Acc / Acc; Acc: Specifications; Acc Bnc; Acc+ (Counter) L1B7F - DEWESOFT SIRIUS Technical Reference Manual

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5.7 ACC / ACC+

The ACC modules are perfect for sound and vibration IEPE channels.

5.7.1 ACC: Specifications

Inputs
Ranges (Dual Core Low Range)
Input Accuracy (Dual Core)
Dynamic Range@10kS (Dual Core)
Typ. SNR@50kS (Dual Core)
Typ. CMR @ 50Hz (1kHz)
Inter Channel Phase-mismatch 0.02° * f
IEPE mode
Counters (ACC+ type only)
Input Level Compatibility CMOS, LVTTL
Additional Specifications

5.7.2 ACC BNC

Illustration 93: SIRIUS-ACC: pin-out

5.7.3 ACC+ (Counter) L1B7f

As an additional function to the ACC module, the ACC+ module also has a 7-pin Lemo connector for digital counters.
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Doc-Version: 1.4.2
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Voltage, IEPE, current (ext. Shunt),
ACC+ only: counter, discrete
24bit delta-sigma dual core with anti-aliasing filter (5.2.1 SIRIUS® Dual Core series: High Dynamic
ADC Type
(up to 160 dB) page 49)
Sampling Rate Simultaneous 200kS/sec
Gain Drift Typical 10 ppm/K, max. 30 ppm/K
Offset Drift Typical 2 μV/K + 10 ppm of range/K, max 2 μV/K + 20 ppm of range/K
Gain Linearity <0.02%
in
Channel Cross talk 200 dB @ 50Hz; 165 dB @ 1kHz
Input Coupling DC, AC 1Hz (3 Hz, 10 Hz per SW)
Input Impedance 1 MΩ in parallel with 0.4nF
Overvoltage Protection In+ to In-: 50 V continuous; 200V peak (10msec)
Excitation 4 or 8mA
Compliance voltage 25 Volt
Output Impedance >100 kΩ
Sensor detection Shortcut: <4Volt; Open: > 19Volt
1 counter/3 digital input, fully synchronised with analogue data
Counter Modes counting, waveform timing, encoder, tacho, gear-tooth sensor
Input Protection ±25Volt continuous
Alarm output Open collector, max. 100mA/30Volt
Sensor supply 5V/100mA;12V/50mA
Input connector BNC
TEDS support IEPE mode only
Table 9: SIRIUS-ACC8 specifications
(BNC)
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±10V (±500mV)
±0.1% of reading ±10(1)mV
140 dB (160 dB)
107 dB (125 dB)
140 dB (120 dB)
[kHz] + 0.1° (@ 200 kS/sec)
Illustration 94: SIRIUS
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SIRIUS® Measurement Modules
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±500mV (NA)
±0.1 of reading ±1(NA)mV
135 dB (NA)
100 dB (NA)
140 dB (120 dB)
i
8xACC
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