
raw ADC counts.
7.
Navigate to Cal. Span (LoAd) and press
ENTER/TARE.
AUTO
Place a reference weight on the load cell, the LED
displays ADC count corresponding to the weight.
E.g., ‘6081’.
MANUAL:
User need to enter Known weight count
(without zero count) as span count.
Press ENTER/TARE to set Cal. Span.
Cal. Span counts should be greater than
Cal. Zero + 50.
8. Navigate to load Capacity (L-CAP) and press
ENTER/TARE.
Enter the reference weight that is used while
calibrating Cal Span using up and left key. The
range should be (0.01 to Max Capacity). E.g.,
‘001.00’
System asks to take calibration backup
(ConF?). If you want take backup then press
ENTER/TARE otherwise press MENU/ESC
thencome out from menu.
rSoL
2
CAL
-
0
1617
LoAd
6017
L
-
CAP
001.00
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ANALOG SETUP
A
-
Lo
01092
This menu will help you to calibrate Analog output.To access Analog setup menu, navigate
to menu using up key and select A-Set and press ENTER/TARE.
S.No. Instruction Display
1. Navigate to Analog output check (A-CHC) and
press ENTER/TARE.
Here enter the weight value, and then it gives
the corresponding output.
2. Navigate to Analog High (A-HI) and press
ENTER/TARE.
The value which is going to send to DAC for
20mA has to be entered here.
Range is (0 to 6553).
3. Navigate to Analog Low (A-Lo) and press
ENTER/TARE.
The value which is going to sent to DAC for 0
mA (or) 4 mA has to be entered here.
If Analog selection is 0-20 (or) 0-10 then
The range is (0 to 6553).
If Analog selection is 4-20 (or) 2-10 then
The range is (0 to 6553).
A
-
CHC
000.00
A
-
HI
05491
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A
-
dEF
Lo
A
-
oFF
001.00
A
-
SPn
010.00
4. Navigate to Analog Default Value (A-dEF) and
press ENTER/TARE.
This provides safety to Analog Output during
error conditions. The user can select what
value of Analog Output should be during error
conditions.
The available modes are,
Low Value (4 mA / 0 mA) -> ‘Lo’.
High Value (above 20 mA i.e.,22.05 mA)
-> ‘HI9H’.
Value at Previous stage -> ‘LASt’.
5. Navigate to Analog Offset (A-oFF) and press
ENTER/TARE.
This provides the Analog Output starts range.
Here, user can set the positive or negative
offset.
Before entering into “A-oFF” press left key to
Select positive (“pos”) or negative (“nEg”)
analog offset. “nEg”means –ve LED will be On.
The available modes are,
If the offset is “pos” means then analog
output range starts from positive 001.00
kg to analog span value.
If the offset is “nEg” means then analog
output range starts from negative 001.00
kg to analog span value.
6. Navigate to Analog Span (A-Spn) and press
ENTER/TARE.
This provides the Analog Output end range.
Here, user can set the weight at which can get
the max analog output.
This menu is restricted to the max
capacity value under calibration.
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SETUP
Adc
-
f
1
N
-
aUg
10
PASS
000
AUt
-
0
5
t
-
Ed
Enb
To access General setup menu, navigate to menu ->SETUP and press ENTER/TARE.
S.No Instruction Display
1. Navigate to ADC Filter (adc-f) and press
ENTER/TARE.
User can enter the filter value here with range of
(1-9). It is used to reduce fluctuations due to
sudden load impacts.
2. Navigate to moving Average (m-avg) and press
ENTER/TARE.
User can enter the Moving average value here
with range of (1-100).
3. Navigate to Password (PASS) and press
ENTER/TARE.
Enter the password you want to use, using UP and
LEFT keys and press ENTER key to store &
activate it. This is three-digit password.
Default password is ‘000’.
4. Navigate to Auto zero (Aut-0) and press
ENTER/TARE.
The available Auto Zero value in engineering
count value is from 0 to 9.
If we enter 5, when weight is Zero, if the current
weight deviation from 0 value in either positive or
negative is less than or equal to (5 * Resolution),
then the system will take the Current weight value
as 0. The 0 value disables the Auto Zero. Auto
Zero Function is used to avoid drift error.
5. Navigate to Tare Enable/Disable (t-Ed) and press
ENTER/TARE.
This is to enable or disable the tare when normal
process.
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COMMUNICATION SETUP
d
-
Id
01
bAUd
9600
C
-
nod
n
-
bUS
OFFSE
00000
To access Serial communication setup menu, navigate to menu ->S-Conand press
ENTER/TARE.
S.No. Instruction Display
1. Navigate to Device ID (d-Id) and press ENTER/TARE.
Enter the Device ID (1-99). It is required to identify the
system, in case of multiple systems are deployed.
2. Navigate to Baud Rate (bAUd) and press
ENTER/TARE.
It is used to set the communication between unit and
host device. It is settable between 2400, 4800, 9600,
19200, 38400, 57600, 115200bps.
3. Navigate to Communication mode (C-nod) and press
ENTER/TARE.
Available modes are,
o Request mode
o Dump mode
o ModBusRTU mode
o ModBus ASCII mode
Refer Serial Communication protocol section.
4. Navigate to OFFSET(OFFSE) and press
ENTER/TARE.
User can enter the OFFSET value here with range of
(00000-49999).
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