ETAS ES930.1 - Page 101

ETAS Technical Data
ES930.1 - User Guide 101
13.9.8.2 Current Input (CI)
NOTE
It must be observed that the interconnection with a Full-bridge (H-bridge) is
only possible for the permanently assigned Half-bridge channel groups (see
chapter
10.6.1 on page 64).
NOTE
Observe the notes about Switch-on behavior of Half-bridges in chapter 10.5.2
on page 64.
Number of channels 6
Function Current measurement with shunt in
output path of half-bridge switch
Measuring range -5 A to 5 A (clipping)
Measuring accuracy ±(50 mA + |I
meas
| * 0.5%)
Measuring accuracy (drift/tempera-
ture)
±(0.5 mA + |I
meas
| * 300 ppm)/K
Measuring accuracy over output volt-
age
±(2 mA/V * |U
out
- 12 V|)
Sampling rate, configurable per mod-
ule
0.5 samples/s bis 10 ksamples/s,
additionally events
Anti-aliasing filter (hardware filter) Low-pass 1st order,
3-dB limit frequency 15 kHz
Digital filter (software), configurable
per module
Configuration 1:
Off
Configuration 2:
CIC filter (sinc filter), automatic filter
setting with selection of sampling rate
Averaging time 
s
= 100 s to 2 s,
Averaging time equal to sampling rate
Configuration 3:
IIR filter 2nd order (Bessel) with
adjustable limit frequency (0.4
Hz to
4
kHz)
NOTE
The software configurable filter of a measuring channel (analog inputs [AI]
and current measurement channels [PS] of the Power Stages) is automati
-
cally deactivated when the measurement channel is operated in the event
mode.