Analog Input Section
Common mode (referred to system ground)
Ranges
Less than
±
2 V
Larger than or equal to
±
2 V
Rejection (CMR)
> 80 dB @ 80 Hz (100 dB typical)
> 60 dB @ 80 Hz (80 dB typical)
Maximum common mode voltage
33 V RMS
33 V RMS
-120
-100
-80
-60
-40
-20
0
0.01
0.1
1
10
100
1000
Frequency [kHz]
Common mode response
< ± 2 V ranges
≥ ± 2 V ranges
M
ag
n
it
u
d
e
[d
B
]
Figure A.192:
Representative common mode response
Input overload protection
Overvoltage impedance change
The activation of the overvoltage protection system results in a reduced input impedance.
The overvoltage protection is not active for as long as the input voltage remains less than
200% of the selected input range or 70 V, whichever value is the smallest.
Maximum nondestructive voltage
±
70 V DC
Overload recovery time
Restored to 0.1% accuracy in less than 5 μs after 200% overload
IEPE Sensor
Input ranges
±
10 mV,
±
20 mV,
±
50 mV,
±
0.1 V,
±
0.2 V,
±
0.5 V,
±
1 V,
±
2 V,
±
5 V,
±
10 V,
±
20 V
Overvoltage protection
-
1 V to 22 V
IEPE gain error
0.1%
±
250 μV
IEPE gain error drift
±
25 ppm/°C (
±
14 ppm/°F)
IEPE compliance voltage
≥ 23 V
Excitation current
2, 4, 6, 8 mA, software selectable
Excitation current accuracy
±
5%
Coupling time constant
1.5 s
Lower bandwidth
-
3 dB @ 0.11 Hz
Maximum cable length
100 m (RG
-
58)
TEDS support
Yes; class 1
GEN3t
I3995-3.1 en HBM: public
659