Structure And Principle Of Operation - HBM PACEline CMA-Serie Bedienungsanleitung

CMA
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Structure and principle of operation

The CMA charge amplifier is connected to a transducer for signal
conditioning. The CMA amplifies the electric charges to a proportional output
signal of −10 to +10 V
The functions of the charge amplifier can be changed via the MEASURE /
RESET and RANGE 1 / RANGE 2 inputs.
The charge amplifier is fitted with TEDS (Transducer Electronic Data Sheet).
In keeping with the choice of measuring range (RANGE 1/ RANGE 2), the
valid TEDS information for the particular measuring range is forwarded to the
downstream evaluating electronics, if this is TEDS compliant. The High Level
Voltage template is used. For more detailed information, see Section 6.1.
e.g. CFT piezoelectric
force transducer
Fig. 6.1 Block diagram of the CMA measuring chain
MEASURE / RESET
With an input voltage of 0 V at PIN MEASURE/RESET, the charge amplifier is
in the MEASURE measurement mode. If a voltage of 24 V is present at PIN
MEASURE / RESET, the charge amplifier switches to RESET.
Setting RESET will set the amplifier output signal to zero. This can be done
with any applied force. The advantage of the Reset function is that you can
compensate initial loads and drift factors. A measurement can also be started
at a high force level.
A2559−1.0 en/de/fr
(see the test certificate for accurate data).
DC
CMA charge amplifier
Supply voltage
18 − 30 V
DC
0 V
DC
RANGE 1 / RANGE 2
MEASURE / RESET
Output voltage
−10 to +10 V
DC
0 V
DC
TEDS
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HBM