13
AED System Digital Transducer Electronics
A1780
−
4.3 en/de/fr/es/it
HBM
6.3 AED9301B basic device
The AED9301B basic device extends the functionality of the AD amplifier
board and provides:
•
mechanical protection (IP65)
•
a slot for the AD103C amplifier board
•
a voltage supply for the amplifier board and transducer excitation (5 V
DC
)
(electrically isolated)
•
total transducer bridge resistance
80
Ω
... 4000
Ω
•
a PROFIBUS interface (electrically isolated from the amplifier and from the
digital inputs / outputs)
•
two digital inputs and four digital outputs (electrically isolated from the ampli-
fier and from PROFIBUS)
•
EMC protection
Connector for
amplifier
Voltage supply
and digital I/O
PROFIBUS
light-emitting
diodes
Transducer
connection
Address
settings
PROFIBUS
connection
Diagnostics bus
Bus termination and diagnostics switch
Fig. 6: Mechanical construction of the AED9301B
(for pin assignment and setup, see sticker in lid)