Omron E5ZN - 4-12 Using Transfer Output; 4-12-1 Transfer Output Types; 4-12-2 Transfer Output Scaling

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Using Transfer Output Section 4-12
4-12 Using Transfer Output
• Transfer output is supported by analog output models only.
• The E5ZN has two systems of transfer output: Linear current output is for
4 to 20 mA DC or 0 to 20 mA DC, and linear voltage output is for 1 to
5 VDC/0 to 5 VDC.
4-12-1 Transfer Output Types
Ten types of data can be allocated for transfer output using the control out-
put 1 allocation, control output 2 allocation, auxiliary output 3 allocation,
and auxiliary output 4 allocation (initial setting level):
SP transfer output for ch1
Ramp SP transfer output for ch1
PV transfer output for ch1
Heating MV transfer output for ch1
Cooling MV transfer output for ch1
SP transfer output for ch2
Ramp SP transfer output for ch2
PV transfer output for ch2
Heating MV transfer output for ch2
Cooling MV transfer output for ch2
• Control output 1 and control output 2 use linear current output, and auxil-
iary output 3 and auxiliary output 4 use linear voltage output.
4-12-2 Transfer Output Scaling
• The range set by the transfer output upper limit and transfer output lower
limit (initial setting level) can be scaled to the output range for the transfer
output (4 to 20 mA DC or 0 to 20 mA DC for control output 1 and 2, and to
1 to 5 VDC or 0 to 5 VDC for auxiliary output 3 and 4).
• Values can be expanded by setting a small range between the transfer
output upper and lower limits. Reverse scaling can be performed by set-
ting the transfer output upper limit to a value smaller than the transfer out-
put lower limit. The following figure shows a scaling example where the
heating MV transfer output is scaled to 4 to 20 mA DC, and another
example where it is scaled to 1 to 5 VDC.
0
Manipulated
variable (%)
Transfer output
(mA)
20
4
100
Enlarged scale
Transfer output
lower limit: 10
Transfer output
upper limit: 80
Transfer output
(mA)
20
4
Reverse scaling
Transfer output
upper limit: 0
Transfer output
lower limit: 100
Manipulated
Variable (%)
Transfer output
(V)
5
1
Reverse scaling
Transfer output
upper limit: 0
Transfer output
lower limit: 100
Manipulated
Variable (%)
0
Manipulated
variable (%)
Transfer output
(V)
5
1
100
Enlarged scale
Transfer output
lower limit: 10
Transfer output
upper limit: 80
Example of scaling
for 4 to 20 mA DC
Example of scaling
for 1 to 5 VDC