Omron E5CN-HT User Manual page 155

Using the Transfer Output
Transfer Scaling
When used as a control output, 3.7 mA will be output for 0% and 20.3 mA
will be output for 100% so that the actuator is controlled at 0% or 100%.
Output current (mA)
20.3
20
4
3.7
0
(The above graph is for when the linear current output is set to 4 to 20 mA.)
(3) When the present SP is selected, the remote SP will be output while the
Remote SP Mode is set in the SP Mode parameter. If the Fixed SP Mode
is set, the fixed SP will be output. If the Program SP Mode is set, the pro-
gram SP will be output.
(4) This setting will be ignored for position-proportional models.
(5) This setting will be ignored for standard control or for position-proportion-
al models.
(6) Displayed for position-proportional models only when there is a potenti-
ometer input.
• Reverse scaling is possible by setting the Transfer Output Lower Limit
parameter (tr-l) larger than the Transfer Output Upper Limit parameter
(tr-h). If the Transfer Output Lower Limit and Transfer Output Upper
Limit parameters are set to the same value when 4 to 20 mA is set, the
transfer output will be output continuously at 0% (4 mA).
• If the present SP, or PV is selected, the Transfer Output Lower Limit and
Transfer Output Upper Limit parameters will be forcibly initialized to the
respective upper and lower setting limits for changes in the upper and
lower limits of the SP limiter and the temperature unit.
If the MV for heating or MV for cooling is selected, the Transfer Output
Lower Limit and Transfer Output Upper Limit parameters will be initialized
to 100.0 and 0.0, respectively, when a switch is made between standard
control and heating/cooling control using the Standard or Heating/Cooling
parameter.
• The output current when the linear current type is set to 4 to 20 mA, the
transfer output upper limit is set to 90.0, and the transfer output lower limit
is set to 10.0 is shown in the following graph.
• For scaling from 0.0% to 100.0%, the output for 5.0 to 0.0 will be the
same value as for 0.0%, and the output for 100.0 to 105.0 will be the
same value as for 100.0%
Transfer output value
Control output
MV (%)
100
Section 4-13
133