SMY133-SMY134-SMP133 Operating Manual
Fig. 6.7 : I/O Setup – PC Action Properties
If the name is not defined, the quantity is referenced with its general name
PCxx
(when the
xx
is index
corresponding digital input).
6.2.1.7 Analog Input (AI)
For each of the analog inputs there must be specified :
•
analog input
number
•
represented quantity
name
•
represented quantity
unit
•
input type and
conversion ratio
… choose either “10V” or „20mA“ input type and the values of
represented quantity for 10V / 20mA and 0V / 4(0)mA, respectively
Fig. 6.8 : I/O Setup – Analog Input Properties
If an analog input is capable to measure residual current too, appropriate I
Δ
residual current
is measured on the input as default, using the CT
RCM
ratio specified in the Installation group
of parameters.
But as soon as the analog input action is defined in the I/O block setup, the residual current
monitoring on this input is suppressed and appropriate I
Δ
value is no longer available,
because the input is used for a 20 mA current loop signal now.
6.2.1.8 Analog Output (AO)
Analog outputs require following parameters to be set :
•
analog output
number
•
control quantity
&
phase
… select desired quantity to be transmitted to the output. Both
single-phase and three-phase quantities or logical AND/OR of them can be chosen.
•
conversion ratio
… values of control quantity corresponding to 20mA and 4(0)mA
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