CompactModul Metall CR2033
4
If the unit is not supplied by the mobile on-board system (12/24 V battery opera-
tion) it must be ensured that the external voltage is generated and supplied ac-
cording to the criteria for safety extra-low voltage (SELV) as this is supplied without
further measures to the connected controller, the sensors, and the actuators�
The wiring of all signals in connection with the SELV circuit of the unit must also
comply with the SELV criteria (safe extra-low voltage, safe electrical separation
from other electric circuits)�
If the supplied SELV voltage has an external connection to ground (SELV be-
comes PELV) the responsibility lies with the user and the respective national
regulations for installation must be complied with� All statements in these operating
instructions refer to the unit the SELV voltage of which is not grounded�
The terminals may only be supplied with the signals indicated in the technical data
or on the unit label and only the approved accessories of ifm electronic gmbh may
be connected�
The unit can be operated within a wide temperature range according to the tech-
nical specification indicated below� Due to the additional self-heating the housing
walls can have high perceptible temperatures when touched in hot environments�
In case of malfunctions or uncertainties please contact the manufacturer�
Tampering with the unit can lead to considerable risks for the safety of persons
and plant� It is not permitted and leads to the exclusion of any liability and warranty
claims�
This is a class A installation� It can cause radio interference in domestic
areas� In this case the operator is requested to take appropriate measures�
3 Function and features
The CR2033 I/O module enables decentralised evaluation of sensor signals and
decentralised triggering of actuators and proportional valves�
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The module supports binary/analogue inputs/outputs and is therefore classified
in the device profile "I/O module" to CiA DS 401�
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As regards the input/output functions, the module can be configured and it
supports the following functions:
– analogue inputs
(0���10/32 V, 0���20 mA, ratiometric, binary and binary with diagnosis)
– binary inputs
– binary outputs
– PWM outputs up to 4 A
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There are 1 server SDO and the 4 default PDOs to CiA DS 401�
The PDO mapping cannot be changed (static PDO mapping)� The default iden-
tifiers are assigned according to the "predefined connection set"�
