Delphin ProfiMessage, Руководство по оборудованию

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Profi Message
See also Shielding .
9.1.5.2 Analogue inputs
Properties
8 Analogue inputs. Resolution 14 bit Differential inputs. Impedance 0.8
Μ
W.
A potential difference totalling up to 100 V is permitted between the differential
inputs ('-' connector). Input protection to ±250 V.
Sampling frequency
Real synchronous/parallel sampling.
l
Batch sampling: A max. sampling frequency of 20480Hz for 8 channels. This
gives a total sampling rate of approx. 160000 measurement values/s.
l
Continuous sampling: A max. sampling frequency of 1024/2048/4096 Hz
for 8/4/2 channels. This gives a total sampling rate of approx. 8000 meas-
urement values/s.
Signal bandwidth / Anti-aliasing filter (HW)
Signal bandwidth is DC to 8kHz ±0.8kHz.
Transfer rate for measurement data
Max. 10000 measurement values/s.
Measurement ranges
Seven voltage measurement ranges are available:
Measurement range V ±10 ±5 ±2.5 ±1.25 ±0.625 ±0.312 ±0.156
Resolution mV 1.2 0.6 0.3 0.15 0.08 0.04 0.02
0/4 … 20 mA signals can be converted to voltage signals using terminating res-
istors of, for example, 50/100/250
Ω
. Resistors are to be externally attached
between the '+' and '-' connectors.
Precision
DC precision is factory set using calibration and adjustment. Basic precision is
±0.1 to ±0.4 % of the (unipolar) measurement range.
Measurement range V ±10 ±5 ±2.5 ±1.25 ±0.625 ±0.312 ±0.156
DC precision
mV ±10 ±5 ±2.5 ±1.3 ±1.3 ±0.9 ±0.6
% 0.1 0.1 0.1 0.1 0.2 0.3 0.4
For 0/4 to 20 mA signals, terminating resistors need to be used that have an accur-
acy greater than 0.1 %.
236
Delphin Technology AG
Dezember 2015
Profi Message Manual