Characteristics
Original instructions
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Altitude Operating Conditions
The characteristics in the tables below apply to the BMX AMI 0800 module for use at altitude up to 2000 m (6560 ft). When the module operates above 2000 m (6560 ft), apply additional derating.
For detailed information, refer to chapter Operating and Storage Conditions.
General Characteristics
This table shows the general characteristics for the BMX AMI 0800 module:
Operating temperature
0...60 ºC (32...140 ºF)
Type of inputs
High level Fast inputs with common point
Nature of inputs
Voltage / Current
Number of channels
8
Acquisition cycle time:
  • Fast (periodic acquisition for the declared channels used)
1 ms + 1 ms x number of channels used
  • Default (periodic acquisition for all channels)
9 ms
Display resolution
16-bit
Digital filtering
First order
Isolation:
  • Between channels
Non-isolated
  • Between channels and bus
1400 VDC
  • Between channels and ground
1400 VDC
Maximum overload authorized for inputs:
Voltage inputs: +/- 30 VDC
Current inputs: +/- 30 mA
Power consumption (3.3 V)
Typical
0.32 W
Maximum
0.48 W
Power consumption (24 V)
Typical
0.90 W
Maximum
1.10 W
Measurement Range
The BMX AMI 0800 analog inputs have the following measurement range characteristics:
Measurement range
+/- 10 V; +/- 5 V
0...10 V; 0...5 V; 1...5 V
+/- 20 mA
0...20 mA; 4...20 mA
Maximum conversion value
+/-11.4 V
+/-30 mA
Conversion resolution
0.36 mV
1.4 μA
Input impedance
10 ΜΩ
250 Ω
Internal conversion resistor
Precision of the internal conversion resistor
-
0.1% - 15 ppm/°C
Measurement errors:
  • At 25°C
  • Maximum in the temperature range 0...60°C (32...140°F)
0.075% of FS(1)
0.1% of FS(1)
Typical 0.15% of FS(1)(2)
0.3% of FS(1)(2)
Temperature drift
30 ppm/°C
50 ppm/°C
including conversion resistance
Monotonicity
Yes
Yes
Common mode rejection (50/60 Hz)
100 dB
100 dB
Crosstalk between channels DC and AC 50/60Hz
> 80 dB
> 80 dB
Non-linearity
0.001%
0.001%
Repeatability @25 °C of 10 min. stabilization time
0.005% of FS(1)
0.007% of FS(1)
Long term stability after 1000 hours
< 0.004% of FS(1)
< 0.004% of FS(1) 
(1)
FS: Full Scale 
(2)
With conversion resistor error
NOTE: If nothing is connected on a BMX AMI 0800 analog module and if channels are configured (range of 4...20 mA or 1...5 V), there is a detected I/O error as if a wire is broken.