4.7 How to Use Transfer Output
E5AK
4--17
4.7 How to Use Transfer Output
·
When using transfer output, add on the communications unit (E53-AKF).
·
You can select the following data items in the “transfer output type”
parameter (option mode) as the transfer outputs:
Set point
Set poing during SP ramp
Process value
Manipulated variable (heat)
Manipulated variable (cool), and
Valve opening.
However, note that heating/cooling side manipulated variables can be
output only standard type controllers, and valve opening can be output
on position-proportional type controllers
·
If the output assignment is changed when either ”manipulated variable
(heat)” or ”manipulated variable (cool)” parameter is selected, the
default ”set point” is returned to.
·
These transfer outputs can be scaled according to the settings of the
“transfer output upper limit” and “transfer output lower limit” param-
eters before output. Setting of an upper limit value smaller than the
lower limit value is allowed, so reverse scaling can also be carried out.
Also, the scale can be enlarged by the upper-and lower-limit width speci-
fied for each data item. The following example shows scaling of the read-
ing side manipulated variable.
(mA)
20
4
20
4
0
100
(mA)
Transfer output
Transfer output
Reverse scaling
Enlarged scale
Transfer output
upper limit: 0
Transfer
output lower
limit: 100
Manipu-
lated
variable
(%)
Transfer
output lower
limit: 10
Transfer
output upper
limit: 80
Manipulated
variable (%)
F
Transfer output
type
F
Transfer output
scaling