Signal Processing; For Your Safety - Bosch Rexroth ctrlX I/O XI332204 Manual

Analog input terminal 4-channel, 0 to 20 ma, 16 bit, bipolar
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3.4 Ambient conditions
Ambient temperature
Up to 4000 m
From 4000 m
Maximum operating altitude
Acc. to 60204
Ambient temperature
(Storage and transport)
Permitted air humidity
according to DIN EN 61131-2
Operation
Storage
Transport
Degree of protection
Acc. to DIN EN 60 529
Protection class
Acc. to DIN EN 61010-2-201
Overvoltage category
Acc. to IEC 60664-1
Contamination level
Acc. to IEC 61010-1
NOTICE
Failure of the product due to contaminated air!
The ambient air must not contain acids, alkaline solu-
tions, corrosive agents, salts, metal vapors and other
electrically conductive contaminants in high concentra-
tions.
The devices to be installed into the housing and installa-
tion compartments must at least comply with the degree
of protection IP 54 according to DIN EN 60529.
The device shall be provided in a suitable fire enclosure
in the end-use application.
NOTICE
Defective product due to gases jeopardizing functions
Due to the risk of corrosion, avoid sulphurous gases (e.g.
sulphur dioxide (SO
) and hydrogen sulphide (H
2
product is not resistant against these gases.
NOTICE
Failure of the product due to overheating
To avoid overheating and a trouble-free operation of the
product, the ambient air has to circulate. Also refer to the
section "Installation notes".
3.5 Mechanical tests
Vibration resistance
Acc. to DIN EN 60068-2-6
Shock test
Acc. to DIN EN 60068-2-27
Broadband noise
Acc. to DIN EN 60068-2-64
For the current approvals, go to
⮫ www.boschrexroth.com/electrics.
4

For your safety

4.1 Intended use
Only use the module as specified in the data sheet.
XI342204
-25 to 45 °C
-25 to 40 °C
5000 m
-40 to 70 °C
5-85 %
10-100 %
45-95 %
IP20
(not evaluated by UL)
III
2
2, no condensation
S)). The
2
Oscillations, sinusoidal in all
three axes, 5 Hz - 8.4 Hz with
3.5 mm amplitude
8.4 Hz -150 Hz with 1 g peak
acceleration
Shock stress: Shock resist-
ance in all three axes
11 ms semi-sinusoidal 15 g
20-500 Hz with 1.22 g RMS,
30 min in all three axes
4.2 User qualification
The product use described in this data sheet is only intended
for qualified electricians and staff trained by these qualified
electricians. The user has to be familiar with the known safety
concepts on automation technology, applicable standards and
other guidelines.
4.3 Electric safety
NOTICE
Loss of electric safety
Unintended handling can affect the device safety! Observe
the notes in the present data sheet during installation, com-
missioning and operation.
5

Signal processing

5.1 General information on signal processing
The signal processing of the module consists of several steps
shown in this section, i.e. how low-pass filter and oversam-
pling are implemented in hardware components while other
steps are implemented as firmware functions.
Digitalization
HW filter
with
ADC input,
Low-Pass
oversampling
transfer to µC
in ADC
Fig. 3: Overview on signal processing
5.2 Distinctive values and data formats
Input signal
Process data
value
Current in μA
21.6 mA
21600
21.4 mA
21400
20 mA
20000
0 mA
0
- 0.05 mA
0
- 0.15 mA
0
Process data is transferred as value normalized to µA in
"signed int 16" format. The process date corresponds directly
to the values read in at the input. It depends on the gain and
offset calculation. Thus, the conversion to an abstract value
range is omitted. The value can be directly used as current
value in the application.
Note that the input value range of the module from 0 mA
up to reaching the upper limit value is specified at 108% of
the end value of the measured range (MBE). Normally, higher
values are read in and transmitted, but the upper limit of the
technically reachable value range depends on the tolerances
and can change in future hardware releases.
Values smaller than 0 µA are not transmitted.
A bit at the ADC corresponds to the value 0.673 µA.
5.3 Synchronizing the application
The application is synchronized in the "SM synchronous"
mode.
Value range
User gain,
limit
offset
Limit 1/2
threshold
check
Over-,
underrange
threshold
check
Percent,
Notes
measuring
range
108%
Message, upper range
limit
107%
Reset message, upper
range limit
100%
0%
Value limitation down
to 0 mA
Reset message, lower
range limit
Message, lower range
limit
R911418827, Edition 01, 2 / 8
Process data
output to
EtherCAT
Status
information
output to
EtherCAT
ADC Raw
value
(CoE object)

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