Mechanical Construction Of The Basic Devices; Aed9101D Basic Device - HBM AED Serie Guía Rápida

AED System Digital Transducer Electronics
6

Mechanical construction of the basic devices

Amplifier boards are designed as a plug-in board and plug into the carrier
board in the basic device via a 25–pin sub-D connector. The basic device con-
tains the terminals for the transducer, power pack and interface connections,
the slide switch for interface selection and the voltage stabilizer. The connec-
tion cables exit the casing via PG glands on the side.
A connection diagram is attached inside the lid of the each basic device. When
making the connections, ensure that the wires of the cable do not protrude be-
yond the connection terminals (risk that loops may form). Make sure that the
cable shielding is properly connected to the PG gland (see Figure 1).

6.1 AED9101D basic device

The AED9101D 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
• total transducer bridge resistance 40 Ω ... 4000 Ω
• a choice of RS-422, RS-485 and RS-232 serial interfaces
• a digital input
• EMC protection
Load cell
connections
Fig. 4: Mechanical construction of the AED9101D (for pin assignment and setup, see sticker in lid)
A1780−4.3 en/de/fr/es/it
Interface
settings
Connection for
amplifier
Interface, voltage supply,
RS-485 bus
trigger input, Diagnostic
termination
11
)
DC
HBM