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Appendix
©
2002 Wieland Electric GmbH Version 2.4* (December 2002)
112
Part no. 05.591.3389.0 © 2002 Wieland Electric GmbH
Current inputs
The 4 analog inputs are “single ended” inputs. The negative signal pole of all
inputs is therefore AGND.
The analog potentials (AIx and AGND) are electrically isolated from the power
supply (+24 V, 0 V) and the PE.
The following should therefore be noted when connecting current sources to the
analog inputs:
a) Potential-free signal sources:
The required potential interface is already guaranteed since the input signal
potential is based on AGND.
b) Non-isolated signal sources:
In the case of varying, non-isolated signal sources, it should be noted that no short
circuit of the signal sources occurs due to the connection to AGND.