HBM WE2107 User manual

A2087-1.3 en/de
Weighing indicator
Wägeindikator
WE2107...
Quick Start Guide
Kurzanleitung

English Page 3 - 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deutsch Seite 39 - 74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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WE2107
A2087-1.3 en/de HBM
Contents Page
English
Safety instructions 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Introduction and appropriate use 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Maintenance and cleaning 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Electrical connections 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Electrical installation notes 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Cable inlet gland 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Cable preparation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Load cell connection 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Process outputs 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6 Supply voltage 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7 Process inputs / analog output 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.8 RS232 interfaces WE2107 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.9 Serial interfaces RS232 and RS485 (2‐wire) WE2107M 12. . . . . . .
4 Displays and control functions 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 WE2107_Panel 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Parameter menu and display functions 15. . . . . . . . . . . . . . . . . . . . . . . .
5.1 Calling the parameter menu 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Menu functions can be disabled / enabled 15. . . . . . . . . . . . . . . . . . .
5.3 The main menu 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 Navigation in the parameter menu 16. . . . . . . . . . . . . . . . . . . . . . . . . .
5.4.1 Navigation in levels 1 and 2 16. . . . . . . . . . . . . . . . . . . . . . . . .
5.4.2 Basic scale function, menu access selection and
legal‐for‐trade operation 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4.3 Setting and adjusting the scale 20. . . . . . . . . . . . . . . . . . . . . . .
5.4.4 Restore the factory settings 22. . . . . . . . . . . . . . . . . . . . . . . . . .
5.4.5 Switch off the device 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Scale adjustment 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 Prerequisites for scale adjustment 24. . . . . . . . . . . . . . . . . . . . . . . . .
6.2 Partial load adjustment with the calibration weight (standard
method, CAP = CAL) 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3 Partial load adjustment with the calibration weight 25. . . . . . . . . . . .
6.4 Adjustment without a calibration weight (mV/V adjustment) 26. . . .
6.5 Multi‐range scale 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Setting the date and time 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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8 Error messages 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Mechanical dimensions and mounting information 32. . . . . . . . . . . . .
9.1 WE2107 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 WE2107M 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.3 Wall‐mounting, WE2107 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.4 Mounting on a stand, WE2107 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.5 Sealing / legal‐for‐trade capability 35. . . . . . . . . . . . . . . . . . . . . . . . . .
10 WE2107 - Complete menu structure 36. . . . . . . . . . . . . . . . . . . . . . . . . . .

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WE2107
A2087-1.3 en/de HBM
Safety instructions
The device must not be modified from the design or safety engineering point
of view except with our express agreement. Any modification shall exclude all
liability on our part for any damage resulting therefrom.
Repair is specifically forbidden. Repairs must only be carried out by HBM.
All the factory defaults are stored at the factory so that they are safe from
power failure and cannot be deleted or overwritten. They can be reset at any
time by using the command TDD0.
The transducer connection must always be assigned. It is essential for a
transducer or a bridge model to be connected up for operation.
When replacing the battery for the real‐time clock, the device must be discon
nected from the power supply.
The production number set at the factory must not be changed.
DThere are not normally any hazards associated with the product, provided
the notes and instructions for project planning, installation, appropriate
operation and maintenance are observed.
DIt is essential to comply with the safety and accident prevention regulations
specific to the particular application.
DInstallation and start‐up must only be carried out by suitably qualified per
sonnel.
DDo not allow damp and dirt to get inside the device when connecting
the cables.
DWhen connecting the cables, take action to prevent electrostatic discharge
as this may damage the electronics.
DThe required power supply for the device is an extra‐low voltage (12...30 V)
with safe disconnection from the mains.
DWhen connecting additional devices, comply with the safety requirements.
DDo not exceed maximum voltage levels when connecting external controls
to the process inputs and process outputs of the WE2107.
DThe ground connections of the supply, of the process inputs and process
outputs, of the interface and of the load cell cable shield, must be intercon
nected in the device. If the potentials of the devices to be connected are
different, suitable steps must be taken to isolate the signals (such as using
an optocoupler).

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A2087-1.3 en/deHBM
DShielded cables must be used for all connections apart from the supply
voltage (see note below). The shield must be connected extensively to
ground on both sides.
DThe use of unshielded cables for the voltage supply is only permissible for
cables with a maximum length of 30 m, laid inside buildings. If cables are
longer or are installed outside buildings, shielded cables must be used.
DTo compensate for potential differences, the metal housing of the
WE2107M must be connected to the scale structures as well as to the
ground potential of the connected devices by a low‐resistance equalizing
conductor. This is unnecessary if a potential difference of 35 V is not
exceeded.
DIn the device, the reference ground (GND) of all the signals and the supply
voltage is connected directly to the cable shield connection but not to the
housing.
DThe front foil is made from high‐quality materials, providing a service life
appropriate to the external conditions. The keys must only be operated by
hand; under no circumstances must pointed objects be used to press them.
1 Introduction and appropriate use
This Operating Manual contains detailed information both on operation and on
the setting options of the WE2107 weighing indicator.
The WE2107 is designed exclusively for use in industrial applications, for
example
DAs a component of a non‐automatic scale (NAWI1)
DAs a component of a non‐automatic counting scale (not legal‐for‐trade
applications)
DAs a component for a process control system with 4 limit value switches
DAs a component of a dosing/filling control system (filling, dosing, emptying)
DAs a component of an application for tank weighing (filling, dosing, empty
ing)
Use for any purpose other than the above is deemed to be non‐designated
use.
In the case of legal‐for‐trade use, national legal and safety regulations must
be complied with.
1) NAWI – non automatic weighing instrument

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WE2107
A2087-1.3 en/de HBM
2 Maintenance and cleaning
Before starting up the WE2107 / WE2107M, please insert the enclosed new
battery.
The WE2107 contains a battery (type: CR2032, lithium, not rechargeable), to
back up the integrated real‐time clock.
The battery will last for about 3 years at ambient temperatures of
-10 to +40 °C and must be replaced at each subsequent verification.
To replace the battery, proceed as follows:
DDisconnect the WE from the voltage supply
DOpen the housing
DRemove the old battery and dispose of it in an environmentally sound man
ner
DInsert the new battery (positive pole at the top)
DClose the device
DSetting the date and time
The WE2107 is maintenance‐free. Please note the following points when
cleaning the housing:
DBefore cleaning, disconnect the device from the power supply.
DClean the housing with a soft, slightly damp (not wet!) cloth. Under no cir
cumstances use cleaners that contain scouring agents or solvents, as
these can attack the front panel labeling and the display!

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3 Electrical connections
3.1 Electrical installation notes
In all the housing variants, the reference ground (GND) of all the signals and
the supply voltage is connected directly to the cable shield connection in the
device, but not to the housing.
The metal housing of the WE2107M is not connected to the reference ground.
To compensate for potential differences, the metal housing of the WE2107M
must be connected to the scale structures as well as to the ground potential of
the connected devices by a low‐resistance equalizing conductor. This is unne
cessary if a potential difference of 35 V is not exceeded.
Only high‐quality, flexible cables with a shield must be used to connect the
load cells. HBM recommends using these cables for all the WE2107 connec
tions. For a connection that meets EMC requirements
(EMC = electromagnetic compatibility), the cable shield contact of all the
cables to the device ground must be low‐resistance; the shield must be
stripped to about 5 mm and the cable must be secured with the strain relief
clamps.
To minimize EMC problems, the individual wires should be as short as pos
sible from the end of the shield to the terminal. Avoid making cross‐connec
tions, such as from the interface cable to a switching input, and instead use
separate cables in accordance with the terminal arrangement. A common
cable should be used for the supply and the switching inputs.
Electrical and magnetic fields often induce interference voltages in the meas
uring circuit. Use shielded, low‐capacitance measurement cables only (HBM
measurement cables meet these conditions). Do not route the measurement
cables parallel to power lines and control circuits. If this is not possible, pro
tect the measurement cable (with steel conduits, for example). Avoid stray
fields from transformers, motors and contact switches.
Please comply with the safety instructions at the start of this description.
The load cell and all the control and supply cables are connected by means of
screw terminals inside the housing. The terminals are fitted with wire protec
tion and the use of end sleeves is recommended, particularly for the load cell
cables.
Connection terminals are identified on the motherboard by a short text or
numbers.

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WE2107
A2087-1.3 en/de HBM
NOTE
All the ground connections are interconnected on the motherboard!
3.2 Cable inlet gland
Four PG glands are available at the back of the housing to provide sealed
cable entry. Round cables, between 5 and 7 mm in diameter, can be used.
The PG glands are used purely for sealing and strain relief. So the cable
shielding does not have to come into contact with the PG gland (as it does for
other HBM devices), but with the screw clamps in front of the connection ter
minals.
This also applies to versions with a steel housing (WE2107M) and is import
ant for device EMC properties.
To minimize EMC problems, the individual wires should be as short as pos
sible from the end of the shield to the terminal. So avoid making cross‐con
nections, such as from the interface cable to a switching input, and instead
use separate cables in accordance with the terminal arrangement. A common
cable should be used for the supply and the switching inputs.
3.3 Cable preparation
- Remove the outer sheath to about 20 mm.
- Shorten the braided shield to 5 mm and
fold it back.
- If necessary, remove the inner sheath.
- Strip the wire ends to about 5 mm.
- Run the cable through the PG gland.
- Push the cable under the terminal clamp and
screw it down, so that the folded over shield
area is firmly held.
- Connect the wires to the terminals.
Shielding
Figure 3.1: Steps for preparing the connection cable

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Ex + Bridge excitation voltage +
Ex - Bridge excitation voltage -
In + Signal +
In - Signal -
Se + Sense line +
Se - Sense line -
Out4 Process output 4
Out3 Process output 3
Out2 Process output 2
Out1 Process output 1
Uext Supply voltage Out 1...4
GND Ground, Out 1...4
GND Ground
UB Supply voltage WE
I - Current output, 4...20 mA
I + Current output, 4...20 mA
IN2 Process input 2
IN1 Process input 1
Rx1 COM1: RxD (RS232) or TRb (RS485)
Tx1 COM1: TxD (RS232) or TRa (RS485)
GND Ground
Rx2 COM2 (RS232): RxD or DTR
Tx2 COM2 (RS232): TxD
GND Ground
Load cell connection
Process outputs
Supply
Current output
Process inputs
COM1/2 interface
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Connection
Figure 3.2: Connection positions (open housing, rear view)
3.4 Load cell connection
Connection Board imprint Function
1Ex+ Bridge excitation voltage +
2Ex- Bridge excitation voltage –
3In+ Signal +
4In- Signal –
5Se+ Sense line +
6Se- Sense line -
Up to six load cells, each of 350 Ω(= 58 Ωloading) can be connected to the
WE2107. HBM provides type VKK... junction boxes for connecting cables and
for corner load adjustment for scales with several load cells.
The WE2107 is designed for a six‐wire load cell configuration. When connect
ing four‐wire load cells, use cable jumpers to connect terminals 1 with 5 and 2