HBM MGA II User manual

B0599-3.7 en
Amplifier System
MGA II
with Digital Display
DA12
Operating Manual

HBM

3
MGA II
Contents
Safety instructions 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A Introduction A−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Notes on documentation A−2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 MGA II housings A−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Structure of the MGA II device A−7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Control elements for the digital indicator A−9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Control elements for the amplifier plug−in units A−10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Component location diagrams, connection boards A−11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Component location diagrams ME10, ME30, ME50, ME50S6 A−14. . . . . . . . . . . . . . . . . .
4 Conditions on site A−15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Maintenance and cleaning A−16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B Connections B−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Mains connection B−2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Shielding design B−3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Connecting transducers B−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Connect strain−gage full bridge B−5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Connect inductive half bridge B−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Intrinsically safe transducer port B−7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.1 Electrical connection to AP05 B−8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Outputs and remotes B−10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Connection boards AP01, AP03, AP05, AP11 B−10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Synchronisation (ME30 and ME50 only) B−12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C Commissioning C−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Commissioning C−2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Devices in the desktop housing and module frame C−3. . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Switching on C−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4
MGA II
D Balancing/Range D−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Balancing D−2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Excitation voltage D−2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Zero balancing D−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Setting a range D−5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Calibrating the measuring chain D−9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Zero operating mode D−11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Measurement frequency range /Cut−off frequency D−12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E Index E−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5
MGA II
Safety instructions
Use in accordance with the regulations
The amplifier system is to be used exclusively for measurement tasks and directly related
control tasks. Use for any purpose other than the above shall be deemed to be not in accor-
dance with the regulations.
To ensure safe operation, the device may only be operated in accordance with the informa-
tion given in the User Manual. It is also essential to comply with the legal and safety require-
ments for the application concerned during use. The same applies to the use of accessories.
General dangers of failing to follow the safety instructions
The amplifier system is a state−of−the−art device and is safe to operate. The device may
give rise to further dangers if it is inappropriately installed and operated by untrained person-
nel.
Any person instructed to carry out installation, commissioning, maintenance or repair of the
device must have read and understood the User Manual and in particular the technical
safety instructions.
Residual dangers
The scope of supply and list of components provided with the amplifier system cover only
part of the scope of measurement technology. In addition, equipment planners, installers and
operators should plan, implement and respond to the safety engineering considerations of
measurement technology in such a way as to minimise residual dangers. Prevailing regula-
tions must be complied with at all times. There must be reference to the residual dangers
connected with measurement technology.
After setting up and password protected activities, care must be taken to ensure that any
control units that may be connected remain in a safe and secure state until the switching
behaviour of the amplifier system has been checked.

6
MGA II
Warnzeichen und Gefahrensymbole
Wichtige Hinweise für Ihre Sicherheit sind besonders gekennzeichnet. Beachten
Sie diese Hinweise unbedingt, um Unfälle und Sachschäden zu vermeiden.
Sicherheitshinweise sind wie folgt aufgebaut:
SIGNALWORT
Art der Gefahr
Folgen bei Nichtbeachtung
Gefahrenabwehr
Warnzeichen: macht auf die Gefahr aufmerksam
Signalwort: gibt die Schwere der Gefahr an (siehe folgende Tabelle)
Art der Gefahr: benennt die Art oder Quelle der Gefahr
Folgen: beschreibt die Folgen bei Nichtbeachtung
Abwehr: gibt an, wie man die Gefahr vermeidet/umgeht

7
MGA II
Gefahrenklassen nach ANSI
VORSICHT
HINWEIS
Warnzeichen, Signalwort Bedeutung
kennzeichnet eine gefährliche Situation, in der
Tod oder schwere Körperverletzung eintreten
können, wenn sie nicht vermieden wird
kennzeichnet eine gefährliche Situation, in der
leichte bis mittelschwere Körperverletzungen
eintreten können, wenn sie nicht vermieden wird.
Sachschäden: Das Produkt oder die Umgebung
können beschädigt werden.
Auf dem Modul
Bedeutung: Angaben in der Bedienungsanleitung berücksichtigen

8
MGA II
Information about CE labelling
The devices in the MGA II range carry the CE label and satisfy the requirements of EU
guideline 2004/108/EG “Elektromagnetic compatibility” and of the Low Voltage Directive
2006/95/EC admits listed harmonised European standards (EN).
The EU declarations of conformity according to the above mentioned EU guideline , Article
10, for the relevant authorities are available from:
HOTTINGER BALDWIN MESSTECHNIK GMBH
Im Tiefen See 45
D−64239 Darmstadt
The MGA II system devices are designed for industrial and domestic applications (domestic
area, business and trade, small scale enterprises) and fulfil the requirements for interference
immunity and for emisssion according to EN61326−1: 2006.
In addition to the details given in the operating instructions, the following information should
be taken into account when operating the device:
The connecting cable must be screened and the screen must be connected flat on the
connector housing.
If system components (e.g. plug-in cards) are supplied separately, then the operator must
ensure that they are used in a HBM system housing or in an equivalent housing.

9
MGA II
Working safely
Error messages should only be acknowledged if the cause of the error is removed and no
further danger exists.
The instrument complies with the safety requirements of DIN EN 61010, Part 1 (VDE 0411,
Part 1); Protection Class I.
To ensure adequate immunity from interference, use only Greenline shielded ducting (see
HBM offprint ”Greenline shielding design, EMC-compliant measuring cable; downloadable
from the Internet at http://www.hbm.com/Greenline).
Conversions and modifications
The measuring amplifier system 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.
In particular, any repair or soldering work on motherboards is prohibited. When exchanging
any modules, only original HBM parts must be used.
Qualified personnel
means persons entrusted with the installation, assembly, commissioning and operation of
the product who possess the appropriate qualifications for their function.
This instrument is only to be installed and used by qualified personnel strictly in accordance
with the technical data and with the safety rules and regulations which follow.
It is also essential to comply with the appropriate legal and safety regulations for the applica-
tion concerned during use. The same applies to the use of accessories.
Maintenance and repair work on an open device with the power on must only be carried out
by trained personnel who are aware of the dangers involved.

10
MGA II
Safety requirements
Before commissioning, find out whether the mains voltage and current type specified on the
identification plate match the mains voltage and current type at the place of use, and whe-
ther the circuit being used is adequately protected.
Insert the mains plug only into a socket with a protection switch (Protection Class I). When
connecting electrical devices to low voltage: connect to extra−low safety voltage only (safety
transformer in accordance with DINVDE 0551/EN60742).
Before you open the device, make sure it is switched off; remove the mains plug from the
socket.
Never pull the mains plug from the socket by the mains cable.
Automation equipment and devices must be covered over in such a way that adequate pro-
tection or locking against unintentional actuation is provided (such as access checks, pass-
word protection, etc.). The MGAII must be positioned such that the mains connection can be
accessed and the device disconnected from the mains at any time.
Do not operate the device, if the mains cable is damaged.
If an amplifier channel is to be withdrawn, close off the plug−in unit with a blanking plate.
Built−in devices must only ever be operated whilst they are within the housing provided for
them.
The device complies with the safety requirements of DIN EN 61010-Part 1
(VDE 0411-Part 1); Protection Class I.